Ram Audio s 500, s 2000, s 3000, s 4000, s 6000 schematic

SERVICE MANUAL

P-5343-006

QXPSDoc

1/07

© 2007 by C.E. Studio-2 s.l. - Spain (EEC)

http://www.ramaudio.com

e-mail: [e-mail]

Professional Power Amplifiers

S Series

1500-2000-3000-4000-6000
3004-4004-4044-6004-6044

WARNING:

The exclamation point inside an equilateral triangle indicates
the existence of internal components whose substitution may
affect safety.

The lightning and arrowhead symbol warns about the presen­ce of uninsulated dangerous voltage.

To avoid fire or electrocution risk do not expose the unit to rain or moisture.

To avoid electric shock, do not open the unit. No user serviciable parts inside.
In the case of disfunction, have the unit checked by qualified agents.

SAFETY PRECAUTIONS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

©2010 by C.E. Studio-2 s.l.
Pol.Ind. La Figuera
C/ Rosa de Luxemburgo, 34
46970 Alaquas - Valencia - SPAIN

Phone: [phone]

Fax: [phone]

http://www.ramaudio.com
e-mail: [e-mail]

RAM Audio

®

, PMS™, SSP™, ICL™and QuantaPulse™is registered trademarks of C.E. Studio-2 s.l.. All

other names are trademarks of their respective companies.

The S series is a hi power amplifier composed by 2 or 4 channel class H technology fed by a switching power
supply. It has twin male-female XLR back pannel input connectors per channel with the posibility to work in ste­reo, parallel or bridge modes. Has too a gain selection switch which permits work at 26, 32 or 38 dB, and a
selectable subsonic filter. It has four front pannel indicators per channel to inform the amplifier operative status
and a potentiometer attenuator per channel to adjust the output level.

At the back pannel there are the output Speakon audio connectors. It has too a three wire power mains cord
to connect the amplifier to a properly voltage and current rated mains network with earth connection.

Audio circuit description

The circuit input has a balanced (differential) amplifier to reject the common mode noise added to the audio
signal. Then the signal passes through the gain amplifier, subsonic filter and the clip limiter gain control that is
innactive unless the amplifier will be in clipping situation due to excesive input signal.

Following this, the signal arrives to the properly named power amplifier. This circuit is comprised by an opamp
that provides the error signal to a class A voltage amplifier that feeds the common emitter power amplifier. The
feedback signal from the output is returned to the opamp that performs the corrections necessary to replicate at
the output the amplified input signal.

Inside the class A voltage amplifier is inserted a bias control circuit that provides a operating point to the follo­wing power stage and compensates the thermal derating of silicon PN junctions avoiding the thermal runaway
problem.

Inside the power stage is implemented a current limiting circuit that avoid to excessive power transistors disi­pation in case of shortcircuit or very low impedance loads. The actuation of this circuit limits the output to secure
levels.

Following the power amplifier circuit there are a zoobel network and a coil in series that provides correct
amplifier performing and inconditional stability in case of excesive inductive or capacitive loads.

The power supply simetrical rails come from the class H conmutation matrix. This matrix is composed by
mosfet transistors and diodes and selects the most suitable voltage level to feed the amplifier depending of the
output signal level. This operating method leads to a very low power disipation in the power transistors. The mos­fets in the conmutation matrix are commanded by a voltage comparator which output depends of the output sig­nal and the supply rails voltage.

There is an on board fan control to regulate the fan speed depending of temperature that is sensed via a ntc
thermistor attached to the heatsink.

Regarding to the protection systems there are several blocks which comprise:

- DC protection, via a low pass filter that detects DC or very low frequency signal at the output.

- Shortcircuit protection.

- High temperature protection, via the ntc thermistor and a comparator with a fixed absolute reference.

- Power on delay, via a timer that sets the time between power on and full operative status.

- Clip limiter

Regarding the front pannel indicators, all of them are commanded from the audio power section, providing
visual information for fault, ok status, high temperature, clipping and input signal existence.

GENERAL DESCRIPTION

GENERAL DESCRIPTION

Power supply description

The amplifier has a switching power supply fully independent and self commanded and protected, to feed the
DC voltage to the audio power section.

The mains voltage passes through an interference filter to filter out both the switching noise to go out and the
mains interference to come in. Then is located the main fuse and power on switch that when closed permits the
charging of primary capacitors via the soft start circuit and the diode bridge. After a few seconds the soft start cir­cuit is bypassed and full mains voltage is applied to the primary side. From the capacitors DC voltage an inverter
implemented by two power transistors creates a high frequency square wave that feeds the high frequency trans­former primary winding. From the multiple secondary windings several dc voltages are built via the correspon­ding rectifiers, inductances and capacitors too feed the audio power section.

The control of the entire power supply is done from a separate board with contains all the necessary circuitry.
This circuitry is fed via its own power supply, fully independent, located in the same board. Inside the board are
located the power transistor drivers and clock generator for the high frequency signal. Beside, are located too the
soft start control and the power supply protections, that are:

- Power off or mains voltage absence detector

- Low/high mains voltage detector

- Excessive peak or average primary current detector via a current sensor.

- DC output shutdown

All these protections act stopping the high frequency oscillation and restarting the system configuring a very
fast acting way to protect the power supply. The current detector circuit try first to lower the amplifier gain to
reduce the current consumption, stopping the oscillation as a seconday action. Also, the audio section can send
information to the power supply to stop the oscillation, if you have DC output.

TECHNICAL SPECIFICATIONS

Technical Specifications

S-1500 S-2000 S-3000 S-4000 S-6000 S-3004 S-4004 S-4044 S-6004 S-6044

Output Power

1kHz, 1.0% THD+N

@ 2Ω 2x 880 W 2x 1190 W 2x 1570 W 2x 1950 W 2x 2950 W 4x 700 W 4x 980 W - 4x 1440 W -

@ 4Ω 2x 575 W 2x 790 W 2x 1100 W 2x 1380 W 2x 2025 W 4x 500 W 4x 670 W 4x 975 W 4x 1000 W 4x 1480 W

@ 8Ω 2x 325 W 2x 460 W 2x630 W 2x 810 W 2x 1250 W 4x 300 W 4x 430 W 4x 690 W 4x 620 W 4x 1015 W

Bridge @ 4Ω 1760 W 2380 W 3140 W 3900 W 5900 W 2x 1400 W 2x 1960 W - 2x 2880 W -

Bridge @ 8Ω 1150 W 1580 W 2200 W 2760 W 4050 W 2x 1000 W 2x 1340 W 2x 1950 W 2x 2000 W 2x 2960 W

Pink Noise 12dB C.F.

@ 2Ω 2x 975 W 2x 1360 W 2x 2060 W 2x 2460 W 2x 4225 W 4x 890 W 4x 1170 W - 4x 2080 W -

@ 4Ω 2x 610 W 2x 880 W 2x 1240 W 2x 1600 W 2x 2600 W 4x 580 W 4x 820 W 4x 1230 W 4x 1280 W 4x 2110 W

Frequency Response

Power Bandwidth ±0.25dB 20Hz-20kHz

Phase Response

@ 1 watt 20Hz-20kHz ±15 deg

Total Harmonic Distortion

20Hz-20kHz <0.05%

Intermodulation Distortion

SMPTE <0.05%

Damping Factor

20-500Hz @8Ω >500

Crosstalk

20Hz-20kHz >75 dB

Voltage Gain 26/32/38 dB

Sensitivity

Rated Power @ 8Ω (V) 2.6/1.3/0.6 3.0/1.5/0.8 3.6/1.8/0.9 4.0/2.0/1.0 5.0/2.5/1.3 2.6/1.3/0.6 3.0/1.5/0.8 3.7/1.9/0.9 3.5/1.8/0.9 5.0/2.5/1.3

Signal-to-Noise Ratio

20Hz-20kHz 112 dB 113 dB 115 dB 116 dB 118dB 112dB 113dB 116dB 116dB 118dB

Required AC Mains

230 V - 50 Hz (idle) 0.5 A 0.5 A 0.5 A 0.5 A 0.5 A 0.5 A 0.5 A 0.5 A 0.5 A 0.5 A

@ 4Ω (1/8 rated power) 4 A 4.8 A 6.2 A 7.5 A 10.5A 6 A 7.5 A 11A 10.5A 15A

Dimensions

W x H x D (mm) 483x89x310

W x H x D (inches) 19x3.5x12.2

Weight

Net (Kg- Lbs) 8-17.6 8-17.6 8.5-18.7 8.5-18.7 8.6-18.9 8.5-18.7 8.5-18.7 8.5-18.7 8.6-18.9 8.6-18.9

Protections

Soft-start, Turn-on Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, Overloaded

power supply, ICL

™

, PMS™, SSP

™

QUICK REPAIR PROCEDURE

MAINS CURRENT LIMITER:

To test the power amplifier it is advisable to implement a mains current limiter to avoid any shortcircuit, in
case the unit has damaged parts that have not been fixed. The most effective and easy solution is to use a pair
of 100W light bulbs arranged in parallel, and placed in series with the mains supply. If everything is OK, when
you switch on the power supply the bulbs will light until the primary capacitors are fully charged and then they
will bright softly enabling enough current to pass through to reach a normal start up of the supply.

POWER SUPPLY:

When the switching power supply breaks, the usual consequences are that both IGBT transistors (Q2 & Q3)
explode and that the IR2110S ic (U12) from the control board (the IGBT driver) gets damaged. It may be possi­ble that more ic's from the control board get damaged too (U15 SG3525 or U9 NE555), but this is not usual.
Once an IGBT breaks, it is absolutely necessary to change the IR2110S ic too, even if it seems to be OK. If the
IR2110S ic is not replaced, the IGBTs will damage again. If you have not the requiered SMT tools to change any
SMD component, the best option is to change the complete control board.

To change the IGBTs follow the next steps: take out the power supply unit from the amplifier by removing the
screws at the PCB. Put the power supply PCB upside down and unscrew the 4 screws that are on the IGBT
heatsink, remove both switching transistors by cutting their legs and clean the pad holes of solder. Screw another
pair of transistors to the heatsink with their corresponding mica insulators, and place the heatsink again into its
location by fastening the other two screws and soldering the transistors legs to the PCB. Above manipulations
must be done with utmost care in order to have a successful repair. Check that the transistor collector is insula­ted from the heatsink and that this heatsink is located parallel to the other one. Change the control PCB and do a
visual test of the rest of the components.

Test too the integrity of secondary rectifiers using a multimeter in "diode mode". Test also they are insulated
from the heatsink. (D9, D10, D11, D12, D13, D14, D15 and D16).

To test the power supply it is advisable to implement a little bench to avoid any risk because of lack of insula­tion from direct ac mains voltage in most of the circuit. We recommend to use a transformer with turns ratio 1:1
to isolate the mains from the power supply (remember that the 230 V ac is still present) but now you are isolated
from earth. Connect the power supply through the current limiter (bulbs in series with the mains) and you must
look at the control board green led to check that the 15Vdc control board supply is operating and that there is not
any shorted ic. You can measure then the voltages at the output connector, they will be lower than expected
because the voltage drops at the bulbs. The voltages are the following:

S 1500: ±49V / ±81V
S 2000: ±49V / ±98V
S 3000: ±65V / ±114V
S 4000: ±65V / ±130V
S 6000: ±54V / ±108V / ±162V
S 3004: ±49V / ±81V
S 4004: ±49V / ±98V
S 4044: ±65V / ±130V
S 6004: ±38V / ±76V / ±115V
S 6044: ±54V / ±108V / ±162V

When you are sure that the unit is OK, you can short the light bulbs with the aid of a switch and measure the
correct voltages.

Bear in mind that it is possible that one of the audio power section may be damaged. Test there is no short at
the power transistors. Verify also there is not any ground track opened. When switching the amplifier on, measu­re that the voltage at the power audio section emitter resistors correspond to the first class H level. Check with
an oscilloscope, with the probe attached to the emitter resistors, that when applying signal the power supply will
change in steps as expected. Test both polarities.

It is highly recommended to test the entire amplifier with the light bulbs in series with the mains supply to
avoid further power supply breakings. If the amplifier start up correctly then you may short the light bulbs and
apply signal to obtain power from the amp.

QUICK REPAIR PROCEDURE

POWER AUDIO SECTION:

When the audio section breaks, the usual consequences are that some final transistor or/and driver transistor
gets shortcircuited. It is possible to get also some class h conmutation mosfet transistor or diode shortcircuited.
To check it you have to use a multimeter in diode mode or resistance measure. If the final transistors are OK you
can measure around 10ohms between the base and the emitter and very high resistance between collector and
emitter. In the driver transistor you have to measure around 230ohms between base and emitter.

If you have a final transistor shortcircuited, you can measure a very low resistance between collector and
emitter of all final transistors, but the lower resistance indicates what is exactly the transistor shortcircuited,
because this has a direct shortcircuit and the other paralleled transistors have arround 0.66ohms (two serie
emittter resistor). Cut the leads of this shortcircuited transistors and continue testing if you have some more tran­sistor broken.

Also, you may have only the driver transistor shorcircuited, then you can measure this direct shorcircuit bet­ween collector and emitter of this transistor, and arround 10ohms betweem the collector and emiter of the all final
transistors. Also it is possible to have the driver and some final transistor broken. Cut the leads of any device
broken and continue testing until you are sure you have not any more device shorcircuited.

You have to check also the mosfet transistor and diode from the class H switch. They are placed on the same
heatsink nearest to the fan. Check you have not a shortcircuit between the drain and the source of the mosfet
and check the diode works correctly.

To change any device broken you have remove the heat sinks needed to reach it. Now remove his screw and
place the new one with thermal silicone. Clean the surface if needed. Tight the screew using a screewdriver with
a torque arroud 1.3N/m.

Its is possible you have to change some burn resistor. Check visually specially the 0.33ohms emitter resistor
and the 10ohms/1W driver emitter resistor, and if you have some dark resistor measure it and change if needed.

After change all broken devices, check you have not any shorcircuit between the outputs (heat sink), rails and
ground. It is highly recommended to test the entire amplifier with the light bulbs in series with the mains supply to
avoid further power module breakings. If the amplifier start up correctly then you may short the light bulbs and
apply signal to obtain power from the amp. Use 1kHz sinusoidal signal and 4 ohms dummy load to test all works
perfectly. Check specially the switch rail works correctly, and you have not any instability when you clip the out­put.

If the signal input clips before as expected, perhaps you can have some problem with the SOA limit circuit.
Some small SMD transistor can be broken. Check if you have problems with the positive or negative semicycle
and test the SOA limit components, placed in front of the heat sink. This circuit controls the maximun transistor
current and you can test it working with a very low impedance load (1ohm for example) and a small input signal.
you can see this system limits the output to a secure value.

Bias adjusting: you may adjust the Bias point only if requiered. To do it, connect the output to a 4ohms
dummy load. Place a 10kHz sinusoidal signal in the input, and setting the oscilloscope at 1V/div scale, adjust the
level to have 4Vp output. You have to adjust the PT1 trimer to remove the cross distortion. Take in account you
have to adjust to have the minimun current needed to remove the crossover distortion, because if you adjust it
with excesive bias current the power amplifier will work very hot or also can become hot without signal.

A

1 2 3 4 5 6 78

B

C

D

IND-

IND+

Channel D Channel D.Sch

VOUT_C

IOUT_C

INC-

INC+

TEMPA_C

SIGNAL_C

NTC SenseBRIDGEC

TEMP_C

CLIP_C

VOUT_D

IOUT_D

TEMPA_D

SIGNAL_D

TEMP_D

CLIP_D

FBKD OUTDM+M-

NTC SenseBRIDGEC

RMSLIM

Channel C Channel C.Sch

VOUT_B

IOUT_B

TEMPA_B

INB+

INB-

FBKC OUTCM+M-

SIGNAL_B

RMSLIM

NTC SenseBRIDGEA

TEMP_B

CLIP_B

Channel B Channel B.Sch

FBKB OUTBM+M-

RMSLIM

INA-

INA+

VOUT_A

IOUT_A

TEMPA_A

VRAIL_A

SIGNAL_A

NTC SenseBRIDGEA

TEMP_A

CLIP_A

Control_S Control_S.Sch

Channel A Channel A.Sch

M+

TEMPA_A

VOUT_B

IOUT_B

TEMPA_B

IOUT_A

TEMPA_D

VOUT_C

IOUT_C

TEMPA_C

IOUT_D

VOUT_D

INA+

INA-

INB+

INB-

FBKA OUTAM+M-

VRAIL_A

RMSLIM

IND-

IND+

INC-

INC+

SIGNAL_C

SIGNAL_D

TEMP_D

TEMP_C

CLIP_D

CLIP_C

VOUT_A

SIGNAL_A

SIGNAL_B

TEMP_A

TEMP_B

CLIP_A

CLIP_B

M-

NTC Sense

RMSLIM

Comun Comun.Sch

FBKA

FBKB

FBKC

FBKD

OUTA

OUTD

OUTB

OUTC

REPL. BY

Sheet 1 of 8DWG No.

