Page 1
Index
Soldering point.
M ale connector.
Fem ale connector.
M/F faston connector.
Test point.
Supply voltage.
Logic supply ground.
Analog supply ground.
C hassis ground.
Earth ground.
Flag joined w ith one or m ore flags
GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/959511 - fax 0541/957404
GENERALMUSIC on the NET: http://www.generalmusic.com
SERVICE MANUAL
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CODE: 270223
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Warnings
w ith the sam e signal nam e inscribed.
Address
ATTENTION
O bserve precautions w hen handling electrostatic sensitive devices.
Notice
Service m ust be carried out by qualified personnel only.A ny tam pering carried out by unqualified personnel during the guarantee p e rio d
w ill forfeit the right to guarantee.
For a correct operation of the instrum ent, after having sw itched off, be careful to w ait at least 3 seconds before sw itching on again.
To im prove the device's specifications, the schem atic diagram s m ay be subject to change w ithout prior notice.
All com ponents m arked by this sym bol have special safety characteristics, w hen replacing any of these com ponents use only
m anufacturer's specified parts.
The (µ) m icro sym bol of capacitance value is substituted by U .
The (Ω) om ega sym bol o f resistan ce value is su bstitute d by E .
The electrolytic capacitors are 25Vdc rated voltage unless otherw ise specified.
All resistors are 1/8W unless otherw ise specified.
All sw itches show n in the "O FF " position. A ll D C voltages m easured to ground w ith a voltm eter 20K O hm /V .
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B lo c k D ia g ra m - In p u ts , O u tp u s t & C o n tro ls B o a rd s
Technical Specifications - S pare P art List
6 0 0 W P o w e r A m p lifie r A s s e m b ly (K 6 A c tiv e )
S e c o n d E d itio n
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Tecnichal Specifications
K L A
POWER (EIA RS-426A)
Watts EIA
INPUT SENSITIVITY
dB
POWER SUPPLY
FREQUENCY RESPONSE
Hz (-10dB)
550
HANDLING
DISTORTION
INPUT IMPEDANCE
SENSITIVITY
MAX SPL
MAX SPL
(SPL 1W/1m)
continous
peak
COMPONENTS
CONSTRUCTIONS
CONTROLS
CONNECTIONS
DIMENSION
WEIGHT
BIAS ADJUSTEMENTBIAS ADJUSTEMENT
BIAS ADJUSTEMENT
BIAS ADJUSTEMENTBIAS ADJUSTEMENT
II
nstruments, materials and tools:nstruments, materials and tools:
I
nstruments, materials and tools:
II
nstruments, materials and tools:nstruments, materials and tools:
- Audio Generator
- Dual Trace Oscilloscope with 10x prober.
- Digital Voltmeter (or Multimeter)
- 8W 1000W Resistor
- Temperature Meter
Setup:Setup:
Setup:
Setup:Setup:
- Connect the Audio Generator to the input and set it to output 1KHz sinusoidal signal.
- Connect the Dual Trace Oscilloscope to the input (set CH1trace at 0.5V/div. 200usec./div) and to the output (set CH2 trace at 20V/div. 200usec/div) of the amplifier.
must be earth insulated.must be earth insulated.
must be earth insulated.
must be earth insulated.must be earth insulated.
- Insert the temperature sensor through the interstize between the heatsink and R15 (PTC).
- Unconnect amplifier's output from the cross-over and connect the 8W 1000W resistor instead of it.
- Insert the voltmeter terminals across R22.
ADJUSTMENT PROCEDUREADJUSTMENT PROCEDURE
ADJUSTMENT PROCEDURE
ADJUSTMENT PROCEDUREADJUSTMENT PROCEDURE
1) Turn on the amplifier.
2) Set the input signal to obtain approximatelly 120Vpp on the output.
3) When the temperature has reaches about 50°C (122°F) set the input level
to minimum
4) Adjust the trimmer VR1 to read a voltage of 3±0.05mV on the multimeter.
5) Check that the voltage across the R74 resistor has the same value.
6) At the same temperature condition, adjust the VR2 trimmer to read 4±0.05mV across R26 resistor.
7) Check that the voltage on the R78 resistor has the same value.
Verifing:Verifing:
Verifing:
Verifing:Verifing:
1) Increase the input level to obtain an output voltage about of 0.5Vpp.
2) Check with the oscilloscope that the output signal is without a cross-talk distortion and eventually slightly adjust the VR1 position until distortion disappears. (Note: the voltage value across the R22
and across R74 resistor must not exceed 5mV)
3) Re-connect the cooling fan and the crossover instead of the 8W 1000W resistor.