DRAWN

DESIGN

REPLACE

RAM Audio - S Series

S3004 - S4004 - S4044

Signals Block Diagram

A

7654321

8

B

C

D

A

B

C

D

+15

-15

R32

GA

C30

D7 1N4148

R44

R137

C62

470n/50V

47k

39k

M+

5551

GA

T15A

R50

Q61

MSA

2n2/100V

100n/100V

R70

4k7

-15

C31

100u/16V

MA

D9 1N4148

47k

LIMA2

100k

R89

10k

Q69

5401

T16A

1N4148

D24

LIMA

Q135

5551

C194

R422

2k

C191

10u/35V

T22A

IOUT-A

1 2 3 4 5 6 78

GA

20k

GA

R113

3k92

-15

GA

6

7

R88

1M

Q72

MPSA13

R104

+15

+15

R71

D20

1N4148

39k

150k

5401

R404

330R

R402

1k8

R417

220R

R423

10R/1W

R5

0R33/4W

R6

0R33/4W

R7

0R33/4W

D98 MURS160T3

R61

2k

3k3

5

LM393

T18A

T14A

D13 1N4148

R420

R407

Q133

-15

R69

1M

U6B

RMSLim

D16 1N4148

+15

1N4148

D15

Q66

MPSA13

R121

2k7

D23 1N4148

LIMA

G1A

-15

100n/100V

C192

R409100R

G1A

MJF15031

Q1

1N4148

Q134

5551

R401

100k

T20A

R397

15k

D83

1N4148

BAS85

Q2

MJE15032

Q3

MJW21196

IOUT+A

Q4

MJW21196

Q5

MJW21196

GA

R43

3k3

3

2

84

10u/35V

C29

10u/35V

U6A

LM393

GA

1

47k

T12A

MA

-15

R112

100k

D1C

LEDC

Gadap

-15

R381

20k

D77

1N4148

M-

Q140

MMBTA92

470p/50V

C201

Q132

PZT2907A

R450

75R

T24A

G1A

D92

MURS160T3

D90

D94

+15

GA

Q67

5551

LEDA

-15

ERRORA

R421

12k

R74

10k

R60 82k5

C48

R68

4k7

R75

R102

10k

TEMP_INA

R87

1k5

D1B

GA

TEMP_AINA

R128

47k

RT1 N TC 10k

G1A

t

G1A

620R

D82

1N4148

M+

Q150

MMBTA42

100p/50V

C188

470p/50V

C196

R437

75R

R439

4R7/1W

R442

22R/1W

33n/100V

C202

OUTA

OUTA

15k

47u/16V

R398

100R

J10

1k5

R49

5551

LEDA

-15

5551

GA

R65

C51

47u/16V

-15U1

Adapt In 1

R86

475R

Q57

Q58

123

TEMP_INA

+15

R123

100R

GA

C64

47u/16V

+15U1

J13

SIGNAL_INA

Gadap

-15

7

-15OTA1+15OTA1

GA

Q65

5401

T10A

Q60

5401

R59

1k

CLIP_INA

D1D

R124

680R

10u/35V

5551

C46

5

GsA

3k3

7k5

470p/50V

8

324

C54

GsA

8 9

S4B

GAB

R98

390k

20k

1

116

U8A

LM13700M

R101100R

R111

100R

R103

Q64

R67

GA

R125

100k

Q74

MPSA13

J24

IN.A

1

2

INA- INA+

R83

10k

R95

10k

R96

10k

GsA

C61

100p/50V

3

2

8 4

+15U1

U7A

5532

T1A

R46

4k7

100n/100V

100n/100V

S6H

SWAB

R56

47k

R93 475R

38dB

R94 1k5

32dB

R109 NC

26dB

GsA

LIMA

GsA

T5A

R117

LIMA2

GsA

R100

100R

GA

R99

39k

+15

12k

+15

SWAB

R126

3k3

R119

47k

Q71

5401

470p/50V

4k7

470p/50V

C57

R118

S6F

+15

C52

22p/50V

+15

6

R82

C43

1k5

7

T2A

10u/50V

R1

10k

10u/50V

R47

47k

20k

C44

100p/50V

GsA

C E

R84

3

2

-15U2
5532

R97

1k5

T4A

1

C47

100u/16V

nc

R85

1k

+15

611

R66

C36

15k

10p/100V

T8A

FBKA

R73

C40

-15U1

10k

nc

nc

+15U2

GsA

6

C25

C26

15k

7

ERRORA

7 10

15k

R48

5

5532

T6A

S6G

SWAB

C35

220n/50V

R64

LEDA

GsA

100p/50V

U5B

3k3

10u/16V

75k

GA

100p/50V

R116

C55

R55

470k

R108

-15

GA

GA

R72

1k5

C42

10u/16V

Q63

5401

D1A

R178

10k

-15

Q80

5551

R196

10k

SIGNAL_INA

+15

C28

1

C38

C39

5

U7B

5532

C24

C19

R42

MSA

B

T3A

Q59

SST111

84

U5A

BRIDGEA

C53

R57

300k

T7A

OUTA

+15

-15

+15

+15

T11A

R127

1N4148

D115

NTC Sense

+15

R382

3k01

C177

R399

12k

RV2

500R

R388 475R

+15

R383

20k

G1A

+15

C206

100n/100V

R446

100R

G1A

R452

150k

MJF15030

Q8

Q143

PZT2222A

MURS160T3

D107

1N4148

1N4148

MJE15033

T19A

D103

Q145

5401

R427

100k

R426

15k

BAS85

D116

Q14

Q9

MJW21195

Q10

MJW21195

Q11

MJW21195

MURS160T3

R135

100R

R120

100R

GB

C56

47u/16V

C72

47u/16V

+15OTA1

-15OTA1

J14

Adapt In 4

Adapt In 3

123

IOUT+A

IOUT-A

+V2AC

CLIP_A

SIGNAL_A TEMP_A

Adapt Ou t

11 12

13 14

15 16

Q147

5401

2n2/100V

C204

R447

2k

R441

39k

10u/35V

C203

T21A

Q146

5551

R432

330R

R428

1k8

D101

220R

R448

R449

10R/1W

R8

0R33/4W

R9

0R33/4W

R10

0R33/4W

D113

+15

-15

R110

100R

R31

100R

GA

C45

47u/16V

C27

47u/16V

+15U2

-15U2

J7

Adapt In 2

123

1

2

CLIP_INA

TEMP_AINA

OUTA

Gadap

Gadap

VRAIL_A

VOUT_A

IOUT_A

TEMPA_A

J19

1 2

3 4

5 6

7 8

9 10

+15

-15

G15

LIMA

D17

1N4148

T9A

-15

R58

1k5

GA

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S

S3004 - S4004- S4044

Channel A Schematic

Sheet 2 of 8DWG No: Channel A.Sch

-V2AC

IRFI1310N

Q7

R405

47R

5551

Q141

5401

R411

7k5

1N4148

R418

3k92

D99

12V

R412

10k

R416

10k

R415

47k

R414

47k

A

R419

15k

D100

15V

5551

Q139

5551

D88

Q137

47k

1n/100V

1N4148

22u/16V

C190

100p/100V

R413

D96

1N4148

R410

10k

C187

100n/100V

C189

D89

FFPF30U60S

R406

1R/1W

C186

Q138

27p/100V

D91

-V1AC

C193

R424

NC

Q136

5401

D87

D97

1N4148

1N4148

OUTA

D93

12V

B

100n/100V

1R/1W

C200

D102 FFPF30U60S

R436

+V1AC

R429 100k

Q142

5551

D108

1N4148

1N4148

OUTA

IRFI1310N

Q151

5401

D110

D105

12V

Q13

+V2AC

R431

15k

D112

15V

R445

47R

Q149

5551

D1171N4148 D111

R444

10k

R443

3k92

5401

R438

10k

1N4148

1N4148

D104

1N4148

R430 10k

C199

1n/100V

C

C197 27p/100V

Q144

5551

D106

1N4148

22u/16V

C205

R440

2k

Q148

D109

100p/100V

C198

R435

47k

R434

47k

+V2AC

47k

R433

D

7654321

8

A

-15

+15

R136 15k

GB

C74

1 2 3 4 5 6 78

GB

20k

GB

R212

3k92

-15

GB

470n/50V

DESIGN

REPLACE

REPL. BY

S3004 - S4004- S4044

Channel B Schematic

Sheet 3 of 8DWG No: Channel B.Sch

100n/100V

GB

R176

4k7

-15

C78

100u/16V

MB

M+

D26 1N4148

D29 1N4148

47k

R145

R151

47k

LIMB2

Q79

5551

100k

R195

10k

Q88

5401

T16B

R229

1N4148

D46

39k

C107

LIMB

MSB

2n2/100V

Q193

5551

C246

R543

2k

C245

10u/35V

T22B

0R33/4W

IOUT-B

T28B

DRAWN

RAM Audio - S

R162

10k

5

6

LM393

7

T18B

R194

1M

T14B

D37 1N4148

Q89

MPSA13

R205

+15

+15

R177

D44

1N4148

R542

39k

Q200

5401

R564

330R

R566

1k8

R548

220R

R544

10R/1W

R17

0R33/4W

R18

R19

0R33/4W

D186

MURS160T3

-15

R175

1M

U12B

RMSLim

D39 1N4148

+15

1N4148

D38

Q83

MPSA13

R218

2k7

D45 1N4148

LIMB

G1B

-15

100n/100V

C241

R554100R

G1B

R535

150k

MJF15031

Q35

1N4148

Q199

5551

R567

100k

T20B

R569

15k

D195

1N4148

BAS85

Q29

MJE15032

Q30

MJW21196

Q31

MJW21196

IOUT+B

Q32

MJW21196

-V2BD

IRFI1310N

47R

Q194

5401

7k5

R547

3k92

D181

12V

10k

R540

10k

R541 47k

47k

R539

GB

R144

2k7

3

2

84

10u/35V

C73

10u/35V

U12A

LM393

GB

1

47k

T12B

MB

-15

R211

100k

D2C

LEDC

Gadap

-15

R691

20k

D274

1N4148

M-

Q185

MMBTA92

470p/50V

C258

Q195

PZT2907A

R570

75R

T24B

G1B

D192

MURS160T3

D193

D187

15k

Q34

D182

15V

R546

Q192

5551

R533

D168

1N4148

Q190

5551

R532

R534

47k

10k

C240

1n/100V

+15

GB

Q86

5551

-15

ERRORB

R552

12k

R553

22u/16V

C237

100p/100V

D174

1N4148

R531

LEDB

R185

12k

R161 82k5

C93

R174

4k7

R186

R204

10k

R193

1k5

TEMP_INB

D2B

GB

TEMP_AINB

R146

47k

15k

RT3 NTC 10k

G1B

t

G1B

47u/16V

R683

620R

D273

1N4148

M+

Q203

MMBTA42

100p/50V

C260

470p/50V

C266

R594

75R

R600

4R7/1W

R592

22R/1W

33n/100V

C261

OUTB

OUTB

D194

FFPF30U60S

C238

5551

Q189

27p/100V

D171

1N4148

-V1BD

C243

Q188

5401

D163

D175

1N4148

1N4148

D191

12V

+15

+15

R129

C300

R387475R

1R/1W

100n/100V

R538

NC

12k

PZT2222A

IN.B

R189

3

T1B

100n/100V

100n/100V

6

7

R150

3

5532

1

nc

R216

2

2

1

C85

C86

5

U17B

5532

10u/50V

SST111

T3B

U15A

R209

300k

T7B

OUTB

D

J28

1

R201

10k

R184

C87

-15U3

10k

nc

C71

MSB

+15U4

6

C66

SWAB

T29B

GsB

15k

7

ERRORB

2 15

15k

GsB

R192

5

5532

T6B

SWAB

220n/50V

R168

LEDB

5 12

U15B

S6B

10u/16V

C81

S6E

GsB

S6D

SWAB

100p/50V

100p/50V

R215

3k3

C98

R154

470k

R207

75k

-15

GB

GB

R183

1k5

C89

10u/16V

Q81

5401

D2A

R179

10k

GB

SIGNAL_INB

C92

-15

Q77

5551

R163

10k

+15

413

BRIDGEA

7654321

8

U17A

nc

Q87

R225

1k5

84

C113

B

-15

R170

100R

47u/16V

-15U4

J16

Adapt In 4

123

IOUT+B

IOUT-B

Gadap

T11B

1N4148

D203

NTC Sense

+15

R689

3k01

R684

500R

RV4

Q212

R605

Q37

MJW21195

Q38

MJW21195

Q39

MJW21195

15k

150k

5401

R568

T19B

Q215

R608

BAS85

MURS160T3

5401

2n2/100V

C263

R576

2k

R584

39k

10u/35V

C264

T21B

Q217

5551

R603

330R

R604

1k8

D221

220R

R585

R577

10R/1W

R20

0R33/4W

R21

0R33/4W

R22

0R33/4W

T27B

D219

C265

100n/100V

R602

1R/1W

R601

100k

OUTB

+15

R688

20k

G1B

+15

C251

100n/100V

R578

100R

G1B

MJF15030

Q42

Q213

MURS160T3

D217

D220

1N4148

100k

D213

1N4148

Q36

MJE15033

R565

C250

OUTB

C

+15

R226

100R

GB

C103

47u/16V

C91

+15U4

J8

Adapt In 3

123

CLIP_INB

TEMP_AINB

Gadap

CLIP_B

SIGNAL_B TEMP_B

Adapt Ou t

11 12

13 14

15 16

LIMB

D43

1N4148

T9B

-15

R171

1k5

GB

IRFI1310N

D216 FFPF30U60S

5401

+V1BD

5551

Q214

D215

D214

1N4148

1N4148

D218

12V

+15

-15

R220

100R

R169

100R

GB

C111

47u/16V

C94

47u/16V

+15U3

-15U3

J15

Adapt In 1

J11

Adapt In 2

123

1

2

TEMP_INB

SIGNAL_INB

GsB

-15

Q85

680R

Q208

10u/35V

R227

15k

D198

R599

R598 47k

C77

12

5551

R590

C25222u/16V

100p/100V

C257

R591

47k

47k

GsB

390k

9

141513

R160100R

100R

R217

3k3

Q84

R172

7k5

C95

470p/50V

1N4148

R156

LM13700M

R210

100k

MPSA13

2k

3 14

R208475R

38dB

R2001k5

32dB

S4A

GAB

R199NC

26dB

GsB

LIMB

GsB

T5B

R142

20k

LIMB2

16

GsB

U8B

R159

100R

GB

R157

39k

+15

R143

12k

+15

SWAB

R224

3k3

R223

GB

47k

R228

Q90

5401

Q91

+V2BD

Q210

5551

C262

27p/100V

D209

R575

+V2BD

SWAB

OUTB

Gadap

Gadap

VOUT_B

IOUT_B

TEMPA_B

J20

1 2

3 4

5 6

7 8

9 10

+15

-15

G15

10

GB

R203

475R

5401

1k5

Q75

5551

T10B

R158

Q76

5551

Q82

5401

GB

R173

1k

CLIP_INB

D2D

LEDB

Q41

D199

15V

R583

47R

Q206

5551

Q207

R582

D1971N4148 D208

10k

R573

3k92

5401

R589

10k

1N4148

1N4148

D206

1N4148

R597

10k

C259

1n/100V

GsB

S6C

470p/50V

4k7

470p/50V

S6A

+15

C99

22p/50V

+15

C90

T2B

10k

47k

R221

-15U4

1k5

C112

116

INB- INB+

10k

R202

10k

C108

100p/50V

8 4

+15U3

5532

R149

4k7

R155

47k

R188

1k5

C70

R2

10u/50V

C67

R190

20k

C109

100p/50V

GsB

2

R222

T4B

C110

100u/16V

1k

+15

R191

C104

15k

10p/100V

T8B

FBKB

A

B

C

D

A

B

C

D

+15

-15

R232 3k3

GC

C122

D47 1N4148

R238

R302

C144

470n/50V

100n/100V

GC

R253

4k7

-15

C121

100u/16V

MC

M+

D48 1N4148

47k

R239

47k

LIMC2

Q96

5551

100k

R266

10k

Q103

5401

T16C

1N4148

D55

39k

LIMC

MSC

2n2/100V

Q172

5551

C236

R516

2k

C231

10u/35V

IOUT-C

0R33/4W

0R33/4W

T28C

1 2 3 4 5 6 78

GC

20k

GC

R293

3k92

-15

GC

R246

2k

5

6

LM393

7

T18C

R265

1M

T14C

D49 1N4148

Q106

MPSA13

R284

+15

+15

R259

D53

1N4148

39k

T22C

5401

R494

330R

R495

1k8

R512

220R

R521

10R/1W

R14

R16

0R33/4W

R15

D151

U19B

R520

Q170

1M

+15

Q101

MPSA13

R519

150k

5551

T20C

15k

IOUT+C

MURS160T3

G1C

Q169

R252

R492

D51 1N4148

1N4148

D50

LIMC

100n/100V

G1C

BAS85

-15

RMSLim

R291

2k7

D54 1N4148

C233

R498100R

MJF15031

Q22

1N4148

R493

100k

D145

1N4148

MJE15032

Q24

MJW21196

Q25

MJW21196

Q26

MJW21196

GC

R237

3k3

3

2

84

10u/35V

C120

10u/35V

U19A

LM393

GC

1

T12C

47k

MC

-15

R292

100k

D3C

LEDC

Gadap

-15

R384

20k

D78

1N4148

M-

-15

Q182

MMBTA92

470p/50V

Q168

PZT2907A

75R

T24C

G1C

D152

MURS160T3

D150

D155

Q23

5551

C215

R486

+15

GC

Q102

LEDC

-15

ERRORC

12k

R257

10k

R245 82k5

C133

R251

4k7

R258

R274

10k

R275

1k5

TEMP_INC

D3B

GC

TEMP_AINC

R131

47k

RT2 N TC 10k

G1C

t

G1C

D84

1N4148

MMBTA42

R503

100p/50V

C209

470p/50V

C210

R461

75R

R467

4R7/1W

R473

22R/1W

33n/100V

C216

OUTC

OUTC

+15

-15

R298

100R

R297

1N4148

1N4148

R474

NTC Sense

+15

+15

+15

G1C

MJF15030

Q18

Q19

MJE15033

100R

GD

C139

47u/16V

C148

47u/16V

+15OTA2

-15OTA2

J18

Adapt In 4

Adapt In 3

123

123

CLIP_INC

IOUT+C

IOUT-C

Gadap

Adapt Ou t

Q158

5401

2n2/100V

C221

2k

R470

39k

10u/35V

C219

R479

150k

T21C

Q156

5551

R459

330R

T19C

D122

Q155

5401

R456

15k

MJW21195

MJW21195

MJW21195

R454

BAS85

MURS160T3

1k8

D118

220R

R481

R485

10R/1W

R12

0R33/4W

R11

0R33/4W

R13

0R33/4W

D120

R455

100k

D136

Q15

Q16

Q17

+15

+15

T11C

R130

15k

1N4148

D135

R378

3k01

C174

47u/16V

R396

12k

R403

620R

500R

RV1

R389475R

M+

Q162

PZT2222A

R379

20k

G1C

C224

100n/100V

100R

Q153

MURS160T3

D127

+15

-15

R282

100R

R231

100R

GC

C131

47u/16V

C117

47u/16V

+15U6

-15U6

J9

J12

Adapt In 2

1

2

TEMP_AINC

OUTC

Gadap

Gadap

VOUT_C

IOUT_C

TEMPA_C

CLIP_C

SIGNAL_C TEMP_C

J21

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

+15

-15

G15

1N4148

T9C

R243

1k5

R480

T27C

+15

-15

R294

100R

R248

100R

GC

C143

47u/16V

C134

47u/16V

+15U5

-15U5

J17

Adapt In 1

123

TEMP_INC

SIGNAL_INC

Gadap

GsC

-15

C132

10u/35V

5

7

-15OTA2

LIMC

D52

-15

1k5

R236

GC

GC

R264

475R

Q98

5401

Q92

5551

Q93

5551

GC

D3D

LEDC

R283

3k3

T10C

5551

Q95

5401

7k5

R244

1k

470p/50V

CLIP_INC

R295

680R

GsC

8 9

S5B

GCD

R270

390k

20k

8

1

116

U20A

LM13700M

324

R273100R

R290

100R

Q100

R250

C137

R296

100k

Q105

MPSA13

GsC

100p/50V

S7H

SWCD

R279475R

38dB

R2801k5

32dB

R278NC

26dB

C129470p/50V

T2C

GsC

10k

LIMC

GsC

47k

T5C

R287

GsC

LIMC2

GsC

R262

4k7

+15OTA2

R272

100R

GC

-15U6

470p/50V

1k5

C140

R271

39k

+15

R288

12k

+15

+15

611

S7F
SWCD

+15

R249

R299

3k3

C135

15k

22p/50V

T8C

R289

GC

47k

Q104

5401

+15

IN.C

INC- INC+

R268

10k

R281

10k

C142

3

8 4

+15U5

5532

T1C

R233

4k7

100n/100V

100n/100V

R241

47k

6

R261

1k5

7

10u/50V

C116

R3

10u/50V

C115

R234

R230

20k

100p/50V

C130

C E

3

2

5532

R269

T4C

1

C136

100u/16V

nc

R263

1k

C124

10p/100V

FBKC

1

5

5532

T3C

U18A

OUTC

2

R242

300k

1

10k

2

U21A

C125

C126

U21B

MSC

B

SST111

84

BRIDGEC

C141

T7C

J30

R267

R256

C127

-15U5

10k

100p/50V

7 10

R286

3k3

S7G

SWCD

C138

10u/16V

C123

220n/50V

R247

15k

C114

nc

LEDC

nc

C118

GsC

Q94

+15U6

GsC

R235

15k

100p/50V

5

6

U18B

5532

7

T6C

ERRORC

R240

470k

R277

75k

-15

GC

GC

R255

1k5

C128

10u/16V

Q99

5401

D3A

R180

10k

GC

SIGNAL_INC

C119

-15

Q78

5551

R164

10k

+15

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S

S3004 - S4004- S4044

Channel C Schematic

Sheet 4 of 8DWG No: Channel C.Sch

C217

47k

R483

C21422u/16V

R484

+V2AC

Q166

5551

C222

27p/100V

1N4148

D140

7654321

R478

2k

+V2AC

D

8

-V2AC

IRFI1310N

Q28

R510

47R

5551

Q184

5401

R515

7k5

R525

3k92

D166

12V

R514

10k

R523

10k

R524

47k

47k

R522

A

R527

15k

D167

15V

Q183

22u/16V

D154

1N4148

Q179

5551

R517

47k

1N4148

R513

10k

C232

1n/100V

5551

Q176

1N4148

C235

100p/100V

D164

D144

100n/100V

C223

C230

FFPF30U60S

R491

1R/1W

27p/100V

D161

-V1AC

C239

R518

NC

Q178

5401

D153

D165

1N4148

1N4148

OUTC

D162

12V

B

D119 FFPF30U60S

R453

1R/1W

C208

100n/100V

+V1AC

R487

100k

5551

Q165

D142

1N4148

1N4148

OUTC

D141

12V

C

IRFI1310N

5401

D143

Q21

15k

D131

15V

R472

47R

Q160

5551

Q157

R477

D1381N4148 D139

10k

R465

3k92

5401

R482

10k

D137

1N4148

Q161

D130

100p/100V

1N4148

1N4148

R488

10k

C220

1n/100V

R490 47k

R489 47k

A

20k

GD

-15

PZT2907A

15V

5551

R685

Q239

D250

Q235

1n/100V

C151

10u/35V

MURS160T3

R655

47k

GD

R306

2k7

3

2

84

10u/35V

U22A

LM393

1

47k

T12D

MD

-15

R356

100k

D4C

LEDC

Gadap

ERRORD

D271

1N4148

M-

Q233

MMBTA92

12k

470p/50V

C275

R610

75R

T24D

G1D

D268

R668

15k

D266

5551

Q236

1N4148

22u/16V

C286

100p/100V

D253

1N4148

R650

10k

C285

R329

12k

+15

R316 82k5

C162

GD

R323

4k7

R330

R342

10k

Q116

5551

R343

1k5

TEMP_IND

D4B

LEDD

GD

-15

TEMP_AIND

R276

47k

RT4 N TC 10k

G1D

t

G1D

620R

D272

1N4148

M+

Q219

MMBTA42

R645

100p/50V

C297

470p/50V

C281

R632

75R

R638

4R7/1W

R631

22R/1W

33n/100V

C276

OUTD

OUTD

D259

1R/1W

C284 27p/100V

FFPF30U60S

D251

100n/100V

C296

-V1BD

Q234

5401

D249

D252

1N4148

1N4148

D254

12V

+15

-15

R301

GD

C152

D56 1N4148

R307

C178

470n/50V

M+

47k

5551

R371

39k

2n2/100V

100n/100V

GD

R325

4k7

-15

C154

100u/16V

MD

D57 1N4148

47k

R308

LIMD2

Q109

100k

R344

10k

Q117

5401

T16D

1N4148

D69

LIMD

MSD

Q243

5551

C293

R653

2k

C292

10u/35V

T22D

0R33/4W

0R33/4W

0R33/4W

T28D

1 2 3 4 5 6 78

GD

20k

GD

R357

3k92

-15

GD

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S

S3004 - S4004- S4044

Channel D Schematic

Sheet 5 of 8DWG No: Channel D.Sch

R350

330R

1k8

220R

10R/1W

1M

R331

R678

R677

R659

R648

R26

R27

R28

5

6

LM393

7

T18D

R335

T14D

D60 1N4148

Q120

MPSA13

+15

+15

D66

1N4148

R647

39k

Q248

5401

D258

MURS160T3

-V2BD

15k

U22B

R670

150k

5551

T20D

15k

5401

10k

1M

+15

Q114

MPSA13

G1D

Q245

R680

IRFI1310N

Q242

12V

R660

R657

R317

R324

D62 1N4148

1N4148

100n/100V

C287

G1D

BAS85

47R

R667

3k92

D265

R661

10k

47k

47k

R671100R

100k

Q51

Q52

Q53

D61

D68 1N4148

LIMD

MJF15031

1N4148

R679

D270

1N4148

MJW21196

MJW21196

MJW21196

R646

7k5

10k

Q56

MJE15032

-15

RMSLim

R355

2k7

-15

D269

D267

Q50

Q55

Q238

5551

R651

1N4148

R658

15k

47u/16V

R681

R673

OUTD

IN.D

3

7

3

R339

R304

2

1

5

5532

10u/50V

10u/50V

T3D

U24A

R354

300k

OUTD

D

J32

1

R338

10k

2

R327

C157

-15U7

10k

nc

nc

SWCD

MSD

+15U8

6

C145

C149

SST111

T29D

GsD

15k

7

ERRORD

2 15

15k

5 12

Q118

5

5532

T6D

SWCD

220n/50V

R318

LEDD

GsD

S7E

R334

U24B

S7B

10u/16V

C153

GsD

S7D

SWCD

100p/50V

100p/50V

R352

3k3

C164

R309

470k

R345

75k

-15

GD

GD

R326

1k5

C158

10u/16V

Q111

5401

D4A

R260

10k

GD

10k

SIGNAL_IND

C161

-15

Q97

5551

R254

+15

413

BRIDGEC

7654321

8

U23A

C155

C156

U23B

R366

1k5

84

C175

nc

T7D

B

-15

R320

100R

123

Gadap

C280

R641

R643

R618

R615

R25

R24

T27D

IOUT-D

2n2/100V

R23

GD

47u/16V

C160

47u/16V

-15U8

J26

Adapt In 3

123

CLIP_IND

TEMP_AIND

Gadap

CLIP_D

SIGNAL_D TEMP_D

Adapt Ou t

13 14

15 16

C278

R617

2k

T27D

100n/100V

1R/1W

R639

100k

+15 +15

Adapt In 4

T11D

R285

1N4148

D229

NTC Sense

+15 +15

R687

3k01

C299

R682

12k

RV3

500R

R390475R

Q229

R642

Q43

MJW21195

Q44

MJW21195

Q45

MJW21195

15k

150k

5401

R607

Q231

R644

BAS85

MURS160T3

5401

R628

39k

10u/35V

T21D

Q232

5551

330R

1k8

D247

220R

10R/1W

0R33/4W

0R33/4W

IOUT-D

0R33/4W

D242

R686

20k

G1D

+15

C268

100n/100V

R619

100R

G1D

MJF15030

Q49

Q227

PZT2222A

MURS160T3

D245

D246

1N4148

100k

D238

1N4148

Q46

MJE15033

C291

C

+15

R377

100R

C169

+15U8

J33

Adapt In 2

TEMPA_D

7 8

9 10

11 12

1N4148

T9D

R321

1k5

C283

R640

+V1BD

5551

Q228

1N4148

OUTD

12V

+15

-15

R359

100R

R319

100R

GD

C172

47u/16V

C163

47u/16V

+15U7

-15U7

J27

Adapt In 1

J31

123

1

2

TEMP_IND

SIGNAL_IND

OUTD

Gadap

Gadap

VOUT_D

IOUT_D

J22

1 2

3 4

5 6

-15

G15

+15

10

LIMD

D65

R341

475R

-15

1k5

Q107

5551

T10D

R313

Q108

5551

5401

GD

1k

CLIP_IND

D4D

LEDD

GD

IRFI1310N

5401

D240

Q48

R614

47R

5551

Q221

R616

10k

R609

3k92

R625

10k

D234

1N4148

R635

10k

1n/100V

D243 FFPF30U60S

D241

1N4148

D244

GsD

3 14

SWCD

R346475R

38dB

GsD

R3471k5

32dB

S5A

GCD

R353NC

26dB

GsD

R311

390k

LIMD

9

141513

R315100R

100R

R349

Q112

R328

7k5

C166

470p/50V

R626

100p/100V

C273

47k

R636 47k

LM13700M

R363

100k

MPSA13

C27022u/16V

R627

GsD

T5D

R305

20k

LIMD2

16

GsD

U20B

R314

100R

GD

R312

39k

+15

R300

12k

+15

S7A

SWCD

R370

3k3

R362

GD

47k

R369

Q119

5401

Q121

Q225

5551

27p/100V

1N4148

D236

R613

2k

+V2BD

-15

C150

10u/35V

12

GD

Q113

5401

3k3

5551

Q110

R322

R368

1k5

15k

D223

15V

Q223

D2271N4148 D235

5401

Q220

D228

1N4148

1N4148

C274

R637 47k

GsD

S7C

470p/50V

4k7

470p/50V

+15

C165

22p/50V

+15

+V2BD

C277

C159

T2D

10k

R360

-15U8

R367

C179

116

R348

10k

C173

100p/50V

8 4

+15U7

5532

R303

4k7

R310

47k

R332

1k5

C146

R4

C147

R333

47k

C168

100p/50V

GsD

2

1k5

T4D

C171

100u/16V

1k

+15

C170

R340

10p/100V

15k

T8D

FBKD

IND- IND+

10k

T1D

100n/100V

100n/100V

6

20k

5532

1

R361

A

B

C

D

A

B

C

D

D282

47k

10k

T34

G

100k

R712

33u/16V

R716

R537

1N4148

T32

Q253

5401

R709

1M

G

G

C305

G

Q251

5401

R713

47k

D283

1N4148

+RM

15AC

R529

10k

47k

Q181

5551

R528

5551

1N4148

1k

Q180

D176

1N4148

G

R536

T15

M+M-

D275

1 2 3 4 5 6 78

D284

5V1

+15

R704

300k

T33

G

D5D

STBY+ON

R700

3k92

-RM

R703

47k

R530

1k

5401

T38

1N4148

G

Q186

D172

G

R526

47k

Q187

5401

NTC Sense

T30

G

Q249

5401

R358

14k

-15

D59

5V1

D58

12V

7k5

100k

R336

R351

1k

+15

8 4
47u/16V

G

100k

MJD350

Q12

MJD350

Q20

24V DC FAN1

1

R698

C306

R374

C303 1n/100V

R690 100k

+15

G

R365

100R

3

2

-15
C3 100n/100V

47u/16V

U25A

LM393

C308

G

1

R364

1k

R372

2k

R380

10R

Q6

5401

T31

47u/16V

C14

R337

4k7

R373

7k5

R385

4R7

+15

R386

4R7

J38

2

J4

A XLR F

4
3
2
1

J3

B XLR F

4
3
2
1

J2

C XLR F

4
3
2
1

J1

D XLR F

4
3
2
1

J6

FASTON

2
1

J25

FASTON

2
1

S3

PARAL

J5

CON8

8
7

S2

PARAL

S1

PARAL

6
5
4
3
2
1

REPL. BY

Sheet 6 of 8DWG No: Comun.Sch

-V1BD

-V1AC

D170

-RM

1N4148

G G1A G1B G1C G1D GsA GsB GsC GsD GA GB GC GD GADAP G15

G5

D173

1N4148

D178

1N4148

DRAWN

DESIGN

REPLACE

RAM Audio - S Series

S3004 - S4004- S4044

Inputs, protections & fans

+V1BD

+V1AC

+RM

D169

1N4148

G

G

100k

100u/10V

R693

C307

OUTD

R692

100k

C304

100u/10V

R674 33k

D280 1N4148

OUTB

R66933k

1N4148

L3

100uH

10u/35V

10u/35V

L2

100uH

24V DC FAN2

1

2

OUTA

OUTC

G

R694

100k

G

C301

100u/10V

D276

G

R695

100k

C298

100u/10V

R705

10k

LM393

R376 33k

U25B

D279 1N4148

1n/100V

6

T37

1k5

R375 33k

1N4148

T36

C309

7

DCS

D277

5

R696

C15

C16

J39

10k

20k

150k

L5

100uH

L4

100uH

-15
TEMP_A

VOUT_B

TEMPA_B

CLIP_B

SIGNAL_B

TEMP_B

17 18

19 20

21 22

23 24

25 26

SIGNAL_A

TEMPA_A

IOUT_B

CLIP_A

CLIP_C

LSTBY

G +15

R711

R710

470n/50V

R697

C302

10u/100V

C8

+V2BD +V1BD -V2BD-V1BD

C182

10u/100V

D5A

STBY+ON

10u/100V

C9

10u/100V

C11

10u/100V

C12

10u/100V

C13

R701

330R

-15

G

470n/50V

10u/100V

C10

+V2AC +V1AC

-V2AC-V1AC

10u/100V

C183

TEMP_D

13 14

15 16

VOUT_A

IOUT_A

C312

-

C311

1k

Cinta

10u/100V

10u/100V

10u/100V

10u/100V

VOUT_C

VOUT_D

IOUT_D TEMPA_D

SIGNAL_C

TEMP_C CLIP_D

VRAIL_A

EtheRAM Signals

1 2

3 4

5 6

7 8

9 10

11 12

SIGNAL_D

TEMPA_C

IOUT_C

RMSLim

T13

+15

R715

DCS

Cinta

J37

123

4

C4

+V2BD

+V1BD

-V1BD

C5

C7

C6

-V2BD

JST

6

-15

GsA

GsC

G15 +15

INB+

G5

G5

J29

17 18

19 20

+5

15AC

+15

-15

G5

+5

OUTD

OUTB

JST

J36

12345

IND+

INC-

J23

EtheRAM IN

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

INA+INA-

INC+

INB-

+5

FBKD

IND-

GsB

GsD

FBKA

FBKB

FBKC

J34

123456789

+V2AC

+V1AC

-V2AC

-V1AC

OUTA

OUTC

J35

12345

6

7654321

8

A

B

C

D

A

B

C

D

1 2 3 4 5 6 78

R47C

100k

MJD350

Gp

R613C 15k

-15c
100k

E

U25C

TLP181

3C4

REPL. BY

Sheet 7 of 8DWG No: Control S.Sch

1A2

R614C

2k

SD

D209C1N4148 D210C1N4148

Q203C

5401

R612C

47k

DESIGN

REPLACE

RAM Audio - S Series

S3004 - S4004 - S4044

Power Supply Control Schematic

LM393

Gp

K

5551

47k

-15c

Vm

DRAWN

Q49C

R34C

2

Q204C

R319C

R29C

220k

D18C

1N4148

470n/50V

-15c

3

1

Gp

15V

C8C

10u/16V

U2CA

47u/16V

LIMIT

HEADER 15X2

D16C

+

C3C

10u/16V

+C7C

10k

84

1k

MPSA13

+

Gp

29 30

COM

Vm

R32C

10k

R705C

Q51C

TR1

27 28

LO

R33C 820R

+15c

R146C

C15C

25 26

15V

470n/50V

+
C17C

10u/16V

Vm Vc

R68C

220k

Gp

470n/50V

R75C

10k

21 22

23 24

HI

Vs

D19C

C4C

10u/16V

HCPL0453

C265C

1N4148

19 20

+15c

+C32C

10k

10p/100V

C266C

D15C

47k

LIMIT

-15c

15 16

17 18

Vm

Rl

R77C

R56C

13 14

Vc

MJD340

LM393

GpGp

TR

Rl

+V

11 12

Q57C

R133C100k

5401

9 10

+V

100k

6

7

Q61C

Vac

7 8

47p/50V

47p/50V

5 6

Vac

R46C

5

U10C

MURS160T3

C72C

C76C

100k

U2CB

2k7

D22C

4k7

Tb

3 4

4 MHz

1 2

Ta

+V

R76C

R78C

MURS160T3

R67C

+15p

JP1C

1N4148

3k32

Y1C

GpGpGp

Gp

+15c

D207C

R700C

C268C

100p/50V

D23C

470k

+15c

R210C

1k

100n/100V

TR1

+15p

R57C

Gp

10M

C41C

LM393

R204C

C1C

R40C

1M

R108C

1M

R87C

390k

84

R131C

1k5

C264C

10u

100n/100V

C40C

7
5
4
6
14
13
15
1
2
3

1N4148

Gp

MURS160T3

+V

1M

1M

470p/50V

D38C

4

R

Q

U9C

3

R36C

75R

R48C

75R

10R

9

U12C

NC

5

C82C

220n/50V

100n/100V

1n/100V

5

U15C

SOFTSTART

8

R141C

2k

Gp

8

150k

1k5

R197C

MURS160T3

2

Gp

15

C81C

C77C

12

R180C 10k

D208C 1N4148

7k5

R189C

100n/100V

R140C

R132C

VS

D35C

D44C

MURS160T3

Gp

SD

C47C

COM

+15p

+15p

+

1u/16V

7654321

Gp

C69C

8

D20C

Vac

TR

C58C

100n/100V

GpGp

1

1N4148

D206C

TR1

Gp

10u/16V

+15p

SD

+V

R69C

R70C

D46C

1N4148

COM

100n/100V

C73C

+15p

C78C

100n/100V

Gp

+15p

C62C

R173C

2k

R159C

1k

Gp

5

CVolt

GND

THR

555

6

+

C56C

TLP3062

Tb

HI

R205C

10R

HO8NC

11

VDD

3

VCC

HIN

IR2110S

12

SG3525AP

OSC OUT4OUTA11OUTB14VREF16DISC7COMPN9CT

VC13GND

IN+

IN-

1

2

Gp

+5p

D40C

5V1

2

TRIG

VCC

DIS

7

U1C

Ta

LO

1N4148

10

1

4

LO

NC

COM

LIN

SD

Vs

6

13

14

SD

VS

+5p

OSC SYNC

VIN+

SD

10

3

15

+15p

D45C

NC16NC

VSS
Vb

7

R188C

100R

RT

6

Gp

100n/400V

R35C

11

10

12

10M

+15p

D37C

C68C

9

Gp

L1C

D34C

3
7
8

Gp

4060

Gp

Gp

R125C

TR1

16

VCC

CIN

COUT

COUT

RST

GND

8

470k

1k5

470k

4.7uF/16V

C2C

100n/400V

S2D
S

NC

S
S

TOP242G

+

C44C

47u/16V

C24C

100n/100V

+15p

M

C

R145C

R126C

C23C

LM393

U7C

LED

D39C

+5p

+5p

R130C

3k01

3

2

U8CA

1

Gp

5
1
6
4

D28C

9V1

R109C

22R

D26C

MURS160T3

R158C

680R

Q4
Q5
Q6
Q7
Q8

Q9
Q10
Q12
Q13
Q14

U13C

R66C

20k

R139C

2k

1N4148

R107C

15k

R88C

1k

5

6

U8CB

7

Gp

MURS160T3

Vc

3m32

+
C53C

47u/16V

100n/100V

Gp

Gp

A

B

C

D

A

1 2 3 4 5 6 78

B

C

D

REPL. BY

REPLACE

DESIGN

Channel B Channel B.Sch

VOUT_B

IOUT_B

TEMPA_B

INB+

INB-

VINPOS_B

VINSW_B

TEMP_B

CLIP_B

DRAWN

FBKB OUTBM+M-

NTC SenseBRIDGEA

RMSLIM

INA-

INA+

VINPOS_A

VOUT_A

IOUT_A

TEMPA_A

VRAIL_A

NTC SenseBRIDGEA

VINSW_A

TEMP_A

CLIP_A

Channel A Channel A.Sch

M+

TEMPA_A

VOUT_B

IOUT_B

TEMPA_B

IOUT_A

INA+

INA-

INB+

INB-

FBKA OUTAM+M-

VRAIL_A

RMSLIM

Control_S Control_S.Sch

VINPOS_B

VOUT_A

VINPOS_A

VINSW_A

VINSW_B

TEMP_A

TEMP_B

CLIP_A

CLIP_B

M-

NTC Sense

RMSLIM

Comun Comun.Sch

FBKA

FBKB

OUTA

OUTB

Sheet 1 of 5DWG No.