Watts IHF
(THD+N)
Kohms
0 (0,775 V) with LOW spin OFF
-6 (0,387 V) with LOW spin ON
230Vac +/-15% 50-60Hz - 115Vac +/-15% 50-60Hz
dB
dB
dB
Cabinet: birch plywood.
Finish: Black scratch-resistant paint
Polyurethane front panel
POWERCON power connector
mm (LxAxP)
kg
600
<0,02%
30 balanced
15 unbalanced
98
118
121
40÷320
15" Woofer
Metal Grille
Volume Control.
SHIELD
Limiter ON/OFF.
Combo - 1 XLR-M
542x656x537
41,6
WARNING: The oscilloscopeWARNING: The oscilloscope
WARNING: The oscilloscope
WARNING: The oscilloscopeWARNING: The oscilloscope
Spare Parts ListSpare Parts List
Spare Parts List
Spare Parts ListSpare Parts List
LegendLegend
Legend
LegendLegend
(US) = Specify USA version
(EU) = Specify Europe version
Code Description
Optional AccessoriesOptional Accessories
Optional Accessories
Optional AccessoriesOptional Accessories
950978 SC31 Telescopic Alluminium Support
951136 Mai ns Link Cable for KL-K6 Active
141208 * Mains Power Grey Plug (NTPW3FCB Neutrik)
141205 * Mains Power Blue Plug (NTPW3FCA Neutrik)
AccessoriesAccessories
Accessories
AccessoriesAccessories
277329 Owner’s Manual
887090 Mains Cable (2.5m) (US)
887089 Mains Cable (2.5m) (EU)
141205 * Mains Power Blue Plug (NTPW3FCA Neutrik)
130434 * Mains Cable (US)
130285 * Mains Cable (EU)
190137 5mm Hexagonal Rod Spanner
120142 6x35 Screw with Hex . Head
Cabinet AssemblyCabinet Assembly
Cabinet Assembly
Cabinet AssemblyCabinet Assembly
841179 Speakers Cables Assembly
717066 Cabinet Chassis
667682 Metal Grid
347378 Front Panel
227062 15" Speaker
210242 Filler for Speaker Box (Specify mt)
190181 Rubber Foot with M8 Screw
177676 Metal Grid Fixing
177325 Bespeco Flange
600W Power Amplifier Assembly600W Power Amplifier Assembly
600W Power Amplifier Assembly
600W Power Amplifier Assembly600W Power Amplifier Assembly
737101737101
600W Power Amplifier Assembly (EU)600W Power Amplifier Assembly (EU)
737101
600W Power Amplifier Assembly (EU)
737101737101
600W Power Amplifier Assembly (EU)600W Power Amplifier Assembly (EU)
737102737102
600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)
737102
600W Power Amplifier Assembly (US)
737102737102
600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)
778143 * Amplifier Cables Assembly
667691 * Power Amplifier Bottom Chassis
667690 * Power Amplifier Left Chassis
667573 * Power Amplifier Top Chassis
667571 * Power Amplifier Right Chassis
667689 * Power Amplifier Control Panel
667575 * Fan Grid
659027 * White Potentiometer Knob
659026 * Orange Potentiometer Knob
238074 * Transformer 230Vac 690W (EU) (K6)
238075 * Transformer 115Vac 690W (US) (K6)
210259 * Fan Foam Filter
210215 * Adhesive Rubber Foam 10x1.9mm (Specify mt)
141207 * Mains Power Grey Socket (NTPW3MPB Neutrik)
141204 * Ma ins Power Blue Socket (NTPW3MPA Neutrik)
110291 * Power Switch
110120 * Fuse Clip (US)
110119 * Fuse Clip (EU)
110038 * T16A Fuse 6.3x32mm (US)
110026 * T1.25A Fuse 6.3x32mm (US)
110013 * T1.25A Fuse 5x20mm (EU)
080607 * KBPC25 25A 200V Rectifier Diode Bridge
030890 * 10000u 125V -10+50% V Electrolytic Capacitor VT
020491 * 100nF 10% 250Vac Polyester Capacitor
768199768199
**
768199
768199768199
141189 ** Combo Connector
141186 ** Hor Male XLR Socket (NC3MAH Neutrik)
141011 ** 6 Contacts Vert Female Connector
141010 ** 4 Contacts Vert Female Connector