RAM Audio - S Series

S1500 - S2000 - S3000 - S4000

Signals Block Diagram

A

7654321

8

B

C

D

A

-15

+15

R93

GB

C53

D21 1N4148

R99

R163

C75

470n/50V

100n/100V

GB

R121

4k7

-15

C55

100u/16V

MB

M+

D22 1N4148

47k

R104

47k

LIMB2

Q58

5551

100k

R136

10k

Q65

5401

T16B

39k

MSB

2n2/100V

Q126

5551

C129

R296

2k

C130

10u/35V

T22B

0R33/4W

0R33/4W

0R33/4W

0R33/4W

0R33/4W

T28B

1 2 3 4 5 6 78

GB

20k

GB

R150

3k92

-15

GB

3k3

5

6

LM393

7

T18B

R128

1M

T14B

D23 1N4148

Q67

MPSA13

R142

+15

+15

R123

R171

2k7

R295

39k

Q129

5401

R309

330R

1k8

R308

R299

220R

R289

10R/1W

R22

R230R33/4W

R21

R24

R25

R26

D126 MUR S160T3

R114

2k

-15

R122

1M

U5B

RMSLim

D24 1N4148

+15

1N4148

D25

Q61

MPSA13

R149

2k7

D28 1N4148

LIMB

G1B

-15

100n/100V

C124

R304100R

G1B

R305

150k

MJF15031

Q36

1N4148

Q127

5551

R310

100k

T20B

R311

15k

D118

1N4148

BAS85

MJW21196

Q31

MJW21196

Q32

MJW21196

Q33

MJW21196

Q37

MJW21196

Q38

MJW21196

Q39

GB

R98

3k3

3

2

84

10u/35V

C52

10u/35V

U5A

LM393

GB

1

47k

T12B

MB

-15

R151

100k

D2C

LEDC

Gadap

-15

R328

20k

D129

1N4148

M-

Q119

MMBTA92

470p/50V

C116

Q125

PZT2907A

R263

75R

T24B

G1B

D116

MURS160T3

D117

D115

MJE15032

Q34

+15

GB

Q63

5551

-15

ERRORB

R288

12k

LEDB

R127

10k

R113

C64

82k5

R119

4k7

R120

R134

10k

R135

1k5

TEMP_INB

D2B

GB

TEMP_AINB

R143

47k

15k

RT2 NTC 10k

G1B

t

G1B

47u/16V

R325

620R

D128

1N4148

M+

Q109

MMBTA42

100p/50V

C132

470p/50V

C121

R276

75R

R277

4R7/1W

R273

22R/1W

33n/100V

C117

OUTB

OUTB

B

-15

100R

R106

39k

123

Gadap

R272

0R33/4W
IOUT-B

0R33/4W

0R33/4W

D96MURS160T3

T21C

D106

IOUT+B

10u/35V

5551

100R

GB

C69

47u/16V

C60

47u/16V

-15U4

J15

J21

Adapt In 3

Adapt In 2

123

CLIP_INB

TEMP_AINB

VinposB

IOUT-B

IOUT_B

TEMPA_B

CLIP_B

VINSW_B

VINPOS_B

Adapt Ou t

5 6

7 8

9 10

11 12

13 14

15 16

TEMP_B

G15

Q114

5401

2n2/100V

C118

R267

2k

C120

Q118

R283

330R

R284

1k8

220R

R268

R265

10R/1W

R18

IOUT+B

R190R33/4W

R20

R15

R160R33/4W

R170R33/4W

T27B

+15

+15

Adapt In 4

T11B

R129

1N4148

D94

NTC Sense

+15

R330

3k01

C140

R326

12k

500R

RV2

R354 475R

+15

R329

20k

G1B

+15

C113

100n/100V

R266

100R

G1B

R262

150k

MJF15030

Q30

Q112

PZT2222A

MURS160T3

D103

1N4148

1N4148

MJE15033

T19B

D105

Q117

5401

R285

100k

R287

15k

BAS85

D97

Q25

Q26

MJW21195

Q27

MJW21195

Q28

MJW21195

Q21

MJW21195

Q22

MJW21195

Q23

MJW21195

C

+15

R162

+15U4

1

2

OUTB

VinswB

VOUT_B

1 2

3 4

+15

-15

+15

-15

GsB

S3C

470p/50V

4k7

470p/50V

S3A

+15

C65

22p/50V

+15

C59

T2B

10k

47k

R153

-15U4

1k5

C76

116

10k

R141

10k

C73

100p/50V

8 4

+15U3

5532

R95

4k7

R101

47k

R124

1k5

C49

R2

10u/50V

C47

R125

20k

100p/50V

C68

GsB

2

R157

T4B

C71

100u/16V

1k

+15

R132

C70

15k

10p/100V

T8B

FBKB

INB- INB+

T1B

100n/100V

100n/100V

6

1

R156

100R

R116

100R

GB

C72

47u/16V

C62

47u/16V

+15U3

-15U3

GsB

J16

Adapt In 1

J19

123

TEMP_INB

Gadap

Gadap

J8

10

LIMB

D26

1N4148

T9B

-15

1k5

R111

R103

1k5

GB

GB

R133

475R

5401

Q55

5551

T10B

Q56

5551

Q57

5401

GB

R112

1k

CLIP_INB

D2D

LEDB

3 14

SWAB

R145475R

38dB

GsB

R1401k5

32dB

S2A

GAB

R139NC

26dB

GsB

R107

390k

LIMB

9

141513

R109100R

100R

R147

3k3

Q62

R118

7k5

C66

470p/50V

LM13700M

R148

100k

MPSA13

GsB

T5B

R96

20k

LIMB2

16

GsB

U4B

R110

100R

GB

R108

39k

+15

R97

12k

+15

SWAB

R160

3k3

R155

GB

47k

R159

Q66

5401

Q68

-15

C51

10u/35V

12

Q60

5551

R158

680R

D

J17

IN.B

1

2

R131

R130

10k

3

2

R117

C58

-15U3

10k

NC

NC

MSB

+15U4

6

C46

C50

VinposB

T29

GsB

15k

7

ERRORB

2 15

15k

5

5532

T6B

SWAB

220n/50V

R105

LEDB

R126

U7B

S3B

10u/16V

C54

SWAB

GsB

S3D

SWAB

100p/50V

100p/50V

R152

3k3

C67

R100

470k

R144

75k

-15

GB

GB

R115

1k5

C63

10u/16V

Q59

5401

D2A

GB

GsB

512

S3E

413

BRIDGEA

C61

U6A

1

C56

C57

5

U6B

5532

7

VinswB

10u/50V

R102

SST111

Q64

T3B

R161

1k5

3

84

U7A

5532

C74

NC

R154

R146

300k

T7B

OUTB

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S

S1500 - S2000 - S3000 - S4000

Channel B Schematic

Sheet 3 of 5DWG No: Channel B.Sch

R286 1R/1W

100n/100V

R274 100k

D8

FFPF30U60S

C123

+V1B

Q115

5551

D98

1N4148

1N4148

IRFI1310N

Q116

5401

D99

D92

12V

Q29

R280

47R

5551

R279

10k

R282

3k92

R281

10k

1N4148

D102

1N4148

R275 10k

1n/100V

+V2B

R264

15k

D101

15V

Q113

D1001N4148 D104

5401

1N4148

C119

C114 27p/100V

Q110

5551

D93

1N4148

22u/16V

C122

R278

2k

Q111

D95

100p/100V

C115

R271

47k

47k

R270

+V2B

47k

R269

C

D

7654321

8

-V2B

IRFI1310N

5401

A

Q35

R300

15k

D108

15V

R292

47R

Q124

5551

Q120

R297

7k5

1N4148

R291

3k92

D111

12V

R303

10k

R294

10k

R293

47k

R298

47k

5551

D110

Q123

47k

1n/100V

5551

1N4148

22u/16V

C125

100p/100V

R301

D113

1N4148

R302

10k

C126

100n/100V

D9

C128

FFPF30U60S

R307

1R/1W

C131

Q122

27p/100V

D109

-V1B

C127

R290

NC

Q121

5401

D107

D114

1N4148

1N4148

OUTB

D112

12V

B

A

B

C

D

1 2 3 4 5 6 78

D135

1N4148

Q137

5551

1M

Q101

+V1B

R247 10k

5401

R346

C143

15AC

T32

Q139

G

G

G

R351

47k

+RM

D136

1N4148

R249

1k

R245

47k

Q100

5551

T35

D77

1N4148

D130

1N4148

G

+V1A

D78

1N4148

+RM

REPL. BY

Sheet 4 of 5DWG No: Comun.Sch

D138

5V1

+15

47k

R341

300k

T33

G

D11D

STBY+ON

R337

3k92

-RM

R340

47k

R248

1k

Q102

5401

T38

M-

1N4148

G

1N4148

DRAWN

DESIGN

REPLACE

RAM Audio - S Series

S1500 - S2000 - S3000 - S4000

Inputs, protections & fans

G

R244

47k

Q103

5401

-V1A

D79

1N4148

100k

G G1A G1B G1C G1D GsA GsB GsC GsD GA GB GC GD GADAP G15

G5

D80

-V1B

D85

-RM

T34

G

R246

1N4148

R350

33u/16V

5401

R353 10k

D81

NTC Sense

T30

G

Q249

5401

R358

14k

-15

D6

5V1

D3

12V

M+

OUTB

G

R694

100k

R695

100k

G

G

C301

100u/10V

C298

100u/10V

R705

10k

LM393

7k5

100k

R376 33k

D279 1N4148

U25B

T37

L3

100uH

L2

100uH

OUTA

R375 33k

1n/100V

6

1k5

R336

+15

R170

G

MJD350

MJD350

1N4148

T36

C309

5

7

R696

DCS

1k

8 4

47u/16V

100k

Q24

Q20

24V DC FAN1

1

10u/35V

10u/35V

24V DC FAN2

1

D277

R698

C306

R374

2

2

R690 100k

2k

7k5

G

3

J38

C5

C7

J39

10k

20k

150k

C303 1n/100V

J4

A XLR F

VOUT_B

IOUT_B

15 16

17 18

VINSW_B

Gadap

-

470n/50V

C148

C149

Cinta

JST

4
3
2
1

J3

A XLR M

4
3
2
1

S1

J2

B XLR F

4
3
2
1

J1

B XLR M

4
3
2
1

J6

FASTON

2
1

J12

FASTON

2
1

VOUT_A

IOUT_A

CLIP_A

VINSW_A

Gadap

Gadap

EtheRAM Signals

1 2

3 4

5 6

7 8

9 10

11 12

13 14

VINPOS_A

TEMPA_A

TEMP_A

RMSLim

4

+V2B

6

Gadap

R352

T13

-V1B

DCS

-V2B

123

+V1B

VRAIL_A

+15

Cinta

J25

OUTB

OUTB

12345

VRAIL_A

1k

PARAL

-15

GsA

G15 +15

INB+

G5

G5

J9

15AC

-15

G5

+5

OUTA

JST

J36

6

9 10

11 12

13 14

15 16

17 18

19 20

INB-

+5

+5

GsB

FBKA

FBKB

+15

J22

123456789

OUTA

+V2A

+V1A

-V2A

-V1A

J35

12345

7 8

INA+INA-

J5

CON8

4
3
2
1

GsA

J10

EtheRAM IN

1 2

3 4

5 6

GsB

10u/100V

+V2A +V1A -V2A-V1A

C2

10u/100V

C3

10u/100V

C6

10u/100V

C4

7654321

8

+15

R365

100R

2

-15

C13 100n/100V

47u/16V

U25A

LM393

C308

G

1

R364

1k

R372

R380

10R

Q4

5401

T31

47u/16V

C14

R168

4k7

R373

R385

4R7

+15

R386

4R7

L5

100uH

TEMP_B

Gadap

Gadap

Gadap

L4

100uH

-15

19 20

21 22

23 24

25 26

VINPOS_B

TEMPA_B

CLIP_B

Gadap

LSTBY

R338

330R

G +15

R711

R710

R697

470n/50V

C302

+V2B +V1B -V2B-V1B

STBY+ON

10u/100V

C8

10u/100V

C9

10u/100V

C12

10u/100V

C11

D11A

-15

G

A

B

C

D

A

+15

-15

R28 3k3

GA

C22

D12 1N4148

R32

47k

R94

39k

C45

470n/50V

5551

GA

M+

R38

Q46

MSA

2n2/100V

T15

10k

100n/100V

R48

4k7

-15

C25

100u/16V

MA

D13 1N4148

47k

LIMA2

100k

R69

Q51

5401

T16A

LIMA

Q89

5551

C99

R226

2k

C96

10u/35V

T22A

5401

R10 0R33/4W

R11 0R33/4W

R12 0R33/4W

R13 0R33/4W Q18

R14 0R33/4W Q19

T28A

1 2 3 4 5 6 78

GA

20k

GA

R82

3k92

-15

GA

R47

2k

5

6

LM393

7

T18A

R59

1M

T14A

D14 1N4148

Q53

MPSA13

R77

+15

+15

R55

R172

2k7

R225

39k

150k

Q87

R210

330R

R209

1k8

R223

220R

R229

10R/1W

R9

0R33/4W

D66

U2B

MPSA13

R230

5551

T20A

15k

R54

1M

+15

Q49

G1A

100n/100V

G1A

MJF15031

Q86

R207

BAS85

Q11

Q12

Q13

Q17

MURS160T3

D15 1N4148

1N4148

Q14

D16

LIMA

C98

100k

2k7

D19 1N4148

R213

100R

1N4148

R208

D56

1N4148

MJE15032

MJW21196

MJW21196

MJW21196

MJW21196

MJW21196

MJW21196

-15

RMSLim

R89

-15

Q15

GA

R31

3k3

3

2

84

10u/35V

C21

10u/35V

U2A

LM393

GA

1

47k

T12A

MA

-15

R83

100k

D1C

LEDC

Gadap

-15

20k

PZT2907A

D57

D64

ERRORA

R166

D30

1N4148

M-

Q94

MMBTA92

470p/50V

C88

Q85

R202

75R

T24A

G1A

D63

MURS160T3

R52

10k

+15

R46 82k5

C33

GA

R51

4k7

R53

R67

10k

Q50

5551

TEMP_INA

R68

1k5

D1B

LEDA

GA

-15

TEMP_AINA

R137

47k

RT1 N TC 10k

G1A

t

G1A

47u/16V

620R

R169

D31

1N4148

M+

Q81

MMBTA42

R218

12k

100p/50V

C83

470p/50V

C84

R187

75R

R191

4R7/1W

R194

22R/1W

33n/100V

C89

OUTA

OUTA

IN.A

2

INA- INA+

R61

10k

3

U3A

5532

1

T1A

R29

100n/100V

100n/100V

5

6

5532

7

10u/50V

C17

10u/50V

C16

R30

20k

C35

T3A

3

2

U1A

5532

1

NC

R57

C24

R42

10p/100V

300k

OUTA

1

10k

2

C26

C27

U3B

VinswA

VinposA

MSA

SST111

84

BRIDGEA

T7A

D

J11

R60

R50

C28

-15U1

10k

100p/50V

7 10

R84

3k3

S3G

SWAB

C41

10u/16V

C23

220n/50V

R39

15k

C15

NC

LEDA

NC

C19

GsA

Q43

+15U2

C40

GsA

R36

15k

100p/50V

5

6

U1B

5532

7

T6A

ERRORA

R33

470k

R70

75k

-15

GA

GA

R49

1k5

C29

10u/16V

Q47

5401

D1A

GA

C20

B

123

Adapt Ou t

5401

10u/35V

Q77

0R33/4W

+15

-15

R75

100R

R27

100R

GA

C31

47u/16V

C18

47u/16V

+15U2

-15U2

J20

J18

Adapt In 2

1

2

CLIP_INA

TEMP_AINA

VinposA

OUTA

VinswA

VRAIL_A

VOUT_A

IOUT_A

TEMPA_A

CLIP_A

VINSW_A

VINPOS_A

J7

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

TEMP_A

+15

-15

G15

Q78

2n2/100V

C92

R200

2k

C91

R185

330R

R183

1k8

220R

R201

R203

10R/1W

R60R33/4W

R7

R8

IOUT+AIOUT-A

R5

R3

T27A

+15

-15

R91

100R

R88

+15

+15

R138

15k

C77

R167

12k

R355 475R

PZT2222A

Q74

100R

GB

C42

47u/16V

C48

47u/16V

+15OTA1

-15OTA1

J13

Adapt In 4

Adapt In 3

123

IOUT+A

IOUT-A

+V2A

T11A

1N4148

D49

NTC Sense

+15

R164

3k01

500R

RV1

+15

R165

20k

R195

G1A

+15

C93

100n/100V

R196

100R

G1A

MJF15030

Q5

MURS160T3

D45

1N4148

1N4148

MJE15033

39k

R206

150k

T21A

5551

T19A

D42

Q76

5401

R182

100k

R181

15k

MJW21195

MJW21195

MJW21195

MJW21195

MJW21195

MJW21195

D53

BAS85

D41

0R33/4W

0R33/4W

R4

0R33/4W

0R33/4W

MURS160T3

D50

Q10

Q6

Q7

Q8

Q1

Q2

Q3

C

+15

-15

R90

100R

R40

100R

47u/16V

-15U1

Adapt In 1

C34

123

GA

C43

47u/16V

+15U1

J14

TEMP_INA

Gadap

Gadap

1k5

R35

R58

475R

Q41

5551

Q42

5551

GA

LEDA

-15OTA1+15OTA1

T10A

5401

1k

CLIP_INA

D1D

LIMA

D17

1N4148

T9A

-15

R43

1k5

GA

GsA

8 9

38dB

GsA

32dB

S2B

GAB

26dB

R64

390k

10u/35V

R86

LIMA

T5A

C32

R85

20k

8

5

1

GsA

116

U4A

LM13700M

R65

100R

324

R74

39k

R66100R

+15

R81

100R

R76

3k3

3k3

Q48

5551

R45

7k5

R80

C38

470p/50V

GA

47k

R87

100k

Q52

5401

Q54

MPSA13

-15

7

GA

Q45

5401

Q44

R37

680R

LIMA2

GA

+15

R92

GsA

S3H

SWAB

R71 475R

R72 1k5

R78 NC

GsA

GsA

470p/50V

R79

12k

S3F

SWAB

+15

470p/50V

C30

T2A

R63

4k7

C39

611

C36

22p/50V

+15

10k

C44

100p/50V

+15U1

R41

47k

10k

R34

47k

GsA

-15U2

R62

1k5

100u/16V

+15

R44

15k

T8A

FBKA

R73

8 4

4k7

R56

1k5

R1

100p/50V

T4A

C37

1k

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S

S1500 - S2000 - S3000 - S4000

Channel A Schematic

Sheet 2 of 5DWG No: Channel A.Sch

R186 1R/1W

100n/100V

R192 100k

D4

FFPF30U60S

C87

+V1A

Q82

5551

D47

1N4148

1N4148

IRFI1310N

Q83

5401

D48

D43

12V

Q9

R199

47R

5551

R198

10k

R205

3k92

R204

10k

1N4148

D54

1N4148

R193 10k

1n/100V

+V2A

R184

15k

D52

15V

Q80

D51 1N4148 D55

5401

1N4148

C90

C85 27p/100V

Q75

5551

D44

1N4148

22u/16V

C94

R197

2k

Q79

D46

100p/100V

C86

R190

47k

47k

R189

47k

+V2A

R188

C

D

7654321

8

-V2A

IRFI1310N

Q16

R216

47R

5551

Q88

5401

R227

7k5

R211

3k92

D59

12V

R219

10k

R220

10k

47k

R221

47k

R222

A

R215

15k

D58

15V

5551

Q91

1N4148

5551

D67

Q92

47k

1n/100V

1N4148

22u/16V

C102

100p/100V

R224

D62

1N4148

R228

10k

C101

100n/100V

C97

D5

FFPF30U60S

R212

1R/1W

C100

Q90

27p/100V

D65

-V1A

C95

R217

NC

Q93

5401

D68

D61

1N4148

1N4148

OUTA

D60

12V

B

A

B

C

D

1 2 3 4 5 6 78

R47C

100k

MJD350

Gp

R613C15k

-15c
100k

E

U25C

TLP181

3C4

REPL. BY

Sheet 5 of 5DWG No: Control S.Sch

1A2

K

R614C

2k

SD

D209C1N4148 D210C1N4148

Q203C

5401

R612C

47k

DESIGN

REPLACE

RAM Audio - S Series

S1500 - S2000 - S3000 - S4000

Power Supply Control Schematic

LM393

Gp

5551

47k

-15c

Vm

DRAWN

Q49C

R34C

2

Q204C

R319C

R29C

220k

D18C

1N4148

470n/50V

-15c

3

1

Gp

15V

U2CA

D16C

C8C

+

C3C

10u/16V

10u/16V

+C7C

10k

84

47u/16V

1k

MPSA13

LIMIT

HEADER 15X2

+

Gp

29 30

COM

Vm

R32C

10k

R705C

Q51C

TR1

27 28

LO

R33C 820R

+15c

R146C

C15C

25 26

470n/50V

+

10u/16V

Vm Vc

R68C

220k

Gp

470n/50V

10k

21 22

23 24

HI

Vs

15V

C17C

HCPL0453

R75C

19 20

D19C

C4C

+15c

10u/16V

+C32C

10k

10p/100V

C265C

D15C

1N4148

47k

LIMIT

-15c

15 16

17 18

Vm

Rl

R77C

C266C

LM393

R56C

13 14

Vc

GpGp

MJD340

TR

Rl

+V

11 12

Q57C

R133C100k

5401

9 10

+V

100k

6

7

Q61C

Vac

5 6

7 8

Vac

47p/50V

47p/50V

R46C

5

U10C

MURS160T3

Tb

3 4

C72C

C76C

100k

U2CB

2k7

D22C

4k7

1 2

Ta

4 MHz

R76C

R78C

MURS160T3

R67C

C1C

R40C

1M

R108C

1M

R87C

390k

84

R131C

1k5

C264C

10u/16V

100n/100V

C40C

7
5
4
6
14
13
15
1
2
3

1N4148

Gp

MURS160T3

+V

1M

1M

470p/50V

D38C

2k

1k

D20C

TR1

R69C

R70C

+15p

+V

R173C

R159C

GpGp

Gp

1N4148

100n/100V

+15p

100n/100V

+15p

C62C

Gp

1N4148

D206C

COM

Gp

Vac

C58C

100n/100V

1

555

+

C56C

10u/16V

SD

D46C

10R

C73C

11

3

C78C

SG3525AP

Gp

TR

2

5

TRIG

CVolt

GND
THR

DIS

7

6

TLP3062

Tb

Ta

HI

1N4148

R205C

1

4

LO

NC

HO8NC

VDD
VCC

HIN

LIN

SD

IR2110S

12

13

14

SD

+5p

OSC OUT4OUTA11OUTB14VREF16DISC7COMPN9CT

VC13GND

OSC SYNC

IN+

IN-

SD

10

1

3

2

+5p

D40C

5V1

U1C

LO

Vs

VS

VIN+

+15p

VCC

10

NC16NC

COM

VSS
Vb

6

R188C

RT

15

100R

4

R

Q

U9C

3

R36C

75R

R48C

75R

D45C

10R

9

U12C

NC

5

7

C82C

220n/50V

100n/100V

1n/100V

5

U15C

SOFTSTART

6

8

R141C

2k

Gp

8

150k

1k5

R197C

VS

MURS160T3

2

Gp

15

C81C

C77C

12

R180C 10k

D208C 1N4148

7k5

R189C

100n/100V

C47C

R140C

R132C

D35C

D44C

MURS160T3

Gp

SD

COM

+15p

+15p

+

1u/16V

7654321

Gp

C69C

8

Gp

100n/400V

R35C

10M

U8CB

+15p

11

9

10

12

D37C

L1C

C68C

Gp

3
7
8

D34C

Gp

4060

Gp

Gp

R125C

16

VCC

CIN

COUT

COUT

RST

GND

8

4u7/16V

TR1

C2C

100n/400V

S2D
S
S
S

47u/16V

C24C

100n/100V

+15p

470k

1k5

470k

NC

TOP242G

+
C44C

C23C

M

C

R145C

R126C

LM393

U7C

LED

D39C

+5p

+5p

R130C

3k01

3

2

U8CA

1

Gp

5
1
6
4

D28C

9V1

R109C

22R

D26C

MURS160T3

R158C

680R

Q4
Q5
Q6
Q7
Q8

Q9
Q10
Q12
Q13
Q14

U13C

R66C

20k

R139C

2k

1N4148

GpGpGp

Gp

+V

+15c

+15p

1N4148

D207C

R700C

3k32

C268C

100p/50V

D23C

470k

+15c

JP1C

Y1C

R210C

1k

100n/100V

TR1

+15p

R57C

10M

Gp

R204C

C41C

LM393

R107C

15k

R88C

1k

5

6

7

Gp

MURS160T3

Vc

3m32

+
C53C

47u/16V

100n/100V

Gp

Gp

A

B

C

D

A

1 2 3 4 5 6 78

B

C

D

IND-

IND+

Channel D Channel D.Sch

VOUT_C

IOUT_C

INC-

INC+

TEMPA_C

SIGNAL_C

NTC SenseBRIDGEC

TEMP_C

CLIP_C

VOUT_D

IOUT_D

TEMPA_D

SIGNAL_D

TEMP_D

CLIP_D

FBKD OUTDM+M-

NTC SenseBRIDGEC

RMSLIM

Channel C Channel C.Sch

VOUT_B

IOUT_B

TEMPA_B

INB+

INB-

FBKC OUTCM+M-

SIGNAL_B

RMSLIM

NTC SenseBRIDGEA

TEMP_B

CLIP_B

Channel B Channel B.Sch

FBKB OUTBM+M-

RMSLIM

INA-

INA+

VOUT_A

IOUT_A

TEMPA_A

VRAIL_A

SIGNAL_A

NTC SenseBRIDGEA

TEMP_A

CLIP_A

Control_S Control_S.Sch

Channel A Channel A.Sch

M+

TEMPA_A

VOUT_B

IOUT_B

TEMPA_B

IOUT_A

TEMPA_D

VOUT_C

IOUT_C

TEMPA_C

IOUT_D

VOUT_D

INA+

INA-

INB+

INB-

FBKA OUTAM+M-

VRAIL_A

RMSLIM

IND-

IND+

INC-

INC+

SIGNAL_C

SIGNAL_D

TEMP_D

TEMP_C

CLIP_D

CLIP_C

VOUT_A

SIGNAL_A

SIGNAL_B

TEMP_A

TEMP_B

CLIP_A

CLIP_B

M-

NTC Sense

RMSLIM

Comun Comun.Sch

FBKA

FBKB

FBKC

FBKD

OUTA

OUTD

OUTB

OUTC

REPL. BY

Sheet 1 of 7DWG No.

DRAWN

DESIGN

REPLACE

RAM Audio - S Series

S6004 - S6044

Signals Block Diagram

A

7654321

8

B

C

D

A

B

C

D

+15

-15

R32

GA

C30

D7 1N4148

R44

C62

470n/50V

100n/100V

GA

4k7

-15

C31

100u/16V

MA

M+

T15A

D9 1N4148

47k

R50

47k

LIMA2

Q61

5551

100k

R89

10k

Q69

5401

T16A

R137

1N4148

D24

39k

LIMA

MSA

2n2/100V

Q135

5551

C194

R422

2k

C191

10u/35V

T22A

10R/1W

0R33/4W

IOUT-A

0R33/4W

0R33/4W

1 2 3 4 5 6 78

GA

20k

GA

R113

3k92

-15

GA

6

7

R70

R88

1M

Q72

MPSA13

R104

+15

+15

R71

D20

1N4148

39k

100k

MMBTA63

R404

330R

R402

2k49

R417

220R

R423

R5

R6

R7

D98 MURS160T3

5

LM393

T18A

T14A

D13 1N4148

R420

Q133

R61

2k

3k3

-15

R69

1M

U6B

RMSLim

D16 1N4148

+15

1N4148

D15

Q66

MPSA13

R121

2k7

D23 1N4148

LIMA

G1A

-15

100n/100V

C192

R409 100R

MMBTA92

G1A

R407

R408100R

Q1

MJF18004

1N4148

Q134

5551

R401

100k

T20A

R397

33k

D83

1N4148

BAS85

Q2

MJE15032

Q3

MJW21196

IOUT+A

Q4

MJW21196

Q5

MJW21196

GA

R43

3k3

3

2

84

10u/35V

C29

10u/35V

U6A

LM393

GA

1

47k

T12A

MA

-15

R112

100k

D1C

LEDC

Gadap

-15

R381

20k

D77

1N4148

M-

Q140

MMBTA92

Q131

470p/50V

C201

Q132

PZT2907A

R450

75R

T24A

G1A

D92

MURS160T3

D90

D94

+15

GA

5551

-15

ERRORA

12k

R75

Q67

LEDA

R421

C48

1k5

GA

4R7/1W

R128

47k

G1A

D82

1N4148

100p/50V

C188

R439

33n/100V

R60 82k5

R87

D1B

22R/1W

470p/50V

R442

OUTA

OUTA

R74

10k

R68

4k7

R102

10k

TEMP_INA

TEMP_AINA

RT1 NTC 10k

t

G1A

M+

Q150

MMBTA42

C196

R437

75R

C202

47u/16V

620R

-15

R65

100R

GA

C64

47u/16V

C51

47u/16V

-15U1

Adapt In 1

J10

123

TEMP_INA

SIGNAL_INA

Gadap

R86

475R

1k5

Q57

5551

T10A

R49

Q58

5551

5401

GA

D1D

LEDA

+15

R123

100R

+15U1

J13

GsA

8 9

38dB

GsA

32dB

S4B

GAB

26dB

R98

390k

R124

10u/35V

5551

LIMA

T5A

C46

R117

20k

8

5

LIMA2

1

GsA

116

U8A

LM13700M

R100

100R

324

R99

39k

R101100R

+15

R111

100R

R103

3k3

R126

3k3

Q64

R67

7k5

R119

C54

470p/50V

GA

47k

R125

100k

Q71

5401

Q74

MPSA13

-15

7

-15OTA1+15OTA1

GA

Q65

5401

Q60

R59

1k

CLIP_INA

680R

SWAB

R93 475R

R94 1k5

R109 NC

GsA

GsA

GA

+15

12k

SWAB

GsA

S6H

470p/50V

4k7

470p/50V

C57

R118

S6F

+15

C52

22p/50V

+15

C43

T2A

10k

R84

-15U2

1k5

611

INA- INA+

10k

R96

10k

C61

100p/50V

8 4

+15U1

5532

T1A

R46

4k7

100n/100V

100n/100V

R56

47k

6

R82

1k5

10u/50V

R1

10u/50V

R47

47k

20k

C44

100p/50V

GsA

2

R97

T4A

1

C47

100u/16V

1k

+15

R66

C36

15k

10p/100V

T8A

FBKA

IN.A

2

R83

3

2

U7A

1

C38

C39

5

U7B

5532

7

C24

C19

R42

T3A

C E

SST111

3

84

U5A

5532

nc

R85

R57

300k

T7A

OUTA

J24

1

10k

nc

nc

MSA

B

Q59

+15U2

BRIDGEA

C53

GsA

6

R95

C25

C26

15k

7

ERRORA

-15U1

7 10

15k

5

5532

T6A

SWAB

220n/50V

GsA

R48

U5B

R64

LEDA

R73

10k

S6G

10u/16V

C35

100p/50V

C40

100p/50V

R116

3k3

C55

R55

470k

R108

75k

-15

GA

GA

R72

1k5

C42

10u/16V

Q63

5401

D1A

R178

10k

GA

10k

SIGNAL_INA

C28

-15

Q80

5551

R196

+15

TEMPA_A

9 10

-15

100R

123

CLIP_INA

IOUT_A

5 6

7 8

G15

R31

47u/16V

-15U2

TEMP_AINA

Gadap

VOUT_A

3 4

+15

+15

R110

100R

GA

C45

47u/16V

C27

+15U2

J7

Adapt In 2

1

2

OUTA

Gadap

VRAIL_A

J19

1 2

-15

LIMA

D17

1N4148

T9A

-15

R58

1k5

GA

+15

-15

+15

+15

T11A

R127

15k

1N4148

D115

NTC Sense

+15

R382

3k01

C177

R399

12k

R398

500R

RV2

R718 475R

+15

R383

20k

G1A

+15

C206

100n/100V

R446

100R

G1A

R452

100k

MJF18004

Q8

Q143

PZT2222A

MURS160T3

D107

1N4148

1N4148

MJE15033

T19A

D103

Q145

5401

R427

100k

R426

33k

BAS85

D116

Q14

Q9

MJW21195

Q10

MJW21195

Q11

MJW21195

MURS160T3

R135

100R

R120

100R

GB

C56

47u/16V

C72

47u/16V

+15OTA1

-15OTA1

J14

Adapt In 4

Adapt In 3

123

IOUT+A

IOUT-A

+V3AC

CLIP_A

SIGNAL_A TEMP_A

Adapt Out

11 12

13 14

15 16

Q147

5401

2n2/100V

C204

R447

2k

R441

39k

10u/35V

C203

T21A

MMBTA13

Q146

R432

330R

R428

2k49

D101

220R

R448

R449

10R/1W

R8

0R33/4W

R9

0R33/4W

R10

0R33/4W

D113

-V3AC

IRFI1310N

5401

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S Series

S6004 - S6044

Channel A Schematic

Sheet 2 of 7DWG No: Channel A.Sch

A

1R/1W

R451 1R/1W

D114

C195

R425

R390

FFPF30U60S

100n/100V

C207

+V1AC

R336 100k

Q115

5551

D63

1N4148

1N4148

OUTA

C

IRFI1310N

Q122

5401

D64

D59

12V

3k92

10k

1N4148

Q12

R387

15k

D80

15V

R389

47R

5551

R373

10k

R372

R364

1N4148

D58

R337 10k

1n/100V

Q125

5551

D75

1N4148

Q123

22u/16V

C184

D74 1N4148 D70

5401

2k

Q124

D67

1N4148

100p/100V

C181

R374

47k

47k

C167

R358

47k

R351

C182 27p/100V

R365

+V2AC

100n/100V

1R/1W

C200

D102 FFPF30U60S

R436

+V2AC

R429 100k

Q142

5551

D108

1N4148

OUTA

IRFI1310N

Q151

5401

D110 1N4148

D105

15V

3k92

10k

1N4148

Q13

+V3AC

R431

15k

D112

15V

R445

47R

Q149

5551

D1171N4148 D111

R444

10k

R443

5401

R438

1N4148

1N4148

D104

R430 10k

1n/100V

C199

D

Q148

D109

47k

R434 100k

R433 100k

Q144

5551

1N4148

22u/16V

C205

100p/100V

C198

R435

C197 27p/100V

D106

7654321

R440

2k

8

+V3AC

100n/100V

5551

1N4148

C180

100p/100V

D79

Q128

D73

1N4148

D95

FFPF30U60S

C176

27p/100V

-V1AC

C185

NC

Q126

5401

D71

D81

1N4148

D76

12V

100n/100V

C189

5551

Q138

D91

1N4148

C190

100p/100V

D96

1N4148

D89

FFPF30U60S

R406

1R/1W

C186

27p/100V

-V2AC

C193

R424

NC

Q136

5401

D87

D97

1N4148

15V

D93

R419

15k

Q7

D100

15V

R405

47R

Q139

5551

Q141

R411

7k5

R418

3k92

D99

12V

R412

10k

R416

10k

R415
100k

R414

100k

1N4148

5551

D88

Q137

47k

1n/100V

22u/16V

R413

1N4148

R410

10k

C187

IRFI1310N

Q6

R380

47R

5551

Q130

5401

R386

7k5

1N4148

R400

3k92

D85

12V

R394

10k

R392

10k

OUTA

47k

R393

R391

47k

B

R395

15k

D86

15V

Q129

22u/16V

D72

Q127

5551

R388

47k

1N4148

R385

10k

C183

1n/100V

A

-15

+15

R136 10k

GB

C74

1 2 3 4 5 6 78

GB

20k

GB

R212

3k92

-15

GB

470n/50V

DESIGN

REPLACE

REPL. BY

S6004 - S6044

Channel B Schematic

Sheet 3 of 7DWG No: Channel B.Sch

100n/100V

GB

R176

4k7

-15

C78

100u/16V

MB

M+

D26 1N4148

D29 1N4148

47k

R145

R151

47k

LIMB2

Q79

5551

100k

R195

10k

Q88

5401

T16B

1N4148

R229

D46

39k

C107

LIMB

MSB

2n2/100V

Q193

5551

C246

R543

2k

C245

10u/35V

T22B

0R33/4W

IOUT-B

T28B

-V3BD

DRAWN

RAM Audio - S Series

6

1M

MPSA13

R205

R177

1N4148

R564

330R

R566

2k49

R548

220R

R544

10R/1W

R17

0R33/4W

R18

R19

0R33/4W

IRFI1310N

Q194

5401

12V

100k

100k

5

LM393

7

T18B

R194

T14B

D37 1N4148

Q89

+15

+15

D44

39k

MMBTA63

Q200

MURS160T3

R547

3k92

D181

R540

10k

R541

R539

U12B

MPSA13

R542

100k

5551

T20B

33k

IOUT+B

D186

R546

47R

7k5

10k

R162

15k

R175

1M

D39 1N4148

+15

1N4148

Q83

G1B

100n/100V

C241

G1B

R535

R563100R

Q199

R569

BAS85

Q30 MJW21196

Q31 MJW21196

Q32

Q34

15V

Q192

5551

R533

1N4148

5551

R532

D38

LIMB

R554 100R

100k

D168

1n/100V

D45 1N4148

MJF18004

1N4148

R567

D195

MJW21196

Q190

R534

47k

2k7

Q35

1N4148

MJE15032

D182

-15

RMSLim

R218

-15

MMBTA92

Q29

C240

GB

R144

2k7

3

2

84

10u/35V

C73

10u/35V

U12A

LM393

GB

1

47k

T12B

MB

-15

R211

100k

D2C

LEDC

Gadap

-15

R691

20k

D274

1N4148

M-

Q185

MMBTA92

Q201

470p/50V

C258

Q195

PZT2907A

R570

75R

T24B

G1B

D192

MURS160T3

D193

D187

R553

15k

C238

5551

Q189

27p/100V

D171

1N4148

22u/16V

C243

C237

Q188

5401

100p/100V

D163

D175

1N4148

1N4148

D174

1N4148

R531

10k

+15

GB

R186

Q86

5551

LEDB

GB

-15

ERRORB

R552

12k

D194

FFPF30U60S

-V2BD

D191

15V

C93

1k5

47k

1N4148

100p/50V

R600

4R7/1W

100n/100V

1R/1W

NC

R161 82k5

R193

R146

G1B

D273

C260

22R/1W

33n/100V

R538

D2B

470p/50V

R592

OUTB

OUTB

C250

R565

OUTB

R185

12k

R174

4k7

R204

10k

TEMP_INB

TEMP_AINB

RT3 NTC 10k

t

G1B

620R

M+

Q203

MMBTA42

C266

R594

75R

C261

15k

47u/16V

R683

+15

+15

R129

C300

R717 475R

IRFI1310N

Q202

5401

12V

47k

47k

C91

Adapt In 3

C256

+V1BD

1N4148

100R

GB

C103

47u/16V

123

CLIP_INB

SIGNAL_B TEMP_B

Adapt Out

15 16

1N4148

T9B

R171

1k5

D207

FFPF30U60S

Q204

5551

D201

1N4148

TEMP_AINB

+15

+15U4

Gadap

CLIP_B

13 14

LIMB

-15

R226

J8

TEMPA_B

9 10

11 12

D43

R158

GB

IRFI1310N

Q216

5401

D204

D200

12V

C

100R

Adapt In 2

7 8

1k5

3k92

10k

1N4148

-15

IOUT_B

5 6

G15

R595

R586

D196

R169

47u/16V

-15U3

5551

LEDB

47R

1

Gadap

VOUT_B

3 4

+15

D

J28

IN.B

1

R202

10k

C108

100p/50V

8 4

+15U3

4k7

47k

R188

1k5

R2

10u/50V

R190

100p/50V

GsB

R222

1k5

T4B

C110

100u/16V

1k

+15

R191

15k

T8B

FBKB

D216 FFPF30U60S

Q214

D215

1N4148

D218

10k

5532

R149

R155

C70

C67

20k

C109

2

C104

10p/100V

IRFI1310N

R189

3

T1B

100n/100V

100n/100V

6

7

R150

3

5532

1

nc

R216

5401

D214

1

5

5532

10u/50V

SST111

T3B

U15A

R209

300k

OUTB

Q207

3k92

10k

1N4148

2

INB-INB+

R201

10k

2

R184

C87

-15U3

10k

nc

C71

MSB

+15U4

6

C66

SWAB

15k

7

ERRORB

R583

5551

T29B

GsB

R597

2 15

SWAB

15k

GsB

R192

5

5532

T6B

Q41

R582

10k

1n/100V

S6B

C81

220n/50V

R168

LEDB

5 12

S6E

GsB

SWAB

100p/50V

U15B

Q206

1N4148

10u/16V

GB

S6D

15V

D1971N4148 D208

5401

C259

3k3

75k

SIGNAL_INB

D199

1N4148

100p/50V

R215

C98

R154

470k

R207

-15

GB

GB

R183

1k5

C89

10u/16V

Q81

5401

D2A

R179

10k

-15

Q77

5551

R163

10k

+15

413

BRIDGEA

C92

+V3BD

R590

15k

Q210

5551

C262

27p/100V

1N4148

D209

C25222u/16V

2k

Q208

D198

100p/100V

C257

R591

47k

100k

R599

100k

R598

7654321

R575

8

+V3BD

U17A

C85

C86

U17B

nc

Q87

R225

1k5

84

C113

T7B

47R

R573

R589

D206

10k

+15

R220

100R

GB

C111

47u/16V

C94

+15U3

J15

Adapt In 1

J11

123

2

TEMP_INB

SIGNAL_INB

OUTB

Gadap

GsB

J20

1 2

-15

T10B

D2D

Q40

1N4148

1n/100V

5401

5551

10

R173

1k

CLIP_INB

15V

Q211

D2121N4148 D210

5401

C254

GB

5401

Q82

D211

1N4148

C77

10u/35V

12

Q85

3k3

5551

7k5

470p/50V

R227

680R

R574

15k

Q205

5551

1N4148

22u/16V

C267

Q209

D205

100p/100V

C255

R581

47k

47k

R580

47k

R579

-15

R203

475R

Q75

5551

Q76

GB

R596

R588

10k

R572 10k

GsB

3 14

S4A

GAB

R156

390k

20k

9

16

U8B

LM13700M

100R

141513

39k

R160100R

R210

100R

R217

Q84

R172

C95

GB

R228

100k

Q91

MPSA13

C253 27p/100V

D202

R587

2k

+V2BD

GsB

S6C

SWAB

R208475R

38dB

R2001k5

32dB

R199NC

26dB

470p/50V

C90

T2B

GsB

10k

LIMB

GsB

47k

T5B

R142

LIMB2

GsB

R221

4k7

R159

GB

-15U4

470p/50V

C112

R157

+15

R143

12k

+15

S6A

SWAB

116

+15

R224

3k3

C99

22p/50V

R223

47k

Q90

5401

+15

C265

100n/100V

R602

1R/1W

+V2BD

R601

100k

5551

1N4148

OUTB

15V

B

-15

R170

100R

47u/16V

-15U4

J16

Adapt In 4

123

IOUT+B

IOUT-B

Gadap

T11B

1N4148

D203

NTC Sense

+15

R689

3k01

R684

12k

500R

RV4

Q212

R605

33k

MJW21195

R562

22u/16V

1N4148

R549

R568

100k

Q215

5401

R608

5551

Q191

1N4148

C242

100p/100V

D188

39k

T19B

BAS85

D219

MURS160T3

D180

C248

D177

1N4148

R584

T21B

D221

0R33/4W

C247

27p/100V

5401

1N4148

5401

10u/35V

MMBTA13

D183

Q196

D185

C264

Q217

R603

330R

R604

2k49

220R

R585

R577

10R/1W

R20

0R33/4W

R22

0R33/4W

FFPF30U60S

-V1BD

D184

12V

2n2/100V

C263

2k

R21

100n/100V

1R/1W

NC

R576

T27B

R593 1R/1W

C249

R551

100n/100V

R556

R571 100k

OUTB

+15

R688

20k

G1B

+15

C251

100n/100V

R578

100R

G1B

MJF18004

Q42

Q213

PZT2222A

MURS160T3

D217

D220

1N4148

100k

D213

1N4148

Q36

MJE15033

Q37 MJW 21195

Q38 MJW21195

Q39

15k

Q33

D190

15V

R560

47R

Q198

5551

R550

7k5

D179

1N4148

R561

3k92

Q197

5551

D189

R545

10k

R555

47k

R559

10k

10k

C244

1n/100V

R558

R557

A

B

C

D

A

B

C

D

+15

-15

R232 3k3

GC

C122

D47 1N4148

R238

C144

470n/50V

100n/100V

GC

R253

4k7

-15

C121

100u/16V

MC

M+

D48 1N4148

47k

R239

47k

LIMC2

Q96

5551

100k

R266

10k

Q103

5401

T16C

1N4148

R302

D55

39k

LIMC

MSC

2n2/100V

Q172

5551

C236

R516

2k

C231

10u/35V

IOUT-C

0R33/4W

0R33/4W

T28C

1 2 3 4 5 6 78

GC

20k

GC

R293

3k92

-15

GC

R246

2k

5

6

LM393

7

T18C

R265

1M

T14C

D49 1N4148

Q106

MPSA13

R284

+15

+15

R259

D53

1N4148

39k

T22C

MMBTA63

R494

330R

R495

2k49

R512

220R

R521

10R/1W

R14

R16

0R33/4W

R15

D151

U19B

R520

Q170

1M

+15

Q101

MPSA13

R519

100k

5551

T20C

33k

IOUT+C

MURS160T3

R252

D51 1N4148

1N4148

G1C

R497100R

MJF18004

Q169

R492

D50

D54 1N4148

LIMC

100n/100V

C233

G1C

Q22

BAS85

Q24

Q25

Q26

R498 100R

100k

-15

RMSLim

R291

2k7

1N4148

R493

D145

1N4148

MJE15032

MJW21196

MJW21196

MJW21196

GC

R237

3k3

3

2

84

10u/35V

C120

10u/35V

U19A

LM393

GC

1

T12C

47k

MC

-15

R292

100k

D3C

LEDC

Gadap

-15

R384

20k

D78

1N4148

M-

-15

Q182

MMBTA92

MMBTA92

Q167

470p/50V

Q168

PZT2907A

75R

T24C

G1C

D152

MURS160T3

D150

D155

Q23

+15

GC

5551

C215

R486

C133

R258

Q102

LEDC

GC

-15

ERRORC

R503

12k

1k5

4R7/1W

R245 82k5

R275

D3B

R131

47k

G1C

D84

1N4148

100p/50V

C209

R467

33n/100V

TEMP_INC

470p/50V

22R/1W

OUTC

OUTC

R257

10k

R251

4k7

R274

10k

TEMP_AINC

RT2 NTC 10k

t

G1C

C210

R461

75R

R473

C216

+15

-15

R298

100R

R297

+15

+15

T11C

R130

15k

1N4148

D135

R378

3k01

C174

47u/16V

R396

12k

R403

620R

500R

RV1

R719 475R

M+

MMBTA42

20k

R379

Q162

G1C

C224

100n/100V

100R

Q153

PZT2222A

MURS160T3

100R

GD

C139

47u/16V

C148

47u/16V

+15OTA2

-15OTA2

J18

Adapt In 4

Adapt In 3

123

123

CLIP_INC

IOUT+C

IOUT-C

Gadap

Adapt Out

NTC Sense

+15

Q158

R455

MJW21195

MJW21195

MJW21195

33k

100k

5401

39k

R479

T19C

Q155

R454

BAS85

MURS160T3

5401

2n2/100V

C221

R470

10u/35V

C219

T21C

MMBTA13

Q156

R459

330R

R456

2k49

D118

220R

R481

R485

10R/1W

R12

0R33/4W

R11

0R33/4W

R13

0R33/4W

D120

+15

+15

R474

G1C

MJF18004

Q18

D127

D122

1N4148

100k

D136

1N4148

Q19

MJE15033

Q15

Q16

Q17

+15

-15

R282

100R

R231

100R

GC

C131

47u/16V

C117

47u/16V

+15U6

-15U6

J9

J12

Adapt In 2

1

2

TEMP_AINC

OUTC

Gadap

Gadap

VOUT_C

IOUT_C

TEMPA_C

CLIP_C

SIGNAL_C TEMP_C

J21

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

+15

-15

G15

1N4148

T9C

R243

1k5

R480

2k

T27C

+15

-15

R294

100R

R248

100R

GC

C143

47u/16V

C134

47u/16V

+15U5

-15U5

J17

Adapt In 1

123

TEMP_INC

SIGNAL_INC

Gadap

GsC

-15

C132

10u/35V

5

7

-15OTA2

LIMC

D52

-15

1k5

R236

GC

GC

R264

475R

Q98

5401

Q92

5551

Q93

5551

5401

GC

D3D

LEDC

T10C

R244

1k

CLIP_INC

R283

3k3

5551

Q95

7k5

470p/50V

R295

680R

GsC

8 9

S5B

GCD

R270

390k

20k

8

1

116

U20A

LM13700M

324

R273100R

R290

100R

Q100

R250

C137

R296

100k

Q105

MPSA13

GsC

100p/50V

S7H

SWCD

R279475R

38dB

R2801k5

32dB

R278NC

26dB

C129470p/50V

T2C

GsC

10k

LIMC

GsC

47k

T5C

R287

GsC

LIMC2

GsC

R262

4k7

+15OTA2

R272

100R

GC

-15U6

470p/50V

C140

1k5

R271

39k

+15

R288

12k

+15

+15

611

S7F
SWCD

+15

R249

R299

3k3

C135

15k

22p/50V

T8C

R289

GC

47k

Q104

5401

+15

IN.C

INC- INC+

R268

10k

R281

10k

C142

3

8 4

+15U5

5532

T1C

R233

4k7

100n/100V

100n/100V

R241

47k

6

R261

1k5

7

10u/50V

C116

R3

10u/50V

C115

R234

R230

20k

100p/50V

C130

C E

3

2

5532

R269

T4C

1

C136

100u/16V

nc

R263

1k

C124

10p/100V

FBKC

1

5

5532

T3C

U18A

OUTC

2

R242

300k

1

10k

2

C125

C126

U21B

SST111

84

BRIDGEC

T7C

J30

R267

R256

C127

-15U5

10k

nc

nc

+15U6

GsC

6

C114

C118

15k

7

ERRORC

7 10

15k

R235

5

5532

T6C

SWCD

220n/50V

R247

LEDC

GsC

U18B

S7G

10u/16V

C123

100p/50V

100p/50V

R286

3k3

C138

R240

470k

R277

75k

-15

GC

GC

R255

1k5

C128

10u/16V

Q99

5401

D3A

R180

10k

GC

10k

SIGNAL_INC

C119

-15

Q78

5551

R164

+15

U21A

MSC

B

Q94

C141

-V3AC

IRFI1310N

47R

Q184

5401

DRAWN

DESIGN

REPLACE

REPL. BY

R525

3k92

D166

12V

RAM Audio - S Series

S6004 - S6044

Channel C Schematic

R523

10k

100k

Sheet 4 of 7DWG No: Channel C.Sch

R524

100k

R522

A

100n/100V

R527

15k

Q28

D167

15V

R510

Q183

5551

R515

7k5

D154

1N4148

Q179

5551

R514

10k

R517

47k

1n/100V

C230

5551

Q176

27p/100V

D161

1N4148

22u/16V

C239

C235

Q178

5401

100p/100V

D153

D165

1N4148

1N4148

D164

1N4148

R513

10k

C232

D144

100n/100V

FFPF30U60S

-V2AC

NC

D162

15V

1R/1W

IRFI1310N

C223

R491

R518

OUTC

R496

47R

Q177

5401

7k5

R509

3k92

D159

12V

10k

R508

10k

47k

R507

47k

R506

15k

Q27

D160

15V

Q175

5551

R502

D148

1N4148

Q174

5551

R500

R504

47k

10k

C228

1n/100V

B

R501

22u/16V

1N4148

R499

5551

1N4148

C229

100p/100V

D157

Q171

D149

1N4148

D146

FFPF30U60S

1R/1W

C226

27p/100V

-V1AC

C234

R505

NC

Q173

5401

D147

D156

1N4148

D158

12V

R466 1R/1W

C227

R511

D126

FFPF30U60S

100n/100V

C218

+V1AC

R457 100k

Q152

5551

D123

1N4148

1N4148

OUTC

IRFI1310N

Q164

5401

D128

D124

12V

3k92

10k

1N4148

Q20

R460

15k

D133

15V

R476

47R

Q163

5551

D1341N4148 D132

R471

10k

R475

5401

R468

1N4148

1N4148

D121

R458 10k

C213

1n/100V

C

C211 27p/100V

Q154

5551

D125

1N4148

22u/16V

C225

R469

2k

Q159

D129

100p/100V

C212

R464

47k

47k

R463

+V2AC

47k

R462

D119 FFPF30U60S

R453

1R/1W

C208

100n/100V

+V2AC

R487

100k

5551

Q165

D142

1N4148

1N4148

OUTC

D141

15V

IRFI1310N

5401

D143

Q157

3k92

10k

1N4148

Q21

15k

D131

15V

R472

47R

Q160

5551

R477

D1381N4148 D139

10k

R465

5401

R482

D137

Q161

D130

100p/100V

1N4148

1N4148

R488

10k

1n/100V

100k

C220

100k

D

+V3AC

R483

Q166

5551

C222

27p/100V

1N4148

D140

C21422u/16V

R478

2k

C217

R484

47k

R490

+V3AC

R489

7654321

8

A

+15

-15

R301

GD

C152

D56 1N4148

R307

R371

C178

470n/50V

47k

5551

39k

2n2/100V

100n/100V

GD

R325

4k7

-15

C154

100u/16V

MD

M+

D57 1N4148

47k

R308

LIMD2

Q109

100k

R344

10k

Q117

5401

T16D

1N4148

D69

LIMD

MSD

Q243

5551

C293

R653

2k

C292

10u/35V

T22D

0R33/4W

0R33/4W

0R33/4W

T28D

-V3BD

1 2 3 4 5 6 78

GD

100k

GD

R357

3k92

-15

GD

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S Series

S6004 - S6044

Channel D Schematic

Sheet 5 of 7DWG No: Channel D.Sch

R350

R331

R678

330R

2k49

R677

R659

220R

R648

10R/1W

R26

R27

R28

6

1M

MPSA13

1N4148

39k

MMBTA63

MURS160T3

IRFI1310N

Q242

5401

100k

100k

10k

5

U22B

LM393

7

T18D

R335

T14D

D60 1N4148

Q120

+15

+15

D66

R647

100k

Q248

5551

T20D

33k

D258

R667

3k92

D265

12V

R661

10k

R660

R657

R317

15k

R324

1M

D62 1N4148

+15

1N4148

Q114

MPSA13

G1D

100n/100V

C287

R671 100R

G1D

R670

R675100R

Q245

100k

R680

BAS85

Q51 MJW21196

Q52

Q53 MJW21196

Q55

R646

47R

5551

R651

7k5

1N4148

R658

10k

D61

D68 1N4148

LIMD

MJF18004

Q56

1N4148

R679

D270

1N4148

MJE15032

MJW21196

15V

Q238

5551

2k7

-15

Q50

D250

Q235

1n/100V

-15

RMSLim

R355

20k

MMBTA92

Q246

D269

D267

R655

47k

GD

R306

2k7

3

2

84

10u/35V

C151

U22A

LM393

10u/35V

GD

1

47k

T12D

MD

-15

R356

100k

D4C

LEDC

Gadap

-15

PZT2907A

D266

C285

ERRORD

R685

D271

1N4148

M-

Q233

MMBTA92

12k

470p/50V

C275

Q239

R610

75R

T24D

G1D

D268

MURS160T3

R668

15k

C284

5551

Q236

27p/100V

D251

1N4148

22u/16V

C296

C286

5401

100p/100V

D249

1N4148

1N4148

D253

1N4148

R650

10k

+15

GD

5551

R645

Q234

D252

C162

R330

Q116

1k5

LEDD

GD

-15

47k

1N4148

100p/50V

R638

4R7/1W

D259

FFPF30U60S

-V2BD

15V

R276

G1D

D272

C297

22R/1W

33n/100V

1R/1W

100n/100V

D254

R316 82k5

R343

D4B

470p/50V

R631

OUTD

OUTD

12k

4k7

10k

TEMP_IND

TEMP_AIND

RT4 NTC 10k

t

G1D

M+

MMBTA42

C281

R632

75R

C276

R673

C291

OUTD

R329

R323

R342

Q219

47u/16V

620R

15k

R681

R285

C299

5401

R720

475R

IRFI1310N

Q247

12V

47k

47k

C169

11 12

C279

+15

100R

+15U8

J33

TEMPA_D

9 10

1N4148

T9D

D224 FFPF30U60S

+V1BD

1N4148

C

+15

-15

R359

100R

R319

100R

R377

GD

C172

47u/16V

C163

47u/16V

+15U7

-15U7

J27

Adapt In 1

J31

Adapt In 2

123

1

2

TEMP_IND

SIGNAL_IND

OUTD

Gadap

Gadap

VOUT_D

IOUT_D

J22

1 2

3 4

5 6

7 8

-15

G15

+15

10

LIMD

D65

R341

475R

-15

1k5

Q107

5551

R321

1k5

Q218

5551

D230

1N4148

GD

IRFI1310N

5401

D232

12V

T10D

R313

Q108

5551

5401

GD

1k

CLIP_IND

D4D

LEDD

Q47

R634

47R

Q230

5551

R623

10k

R633

3k92

R620

10k

1N4148

D222

1N4148

R606 10k

1n/100V

D225

GsD

3 14

R346475R

38dB

GsD

R3471k5

32dB

S5A

GCD

R353NC

26dB

GsD

R311

390k

LIMD

9

141513

R315100R

100R

R349

Q112

R328

7k5

C166

470p/50V

R612

5551

1N4148

22u/16V

C282

100p/100V

C272

R624

47k

R622

R621

LM13700M

100k

MPSA13

Q222

GsD

T5D

R305

20k

LIMD2

16

GsD

U20B

R314

100R

GD

R312

39k

+15

R300

12k

+15

R363

S7A

SWCD

R370

3k3

R362

GD

47k

R369

Q119

5401

Q121

C269 27p/100V

D226

100k

R629

2k

+V2BD

-15

C150

10u/35V

12

GD

Q113

5401

3k3

5551

Q110

R322

R368

1k5

15k

D239

15V

Q226

D2331N4148 D237

5401

Q224

D231

1N4148

47k

C271

47k

GsD

S7C

SWCD

470p/50V

100n/100V

470p/50V

4k7

+15

C165

22p/50V

+15

1R/1W

R639

C159

T2D

10k

R360

-15U8

R367

C179

116

R640

OUTD

R348

10k

C173

100p/50V

8 4

+15U7

5532

4k7

47k

R332

1k5

R4

R333

47k

100p/50V

C168

GsD

1k5

T4D

C171

100u/16V

1k

+15

R340

15k

T8D

FBKD

C283

D243 FFPF30U60S

+V2BD

5551

Q228

D241

1N4148

D244

15V

10k

T1D

R303

100n/100V

100n/100V

R310

6

C146

C147

20k

2

1

C170

10p/100V

1N4148

5532

R361

IN.D

1

R339

3

1

5

5532

7

10u/50V

10u/50V

R304

T3D

3

U24A

R354

300k

OUTD

IRFI1310N

5401

D240

2

C155

C156

U23B

T7D

2

10k

1k5

84

nc

Q221

3k92

10k

1N4148

D

J32

IND-IND+

R338

R327

C157

-15U7

10k

nc

nc

SWCD

MSD

+15U8

6

47R

C145

C149

SST111

T29D

GsD

15k

7

ERRORD

R614

10k

2 15

15k

5 12

5

5532

T6D

Q118

R334

5551

SWCD

220n/50V

R318

LEDD

GsD

S7E

U24B

Q48

R635

1n/100V

S7B

C153

GsD

SWCD

100p/50V

R616

10k

1N4148

10u/16V

GD

S7D

Q223

100p/50V

R352

3k3

C164

R309

470k

R345

75k

-15

GD

GD

R326

1k5

C158

10u/16V

Q111

5401

D4A

R260

10k

-15

Q97

5551

R254

10k

SIGNAL_IND

+15

413

BRIDGEC

C161

+V3BD

R626

15k

D223

15V

D2271N4148 D235

5401

1N4148

C274

Q225

5551

C277

27p/100V

1N4148

D236

C27022u/16V

7654321

R613

2k

Q220

D228

100p/100V

C273

R627

47k

100k

R637

+V3BD

100k

R636

8

U23A

R366

C175

R609

R625

D234

B

-15

R320

100R

12V

123

Gadap

GD

47u/16V

C160

47u/16V

-15U8

J26

Adapt In 3

123

CLIP_IND

TEMP_AIND

IOUT-D

Gadap

T27D

CLIP_D

SIGNAL_D TEMP_D

Adapt Out

13 14

15 16

2n2/100V

C278

R617

2k

C280

R641

R643

R618

R615

R25

R23

R24

T27D

D248

C290

100n/100V

100n/100V

R652

1R/1W

R630

1R/1W

-V1BD

R611 100k

OUTD

D261

+15 +15

Adapt In 4

T11D

1N4148

D229

NTC Sense

+15 +15

R687

3k01

R682

12k

RV3

500R

Q229

R642

MJW21195

MJW21195

R676

22u/16V

1N4148

R654

100k

5401

33k

5551

1N4148

C288

100p/100V

D260

R607

Q231

R644

BAS85

MURS160T3

Q237

D257

1N4148

5401

R628

39k

10u/35V

T21D

MMBTA13

Q232

330R

2k49

D247

220R

10R/1W

0R33/4W

0R33/4W

IOUT-D

0R33/4W

D242

FFPF30U60S

C294

27p/100V

C295

Q240

5401

D255

D262

1N4148

PZT2222A

3k92

R686

20k

G1D

+15

C268

100n/100V

R619

100R

G1D

MJF18004

Q49

Q227

MURS160T3

D245

D246

1N4148

100k

D238

1N4148

Q46

MJE15033

Q43

Q44 MJW21195

Q45

Q54

15k

D264

15V

R665

47R

Q244

5551

R656

7k5

D256

1N4148

R666

Q241

5551

D263

R649

10k

R672

47k

R664

10k

10k

C289

1n/100V

R663

R662

A

B

C

D

A

47k

10k

T34

G

100k

-V1AC

R712

33u/16V

R716

R537

1N4148

10k

5401

5551

D170

1M

Q251

R529

Q181

1N4148

5401

R709

C305

15AC

47k

1N4148

Q253

D173

T32

G

G

R713

47k

D283

1N4148

R528

5551

1N4148D282

+V1BD

G

1k

Q180

D176

1N4148

G

+RM

R536

+V1AC

D275

D169

1N4148

T15

M+M-

1 2 3 4 5 6 78

D284

5V1

+15

R704

220k

T33

G

D5D

STBY+ON

R700

3k92

-RM

R703

47K

R530

1k

Q186

5401

T38

1N4148

G

D172

G

R526

47k

Q187

5401

-V1BD

D178

1N4148

B

-15

100u/35V LowZ

24V PDM FAN1

24V PDM FAN2

100u/35V LowZ

R708

10k

D278

5V1

D281

MURS160T3

C15

J39

1

2

J38

1

2

220uH

C16

GND6FBK

5

ON/OF

LM2675M-ADJ

T31

L2

L3

10uH

C

J4

A XLR F

4

NTC Sense

T30

G

Q249

+15

IN

OUT

5401

6V2

5551

7

4
2

NC

3

NC

1

CB

U26

8

C310

10n/50V

Q252

D285

10k

10k

237R

-15

R699

R714

R706

5551

1k

Q250

R698

R690 100k

R702 4k42

R707 36k5

C303 1n/100V

+15

TEMP_A

CLIP_B

VOUT_B

TEMPA_B

SIGNAL_B

TEMP_B

SIGNAL_C

TEMP_D

3
2
1

J3

B XLR F

4
3
2
1

J2

C XLR F

4
3
2
1

J1

D XLR F

4
3
2
1

J6

FASTON

2
1

J25

FASTON

2
1

VOUT_C

VOUT_D

IOUT_D TEMPA_D

TEMP_C CLIP_D

VRAIL_A

D

S3

PARAL

J5

CON8

8
7

S2

PARAL

S1

PARAL

-15

GsA

G15 +15

INB+

G5

G5

IND+

6
5
4
3
2
1

GsC

INC-

REPL. BY

Sheet 6 of 7DWG No: Comun.Sch

-RM

G G1A G1B G1C G1D GsA GsB GsC GsD GA GB GC GD GADAP G15

DRAWN

DESIGN

REPLACE

RAM Audio - S Series

S6004 - S6044

Inputs, protections & fans

G5

+RM

J23

J29

EtheRAM Signals

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

OUTA

G

100k

100u/10V

D276

84

C306

10u/35V

R694

C301

+15

G

OUTC

R695

100k

C298

100u/10V

R705

10k

LM393

R376 33k

U25B

D279 1N4148

6

T37

1k5

R375 33k

1N4148

T36

C309

1n/100V

7

R696

DCS

SIGNAL_A

CLIP_A

-15

10u/100V

C10

10u/100V

C9

10u/100V

C11

10u/100V

C12

C13

10u/100V

C14

10u/100V

VOUT_A

CLIP_C

C312

-

470n/50V

C311

Cinta

JST

IOUT_A

1k

SIGNAL_D

RMSLim

R715

4

+V2BD

-V1BD

8

T13

+V3BD

DCS

TEMPA_C

IOUT_C

123

-V2BD

-V3BD

+15

J37

+V1BD

15AC

G5

Cinta

OUTD

OUTB

J36

1234567

TEMPA_A

IOUT_B

LSTBY

G +15

R711

10k

R710

20k

D277

R697

150k

470n/50V

C302

5

+V3AC -V3AC

+V2AC +V1AC -V2AC-V1AC

STBY+ON

10u/100V

C3

10u/100V

C4

10u/100V

C5

10u/100V

C7

10u/100V

C6

C8

10u/100V

D5A

330R

G

+V3BD -V3BD

+V2BD +V1BD -V2BD-V1BD

R701

OUTD

OUTB

G

100k

G

100u/10V

R693

C307

100k

100u/10V

C308

10u/35V

-15

G

R692

C304

R674 33k

D280 1N4148

LM393

R66933k

1N4148

-15

2

U25A

G

G

+15

3

1

11 12

13 14

15 16

17 18

19 20

+5

+5

GsB

FBKB

FBKC

FBKD

+15

-15

+5

+V2AC

+V3AC

OUTA

OUTC

JST

8

7 8

9 10

INA+INA-

INB-

FBKA

123456789

+V1AC

-V2AC

5 6

GsD

J34

-V3AC

1 2

3 4

INC+

IND-

-V1AC

1234567

EtheRAM IN

7654321

J35

8

A

B

C

D

A

1 2 3 4 5 6 78

B

C

D

REPL. BY

REPLACE

DESIGN

Channel B Channel B.Sch

VOUT_B

IOUT_B

TEMPA_B

INB+

INB-

VINPOS_B

VINSW_B

TEMP_B

CLIP_B

DRAWN

FBKB OUTBM+M-

NTC SenseBRIDGEA

RMSLIM

INA-

INA+

VINPOS_A

VOUT_A

IOUT_A

TEMPA_A

VRAIL_A

NTC SenseBRIDGEA

VINSW_A

TEMP_A

CLIP_A

Channel A Channel A.Sch

M+

TEMPA_A

VOUT_B

IOUT_B

TEMPA_B

IOUT_A

INA+

INA-

INB+

INB-

FBKA OUTAM+M-

VRAIL_A

RMSLIM

Control_S Control_S.Sch

VINPOS_B

VOUT_A

VINPOS_A

VINSW_A

VINSW_B

TEMP_A

TEMP_B

CLIP_A

CLIP_B

M-

NTC Sense

RMSLIM

Comun Comun.Sch

FBKA

FBKB

OUTA

OUTB

Sheet 1 of 5DWG No.

RAM Audio - S Series

S6000

Signals Block Diagram

A

7654321

8

B

C

D

A

+15

-15

R28 3k3

GA

C22

D12 1N4148

R32

C45

470n/50V

GA

M+

R38

47k

Q46

5551

R94

39k

MSA

2n2/100V

100n/100V

4k7

-15

100u/16V

MA

T15

D13 1N4148

47k

R69

10k

Q51

5401

T16A

1N4148

D20

LIMA

Q89

5551

C99

R226

2k

C96

10u/35V

MMBTA63

R10 0R33/4W

R11 0R33/4W

R12 0R33/4W

R13 0R33/4W Q18

R14 0R33/4W Q19

T28A

R48

C25

LIMA2

100k

T22A

1 2 3 4 5 6 78

GA

20k

GA

R82

3k92

-15

GA

R77

1M

R55

Q87

330R

2k49

220R

10R/1W

0R33/4W

6

MPSA13

1N4148

R210

R209

R223

R229

R9

R47

2k

5

LM393

7

T18A

R59

T14A

D14 1N4148

Q53

+15

+15

D18

R225

39k

100k

D66

U2B

R230

5551

T20A

33k

1M

+15

Q49

MPSA13

G1A

R214100R

MJF18004

Q86

R207

Q11

Q12

Q13

Q17

MURS160T3

R54

D15 1N4148

1N4148

100n/100V

C98

G1A

Q14

BAS85

D16

D19 1N4148

LIMA

100R

1N4148

R208

100k

D56

MJW21196

MJW21196

MJW21196

MJW21196

MJW21196

MJW21196

2k7

R213

1N4148

MJE15032

-15

RMSLim

R89

-15

MMBTA92

Q15

GA

R31

3k3

3

2

84

10u/35V

C21

10u/35V

U2A

LM393

GA

1

47k

T12A

MA

-15

R83

100k

D1C

LEDC

Gadap

-15

R166

20k

D30

1N4148

M-

Q94

MMBTA92

Q84

470p/50V

C88

Q85

PZT2907A

R202

75R

T24A

G1A

D63

MURS160T3

D57

D64

+15

GA

Q50

5551

-15

ERRORA

R218

12k

R53

LEDA

C33

GA

4R7/1W

1k5

47k

1N4148

100p/50V

R191

R46 82k5

R68

D1B

R137

G1A

D31

C83

22R/1W

33n/100V

470p/50V

R194

OUTA

OUTA

R52

10k

R51

4k7

R67

10k

TEMP_INA

TEMP_AINA

RT1 NTC 10k

t

G1A

620R

M+

Q81

MMBTA42

C84

R187

75R

C89

15k

47u/16V

R169

B

123

Adapt Out

5401

10u/35V

MMBTA13

-15

100R

47u/16V

-15U2

CLIP_INA

TEMP_AINA

CLIP_A

13 14

15 16

TEMP_A

Q78

C91

Q77

R185

330R

R183

2k49

220R

R201

R203

10R/1W

0R33/4W

R27

C18

VinposA

VINPOS_A

11 12

2n2/100V

R60R33/4W

R7

R8

R5

R3

+15

R75

100R

GA

C31

47u/16V

+15U2

J20

J18

Adapt In 2

1

2

OUTA

VinswA

VRAIL_A

VOUT_A

IOUT_A

TEMPA_A

VINSW_A

J7

1 2

3 4

5 6

7 8

9 10

+15

-15

G15

C92

R200

2k

IOUT+AIOUT-A

T27A

+15

-15

R91

100R

R88

+15

+15

R138

C77

R167

12k

R355 475R

PZT2222A

Q74

100R

GB

C42

47u/16V

C48

47u/16V

+15OTA1

-15OTA1

J13

Adapt In 4

Adapt In 3

123

IOUT+A

IOUT-A

+V2A

T11A

1N4148

D49

NTC Sense

+15

R164

3k01

500R

RV1

+15

R165

20k

R195

G1A

+15

C93

100n/100V

R196

100R

G1A

MJF18004

Q5

MURS160T3

D45

1N4148

1N4148

Q10

MJE15033

39k

R206

100k

T21A

T19A

D42

Q76

5401

R182

100k

R181

33k

MJW21195

MJW21195

MJW21195

MJW21195

MJW21195

MJW21195

D53

BAS85

D41

0R33/4W

0R33/4W

R4

0R33/4W

0R33/4W

MURS160T3

D50

Q6

Q7

Q8

Q1

Q2

Q3

C

+15

-15

R90

100R

R40

100R

47u/16V

-15U1

Adapt In 1

C34

123

GA

C43

47u/16V

+15U1

J14

TEMP_INA

Gadap

Gadap

-15OTA1+15OTA1

R58

475R

1k5

Q41

5551

T10A

R35

Q42

5551

5401

GA

D1D

LEDA

1k

CLIP_INA

1N4148

T9A

R43

LIMA

D17

-15

1k5

GA

GsA

8 9

38dB

GsA

32dB

S2B

GAB

26dB

R64

390k

R86

C32

10u/35V

5551

5

8

324

R66100R

100R

R76

3k3

Q48

R45

7k5

C38

470p/50V

LM13700M

100k

MPSA13

LIMA

T5A

R85

20k

1

GsA

116

U4A

R65

100R

R74

39k

+15

R81

3k3

R80

GA

47k

R87

Q52

5401

Q54

-15

7

GA

Q45

5401

Q44

R37

680R

LIMA2

GA

+15

R92

GsA

S3H

SWAB

R71 475R

R72 1k5

R78 NC

GsA

GsA

470p/50V

R79

12k

S3F

SWAB

+15

470p/50V

C30

T2A

R63

4k7

C39

C36

22p/50V

+15

47k

10k

GsA

-15U2

1k5

+15

611

T8A

R73

10k

C44

100p/50V

8 4

+15U1

4k7

R41

R56

1k5

R1

R34

47k

47p/50V

R62

T4A

C37

100u/16V

1k

R44

15k

FBKA

IN.A

2

INA- INA+

R61

10k

3

U3A

5532

1

T1A

R29

100n/100V

100n/100V

5

6

5532

7

10u/50V

C17

10u/50V

C16

R30

20k

C35

T3A

3

2

U1A

5532

1

NC

R57

C24

R42

10p/100V

300k

OUTA

1

10k

2

C26

C27

U3B

VinswA

VinposA

SST111

84

BRIDGEA

T7A

D

J11

R60

R50

C28

-15U1

10k

100p/50V

7 10

R84

3k3

S3G

SWAB

C41

10u/16V

C23

220n/50V

R39

15k

C15

NC

LEDA

NC

C19

MSA

GsA

Q43

+15U2

C40

GsA

R36

15k

100p/50V

5

6

U1B

5532

7

T6A

ERRORA

R33

470k

R70

75k

-15

GA

GA

R49

1k5

C29

10u/16V

Q47

5401

D1A

GA

C20

-V3A

IRFI1310N

Q88

5401

DRAWN

DESIGN

REPLACE

REPL. BY

3k92

RAM Audio - S Series

S6000

Channel A Schematic

Sheet 2 of 5DWG No: Channel A.Sch

D59

12V

10k

100k

100k

A

R186 1R/1W

100n/100V

100n/100V

C97

5551

Q90

D65

1N4148

C102

100p/100V

D62

1N4148

D5

FFPF30U60S

C100

27p/100V

-V2A

C95

Q93

5401

D68

D61

1N4148

D60

15V

R215

15k

Q16

D58

15V

R216

47R

Q91

5551

1N4148

22u/16V

D67

5551

Q92

R224

47k

1N4148

R228

10k

C101

1n/100V

R227

7k5

R211

R219

10k

R220

R221

R222

IRFI1310N

R212

1R/1W

R217

NC

OUTA

R233

47R

Q95

5401

7k5

R232

3k92

D72

12V

10k

R237

10k

47k

R236

47k

R238

B

15k

Q20

D71

15V

Q97

5551

R241

D74

1N4148

Q98

5551

R243

R240

47k

10k

C105

1n/100V

R234

22u/16V

1N4148

R242

5551

Q96

1N4148

C107

100p/100V

D69

D73

1N4148

D6

FFPF30U60S

1R/1W

C106

27p/100V

-V1A

C104

R235

NC

Q99

5401

D76

D70

1N4148

D75

12V

D4

C103

FFPF30U60S

R231

100n/100V

C87

+V1A

R192 100k

Q82

5551

D47

1N4148

1N4148

OUTA

IRFI1310N

Q83

5401

D48

D43

12V

3k92

10k

1N4148

Q9

R184

15k

D52

15V

R199

47R

Q80

5551

D51 1N4148 D55

R198

10k

R205

5401

R204

1N4148

D54

R193 10k

C90

1n/100V

C

1N4148

C85 27p/100V

Q75

5551

D44

1N4148

22u/16V

C94

R197

2k

Q79

D46

100p/100V

C86

R190

47k

47k

R189

47k

+V2A

R188

100k

100n/100V

1R/1W

R178

OUTA

D3 FFPF30U60S

C79

R168

+V2A

5551

Q72

D38

1N4148

1N4148

D40

15V

IRFI1310N

5401

D39

Q69

3k92

10k

1N4148

Q4

15k

D34

15V

R171

47R

Q71

5551

R172

D32 1N4148 D36

10k

R170

5401

R174

D35

Q70

D33

100p/100V

1N4148

1N4148

R177

10k

C81

1n/100V

R180

R179

D

+V3A

R175

Q73

5551

C82

27p/100V

1N4148

D37

C7822u/16V

R173

2k

C80

R176

47k

100k

+V3A

100k

7654321

8

A

D117

D115

GB

20k

Q128

MJE15032

-15

PZT2907A

Q34

C52

10u/35V

R328

Q125

GB

R98

3k3

3

2

84

10u/35V

U5A

LM393

1

47k

T12B

MB

-15

R151

100k

D2C

LEDC

Gadap

D129

1N4148

M-

Q119

MMBTA92

470p/50V

C116

R263

75R

T24B

G1B

D116

MURS160T3

+15

GB

Q63

5551

LEDB

-15

ERRORB

R288

12k

R127

10k

R113

C64

82k5

R119

4k7

R120

R134

10k

R135

1k5

TEMP_INB

D2B

GB

TEMP_AINB

R143

47k

15k

RT2 NTC 10k

G1B

t

G1B

47u/16V

R325

620R

D128

1N4148

M+

Q109

MMBTA42

100p/50V

C132

470p/50V

C121

R276

75R

R277

4R7/1W

R273

22R/1W

33n/100V

C117

OUTB

OUTB

-15

+15

R93

GB

C53

D21 1N4148

R99

C75

470n/50V

100n/100V

GB

R121

4k7

-15

C55

100u/16V

MB

M+

D22 1N4148

47k

R104

47k

LIMB2

Q58

5551

100k

R136

10k

Q65

5401

T16B

1N4148

R163

D29

39k

LIMB

MSB

2n2/100V

Q126

5551

C129

R296

2k

C130

10u/35V

T22B

0R33/4W

0R33/4W

0R33/4W

0R33/4W

0R33/4W

T28B

1 2 3 4 5 6 78

GB

20k

GB

R150

3k92

-15

GB

3k3

5

6

LM393

7

T18B

R128

1M

T14B

D23 1N4148

Q67

MPSA13

R142

+15

+15

R123

D27

1N4148

R295

39k

Q129

MMBTA63

R309

330R

R308

2k49

R299

220R

R289

10R/1W

R22

R230R33/4W

R21

R24

R25

R26

D126 MURS160T3

R114

2k

-15

R122

1M

U5B

RMSLim

D24 1N4148

+15

1N4148

D25

Q61

MPSA13

R149

2k7

D28 1N4148

LIMB

G1B

-15

100n/100V

C124

R304 100R

MMBTA92

G1B

R305

150k

R306

MJF18004

100R

Q36

1N4148

Q127

5551

R310

100k

T20B

R311

33k

D118

1N4148

BAS85

MJW21196

Q31

MJW21196

Q32

MJW21196

Q33

MJW21196

Q37

MJW21196

Q38

MJW21196

Q39

B

-15

100R

R106

39k

123

Gadap

R272

0R33/4W

IOUT-B

0R33/4W

0R33/4W

D96MURS160T3

100R

GB

C69

47u/16V

C60

47u/16V

-15U4

J15

J21

Adapt In 3

Adapt In 2

123

VinposB

CLIP_INB

TEMP_AINB

IOUT+B

IOUT-B

IOUT_B

TEMPA_B

CLIP_B

VINSW_B

VINPOS_B

Adapt Out

5 6

7 8

9 10

11 12

13 14

15 16

TEMP_B

G15

Q114

5401

2n2/100V

C118

R267

2k

10u/35V

C120

T21C

MMBTA13

Q118

R283

330R

R284

2k49

D106

220R

R268

R265

10R/1W

R18

IOUT+B

R190R33/4W

R20

R15

R160R33/4W

R170R33/4W

T27B

+15

+15

Adapt In 4

T11B

R129

1N4148

D94

NTC Sense

+15

R330

3k01

C140

R326

12k

500R

RV2

R354 475R

+15

R329

20k

G1B

+15

C113

100n/100V

R266

100R

G1B

R262

150k

MJF18004

Q30

Q112

PZT2222A

MURS160T3

D103

1N4148

1N4148

MJE15033

T19B

D105

Q117

5401

R285

100k

R287

33k

BAS85

D97

Q25

Q26

MJW21195

Q27

MJW21195

Q28

MJW21195

Q21

MJW21195

Q22

MJW21195

Q23

MJW21195

C

J19

J8

1N4148

T9B

+15

-15

R156

100R

R116

100R

GB

C72

47u/16V

C62

47u/16V

+15U3

-15U3

GsB

J16

Adapt In 1

123

TEMP_INB

Gadap

Gadap

10

LIMB

D26

-15

1k5

R111

R103

1k5

GB

GB

R133

475R

5401

Q55

5551

T10B

Q56

5551

Q57

5401

GB

R112

1k

CLIP_INB

D2D

LEDB

3 14

SWAB

R145475R

38dB

GsB

R1401k5

32dB

S2A

GAB

R139NC

26dB

GsB

R107

390k

LIMB

9

141513

R109100R

100R

R147

3k3

Q62

R118

7k5

C66

470p/50V

LM13700M

100k

GsB

T5B

R96

20k

LIMB2

16

GsB

U4B

R110

100R

GB

R108

39k

+15

R97

12k

+15

R148

SWAB

R160

3k3

R155

GB

47k

R159

Q66

5401

Q68

MPSA13

-15

C51

10u/35V

12

Q60

5551

R158

680R

GsB

S3C

470p/50V

4k7

470p/50V

S3A

+15

C65

22p/50V

+15

C59

T2B

10k

47k

R153

-15U4

C76

1k5

116

10k

R141

10k

C73

100p/50V

8 4

+15U3

5532

R95

4k7

R101

47k

R124

1k5

C49

R2

10u/50V

C47

R125

20k

C68

47p/50V

GsB

2

R157

T4B

C71

100u/16V

1k

+15

R132

C70

15k

10p/100V

T8B

FBKB

T1B

100n/100V

100n/100V

6

1

+15

R162

+15U4

1

2

OUTB

VinswB

VOUT_B

1 2

3 4

+15

-15

D

J17

IN.B

1

2

INB-INB+

R131

R130

10k

3

2

R117

C58

-15U3

10k

NC

NC

MSB

+15U4

6

C46

C50

VinposB

T29

GsB

15k

7

ERRORB

2 15

5

T6B

15k

5532

SWAB

220n/50V

R105

LEDB

R126

U7B

S3B

10u/16V

C54

GsB

SWAB

100p/50V

100p/50V

R152

3k3

C67

R100

470k

R144

75k

-15

GB

GB

R115

1k5

C63

10u/16V

Q59

5401

D2A

GB

GsB

512

S3E

SWAB

413

BRIDGEA

S3D

C61

U6A

1

C56

C57

5

U6B

5532

7

VinswB

10u/50V

R102

SST111

Q64

T3B

R161

1k5

3

84

U7A

5532

C74

NC

R154

R146

300k

T7B

OUTB

-V3B

IRFI1310N

Q120

5401

DRAWN

DESIGN

REPLACE

REPL. BY

3k92

RAM Audio - S Series

S6000

Channel B Schematic

12V

Sheet 3 of 5DWG No: Channel B.Sch

R293

R298

A

R286 1R/1W

100n/100V

R318

22u/16V

1N4148

R320

5551

Q131

1N4148

C135

100p/100V

D124

D122

1N4148

D10

FFPF30U60S

1R/1W

C136

27p/100V

-V1B

C134

R316

NC

Q133

5401

D119

D125

1N4148

D127

12V

1N4148

100n/100V

D9

C128

FFPF30U60S

C131

27p/100V

-V2B

C127

Q121

5401

D107

D114

1N4148

D112

15V

IRFI1310N

R307

1R/1W

R290

NC

OUTB

R313

47R

Q130

5401

7k5

R312

3k92

D123

12V

10k

R317

10k

47k

R315

47k

R314

B

15k

Q40

D121

15V

Q134

5551

R319

D120

1N4148

Q132

5551

R323

R322

47k

10k

C133

1n/100V

Q35

R300

15k

D108

15V

R292

47R

Q124

5551

R297

7k5

1N4148

R291

D111

R303

10k

R294

10k

100k

100k

5551

Q122

D109

1N4148

22u/16V

D110

5551

Q123

C125

100p/100V

R301

47k

D113

1N4148

R302

10k

C126

1n/100V

D8

C137

FFPF30U60S

R324

100n/100V

C123

+V1B

R274 100k

Q115

5551

D98

1N4148

1N4148

OUTB

IRFI1310N

Q116

5401

D99

D92

12V

3k92

10k

1N4148

Q29

R264

15k

D101

15V

R280

47R

Q113

5551

D1001N4148 D104

R279

10k

R282

5401

R281

1N4148

D102

R275 10k

C119

1n/100V

C

1N4148

C114 27p/100V

Q110

5551

D93

1N4148

22u/16V

C122

R278

2k

Q111

D95

100p/100V

C115

R271

47k

47k

R270

47k

+V2B

R269

100k

100n/100V

1R/1W

R259

OUTB

D7

C112

FFPF30U60S

R257

+V2B

5551

Q107

D89

1N4148

1N4148

D91

15V

IRFI1310N

5401

D90

Q105

3k92

10k

1N4148

Q24

15k

D83

15V

R251

47R

Q106

5551

R253

D84 1N4148 D87

10k

R250

5401

R254

D86

Q104

D82

100p/100V

1N4148

1N4148

R258

10k

C110

1n/100V

R261

R260

D

+V3B

R255

Q108

5551

C111

27p/100V

1N4148

D88

C10822u/16V

R252

2k

C109

R256

47k

100k

+V3B

100k

7654321

8

A

1 2 3 4 5 6 78

1N4148

5401

5551

1M

Q137

R247 10k

Q101

5401

R346

C143

15AC

T32

Q139

G

G

G

R351

47k

+RM

D136

1N4148

R249

1k

R245

47k

Q100

5551

T35

D138

5V1

+15

G

D11D

STBY+ON

R337

3k92

-RM

R248

1k

R244

47k

Q102

5401

220k

47k

5401

R350

47k

R341

T33

10u/16V

T34

R340

R353 10k

G

G

Q103

D137

T30

10k

10k

237R

C

C141 1n/100V

J4

R327 100k

R335

1k

R349

R343

R339 4k42

Q136

5551

R336

-15

R344 36k5

A XLR F

4
3
2

A XLR M

B XLR F

B XLR M

FASTON

FASTON

1

J3

4
3
2
1

J2

4
3
2
1

J1

4
3
2
1

J6

2
1

J12

2
1

+15

D

J5

CON8

S1

PARAL

4
3
2
1

B

NTC Sense

G

Q135

5401

6V2

5

+15

L1

220uH

C14

IN

GND6FBK

OUT

ON/OF

L2

10uH

Q138

5551

7

4
2

NC

3

NC

1

CB

U9

8

C147

10n/50V

-15

100u/35V LowZ

R345

10k

D132

5V1

LM2675M-ADJ

D134

MURS160T3

REPL. BY

Sheet 4 of 5DWG No: Comun.Sch

T38

M-

D80

1N4148

G

-V1B

D85

1N4148

-RM

DRAWN

DESIGN

REPLACE

RAM Audio - S Series

S6000

Inputs, protections & fans

-V1A

D79

1N4148

100k

R246

D81

1N4148

G G1A G1B G1C G1D Gs A GsB GsC GsD GA GB GC GD GADAP G15

G5

+V1B

+V1A

+RM

D77

1N4148D135

1N4148

G

D78

1N4148

D130

C145

10u/35V

100u/35V LowZ

M+

-15

G

24V PDM FAN1

LM393

U8A

C13

T31

J27

1

2

24V PDM FAN2

J26

1

2

OUTA

OUTB

G

R331

100k

G

C142

100u/10V

G

+15

-15

3

2

+15

84

C144

10u/35V

G

1

R332

100k

C138

100u/10V

R342

10k

LM393

R321 33k

U8B

D133 1N4148

1n/100V

6

T37

1k5

R239 33k

1N4148

T36

C146

7

R333

DCS

G +15

R348

10k

D11A

STBY+ON

R347

20k

D131

R334

150k

470n/50V

C139

5

10u/100V

+V3B -V3B

10u/100V

C7

+V2B +V1B -V2B-V1B

C8

10u/100V

C9

10u/100V

C12

C11

10u/100V

C10

10u/100V

IOUT_B

TEMP_B

Gadap

Gadap

Gadap

17 18

19 20

21 22

23 24

25 26

VINPOS_B

TEMPA_B

CLIP_B

Gadap

Gadap

LSTBY

R338

330R

-15

G

470n/50V

C148

JST

VOUT_A

IOUT_A

CLIP_A

VOUT_B

15 16

VINSW_B

-

C149

Cinta

-V1B

8

VINSW_A

Gadap

Gadap

J9

EtheRAM Signals

1 2

3 4

5 6

7 8

9 10

11 12

13 14

VINPOS_A

TEMPA_A

TEMP_A

RMSLim

4

+V2B

Gadap

T13

R352

+V3B

-V2B

DCS

123

-V3B

+15

J25

+V1B

VRAIL_A

15AC

Cinta

OUTB

OUTB

J24

1234567

VRAIL_A

1k

-15

GsA

GsA

G15 +15

INB+

G5

G5

J10

EtheRAM IN

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

17 18

19 20

INA+INA-

INB-

+5

+5

GsB

GsB

10u/100V

+V3A -V3A

C1

10u/100V

+V2A +V1A -V2A-V1A

C2

10u/100V

C3

10u/100V

FBKA

FBKB

+15

-15

G5

+5

J22

123456789

OUTA

OUTA

+V2A

+V1A

+V3A

-V2A

-V1A

-V3A

JST

8

J23

1234567

C6

10u/100V

C4

C5

10u/100V

7654321

8

A

B

C

D

A

B

C

D

10u/16V

C21

Vm

Gp

1 2 3 4 5 6 78

+

Gp

Vm

Gp

5551

1N4148

R115

Gp Gp

REPL. BY

7V5

LF353

R106 2k

Q70

D19

470k

220k

REPLACE

D6

2

10u/16V

+C75

R52

DESIGN

3

1

+

C33

10u/16V

Gp

47k

5551

U2A

SD

R141

Q73

47u/16V

5401

DRAWN

+15p

R35

1k

10u/16V

+C18

10k

84

D18

1N4148

R38

R92

100p/50V

+15p

R33

R29 NC

+15p

TR

5401 R81

10k

C17

4k7

C34

Vm Vc

R34

12k

Q68

22p/50V

LIMIT

84

R36

100R

R62

100k

3

2

U3A

LM393

1

R79

100R

C22

+

NC

D8

BAS85

Q62

1k5

R53 470k

R78

LF353

10u/16V

+C37

10k

1n/100V

R37

33k

Vc1

R77

C20

LM393

1N4148

3k3

1k

Vc2

6

7

Vc

D36

R181

C65

22p/50V

R107

R51 470k

5

U2B

Gp

100k

5

6

U3B

7

TR1

+15p

Vc

Gp

4k7

C49

100p/50V

10u/16V

R105

Gp

47u/16V

R45

1M

R134

1M

390k

84

R139

1k5

C63

10u/16V

100n/100V

C58

HI2

R167

IR2110S

C2

R90

1N4148

1

4

LO

NC

HO8NC

VDD
VCC

HIN

LIN

SD

12

14

13

Gp

LO2

Vs

VS2

MURS160T3

+V

10

COM

6

NC16NC

VSS
Vb

D10

TR1

D21

10R

9

NC

7

5

C84

220n/50V

+15p

U10

R122

GpGp

Gp

2
15

1N4148

MURS160T3

Vac

100n/100V

D27

VS2

Gp

MURS160T3

C79

1

555

+
C80

10u/16V

SD

D22

D25

CVolt

GND
THR

TLP3062

COM2

5

6

Tb

+15p

+15p

TR

2

TRIG

VCC

DIS

7

U1

Ta

1N4148

COM1

100n/100V

100n/100V

Gp

+5p

R197

100R

D42

C97

11

C102

4

R

Q

3

75R

75R

10R

3

Gp

8

U11

R41

R54

HI1

R214

HO8NC

VDD
VCC

HIN

IR2110S

100n/100V

C101

1n/100V

LO

LIN

12

C105

100n/100V

R148

150k

R140

1k5

LO1

1N4148

1

4

NC

SD

Vs

14

13

Gp

VS1

Gp

C68

D41

10

NC16NC

COM

VSS
Vb

6

7

220n/50V

+15p

R206

10R

VS1

MURS160T3

9

NC

5

C106

D28

COM1

2

Gp

15

U13

+15p

D40

MURS160T3

Gp

100n/400V

R30

U9B

10M

1M

1M

470k

+5p

R152

1k5

D30

R132

R39

R40

Gp

Gp

TR1

+V

R133

470k

100n/100V

C41

LM393

+15p

3k01

2

1

1N4148

COM2

100n/100V

100n/100V

Gp

+5p

R138

3

U9A

Gp

D33

10R

C69

11

3

C76

R76

20k

R80

R147

2k

1N4148

Vm

GpGpGp

Gp

+C32

+15p

100n/400V

D14

MURS160T3

3
7
8

100n/100V

L1

3m32

+
C60

+15p

Gp

C1

S2D
S
S
S

47u/16V

C23

C59

100n/100V

LM393

M

NC

C

U4

TOP242G

+
C50

D34

LED

R114

15k

R91

1k

5

6

7

5
1
6
4

D11

9V1

R63

22R

D12

MURS160T3

R165

680R

Sheet 7 of 7DWG No: Control S.Sch

COM2

LO2

RAM Audio - S Series

S6000 - S6004 - S6044

Power Supply Control Schematic

HEADER 15X2

27 28

29 30

COM1

Gp

A

LIMIT

TR1

HI2

Vs2

13 14

15 16

17 18

19 20

21 22

23 24

25 26

Vc1

Vc2

Vs1

LO1

HI1

100n/100V

C82

+15p

16

VCC

11

CIN

9

COUT

10

COUT

12

RST

GND

4060

8

Gp

Q10
Q12
Q13
Q14

Q4
Q5
Q6
Q7
Q8
Q9

U14

470p/50V

7
5
4
6
14
13
15
1
2
3

2k

1k

1N4148

D32

Gp

C

R219

10M

Gp

R213

Gp

Vac

+V

Tb

C96

47p/50V

JP1

1 2

3 4

5 6

7 8

9 10

11 12

Y1

4 MHz

GpGp

Ta

Vac

+V

47p/50V

C100

1k

B

R182

R166

SG3525AP

OSC OUT4OUTA11OUTB14VREF16DISC7COMPN9CT

+15p

C83

VC13GND

IN-

1

Gp

Gp

5V1

OSC SYNC

IN+

2

+5p

D31

5

U16

12

SOFTSTART

VIN+

SD

RT

R187 10k

8

15

3

10

+15p

6

R153

2k

D35 1N4148

7k5

R198

SD

D

+

1u/16V

Gp

C88

7654321

8

REPL. BY

Power Supply Control Schematic

DWG No: Supply_S6k.Sch

Sheet 6 of 6

REPLACE

DESIGN

RAM Audio - S Series

S6000 - S6004 - S6044

DRAWN

A

A

1 2 3 4 5 6 78

B

C

J1

CON2

1

2

123

G

J4

R XLR F

123

4

D

123

G

J3

L XLR F

123

4

LPL

LPR

C130RC45

0R

R80

R79

10K

10K

GsC

R81

NM

12

13

R82

U4D

MC33079

0R

14

C30

10u

LIMLP

R76

R77

10K

10K

Q8

J113

GsC

J113

GsC

G15

+15-1C

4 11

MC33079

G15

MC33079

K

1A2

1A2

G15

D2

1N4148

D1

1N4148

R47

1K

R37

C15

47u

100K

10

9

Q7

R78

10K

3

2

U4A

1

D8

1N4148

R49

100K

5

6

U4B

7

R46

10K

K

Q3

MPSA92

AlZ

10u

R41

82K5

U4C

MC33079

R75

10K

8

C23

10u

R42

10K

R64

47R5

OUTLP+

OUTLP-

-15-1C

R61

100K

D7

1N4148

R63

100K

R59

200K

R62

A

R60

B

R58

10K

G15

R48

100R

LIMLP

C12

JP4A

CON9_/3

3
2
1

LIMHPR

Q6

J113

GsB

Q9

J113

R88

10K

GsB

G15

3

4 11

+15-3B

U5A

MC33079

1

1N4148

100K

G15

5

U5B

MC33079

JP1C

CON9_/3

7
8
9

1A2

D11

1N4148

7

10K

K

K

1A2

D10

1N4148

Q5

MPSA92

R67

1K

AlZ

R68

C26

47u

100K

1u

R83

82K5

HPR

C33

0R

R89

4K99

GsB

R100

10K2

R91

4K42

9

8

10u

R92

R87

10K

10K

12

13

MC33079

14

10u

R86

10K

OUTHPR+

R85

47R5

OUTHPR-

2

D9

1N4148

-15-3B

R73

100K

D12

R74

R71

200K

6

R70

A

R106

B

R115

10K

R69

G15

R84

100R

LIMHPR

C31

10

MC33079

U5D

C25

JP1A

CON9_/3

3
2
1

U5C

C32

LIMHPL

E

Q2

J113

GsA

J113

Q1

R90

10K

R72

100K

1A2

D3

1N4148

47u

R40

10K

GsA

G15

12

U3D

MC33079

14

1N4148

100K

G15

10

U3C

MC33079

JP4B

CON9_/3

8
4
5
6

10K

K

K

1A2

D5

1N4148

Q4

MPSA92

R56

1K

AlZ

R50

C22

100K

R44

82K5

GsA

CB

+15-3A

4 11

MC33079

R36

10K

R35

47R5

13

D4

R55

9

R57

R43

100R

LIMHPL

C17

1u

HPL

C16

0R

R14

R104

10K

R99

R45

4K99

R7

10K2

R1

4K42

5

6

U3B

MC33079

7

C18

10u

R34

R39

10K

10K

3

2

-15-3A

R38

10K

U3A

1

C24

10u

OUTHPL+

OUTHPL-

R53

100K

D6

1N4148

R54

100K

R52

200K

R51

A

R15

B

4
5
6

JP1B

CON9_/3

R21

10K

10K

R101

10K2

GsB

C36

100p

8 4

+15-1B +15-2B

GsB

R97

30K1

R113

20K

4 11

R108

4k99

R120

20K

LPR

-15-1B

3

2

U6A

5532

10K2

1

C38

10u

R95

20K

5

6

U6B

5532

7

R117

R110

R112

53K6

40K2

48K7

123

4

GsB

-15-2B

3

2

U7A

MC33079

1

567

8

R98

R94

R111

48K7

40K2

53K6

GsB

5

6

U7B

MC33079

7

123

4

R102

R107

R96

48K7

40K2

53K6

GsB

10

9

U7C

MC33079

8

567

8

R119

R121

R114

48K7

40K2

53K6

GsB

12

13

U7D

MC33079

14

GsA

C43

100p

R116

GsA

R4

30K1

HPR

CON8_/2

JP6A

R103 6k8

C37 33n

R16

JP6B

CON8_/2

JP5A

CON8_/2

JP5B

CON8_/2

4k99

R109

6k8

R26

20K

C34 33n

C39 33n

C40 33n

R5

10K

10K2

R9

C3

100p

8 4

+15-1A +15-2A

10u

R19

20K

GsA

4 11

GsA

GsA

GsA

LPL

10K

-15-1A

3

2

C9

100p

U1A

5532

R23

10K2

1

C4

R3

20K

5

6

U1B

5532

7

HPL

R22

R12

R27

40K2

48K7

53K6

CON8_/2

JP3A

R13 6k8

123

4

3

2

C2 33n

U2A

MC33079

-15-2A

1

JP3B

CON8_/2

567

8

R18

53K6R248K7R840K2

R17

5

6

MC33079

7

123

R11

53K6R640K2

10

9

MC33079

8

567

R25

53K6

12

13

MC33079

14

6k8

C1 33n

U2B

JP2A

CON8_/2

4

R10

48K7

C5 33n

U2C

JP2B

CON8_/2

8

R28

R24

48K7

40K2

C6 33n

U2D

JP4C

CON9_/3

7
8
9

DRAWN

DESIGN

REPLACE

REPL. BY

RAM Audio - S Series

nalog Processor Schematic

47uF/25V

+15

-15

R20

R105

100R

100R

+15-1C

-15-1C

47uF/25V

C10

C35

G15

R93

100R

-15-3B

C29

G15

47uF/25V

+15

-15

R123

100R

-15-2B

C44

47uF/25V

R124

R122

R66

R118

100R

100R

100R

100R

+15-1B

+15-2B

+15-3B

-15-1B

C41

C46

C42

C27

47uF/25V

47uF/25V

47uF/25V

47uF/25V

Sheet 1 of 1DWG No:

A

B

R125

1K

G15

-15

G15

AlZ

D13

12V

+15

-15

C28

R30

R32

100R

100R

-15-2A

-15-3A

C11

C20

47uF/25V

47uF/25V

R33

R29

R65

R31

100R

100R

100R

100R

+15-1A

+15-2A

+15-3A

-15-1A

C7

C14

C8

C21

47uF/25V

47uF/25V

47uF/25V

47uF/25V

C

47u/25V

G15

C19

47u/25V

J5

CON3

123

OUTHPL+

OUTLP+

-15
OUTHPR+

OUTHPL-

GsA

GsC

G15 +15

OUTLP- OUTLP+

G5

J2

EtheRAM IN

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

17 18

19 20

+5

OUTHPR-

OUTLP-

GsB

GsC

OUTHPL+

OUTLP+

CON3

123

J6

D

7654321

8

Manufactured in the EEC by C.E. Studio-2 s.l.

Pol. Ind. La Figuera - C/Rosa de Luxemburgo nº34

46960 Aldaya - Valencia - SPAIN

Phone: [phone] Fax: [phone]

http://www.ramaudio.com e-mail: [e-mail]