110267 ** 1sw 2pos Horizontal Slider Switch
080293 ** 1 5V 1 W 5% Zener Diode
768200768200
768200
768200768200
141011 ** 6 Contacts Vert Female Connector
141010 ** 4 Contacts Vert Female Connector
140929 ** 9 Contacts Vert Male Connector
110305 ** Relay 12V / 2 Switch 1A 250V
110267 ** 1sw 2pos Horizontal Slider Switch
100919 ** MC33078 Dual LN Operational Amplifier
100084 ** TL074 Quad J-Fet Operational Amplifier
100061 ** TL072 Dual J-Fet Operational Amplifier
100019 ** TL071 LN J-Fet Operational Amplifier
090194 ** BC560 TO92 LN Pnp Transistor
Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)
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Inputs & Outputs Connectors Board (PCB#313055)
**
Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)
**
Stereo Cross-over & Controls Board (PCB#313056)Stereo Cross-over & Controls Board (PCB#313056)
*
Stereo Cross-over & Controls Board (PCB#313056)
**
Stereo Cross-over & Controls Board (PCB#313056)Stereo Cross-over & Controls Board (PCB#313056)
090183 ** BC550 TO92 LN Npn Transistor
080901 ** VTL5C4 Analog Optoisolator
080743 ** 3 mm Wide Diffused Green Led
080734 ** Led 2.5x5mm Rect Diffused Red-Grn
080293 ** 1 5V 1 W 5% Ze ner Dio de
080168 ** W02M 1.5A Rectifier Diodes Bridge
080156 ** 1N4002 1A 100V Rectifier Diode
080103 ** 1N4148 100mA 75V Signal Diode
075820 ** 4x100K 16mm Hor Rotary Alog Potentiometer
074570 ** 5 K 31steps Linear Potentiometer
070186 ** 10K 20% Vertical Linear Trimmer
042730 ** 115K 1/4W 1% Metalized Film Resistor
042665 ** 33K2 1/4W 1% Metalized Film Resistor
042628 ** 16K5 1/4W 1% Metalized Film Resistor
042625 ** 15K0 1/4W 1% Metalized Film Resistor
042605 ** 10K0 1/4W 1% Metalized Film Resistor
042565 ** 4K99 1/4W 1% Metalized Film Resistor
737095737095
**
737095
737095737095
090924 ** MJL21194 TO264 Npn Transistor
090923 ** MJL21193 TO264 Pnp Transistor
230530 ** 1 uH 10% 630ma Rf Coil
140917 ** 2 Contacts Vert Male Connector
110316 ** R ela y 24V / 1 Switch no 16A 250V
100061 ** TL072 Dual J-Fet Operational Amplifier
100060 ** 7815 +15V 1A Voltage Regulator
100049 ** 7915 -15V 1A Voltage Regulator
090920 ** MJE802 TO126 Npn Darl Transistor
090201 ** 2N5401 TO92 Pnp Transistor
090200 ** 2N5550 TO92 Npn Transistor
090194 ** BC560 TO92 LN Pnp Transistor
090183 ** BC550 TO92 LN Npn Transistor
080282 ** 1 3V 1 W 5% Ze ner Dio de
080245 ** 7 V5 1 W 5% Ze ner Dio de
080168 ** W02M 1.5A Rectifier Diodes Bridge
080158 ** 1N4006 1A 800V Rectifier Diode
080156 ** 1N4002 1A 100V Rectifier Diode
080103 ** 1N4148 100mA 75V Signal Diode
070106 ** 470E 20% Horizontal Linear Trimmer
042725 ** 100K 1/4W 1% Metalized Film Resistor
042685 ** 47K5 1/4W 1% Metalized Film Resistor
042565 ** 4K99 1/4W 1% Metalized Film Resistor
042564 ** 4K75 1/4W 1% Metalized Film Resistor
042557 ** 4K32 1/4W 1% Metalized Film Resistor
042345 ** 75E0 1/4W 1% Metalized Film Resistor
030715 ** 1000u 6v3 20% Vert Electrolytic Capacitor
030526 ** 2200u 35v 20% Snap-In Electrolytic Capacitor
140929 ** 9 Contacts Vert Male Connector
140068 ** 3 Contacts Terminal Block
110120 ** Fuse Clip (US)
110119 ** Fuse Clip (EU)
090919 ** MJE15031 TO220 Pnp Transistor
090918 ** MJE15030 TO220 Npn Transistor
090917 ** M JE 35 0 TO1 26 Pnp Tran sistor
090916 ** M JE340 TO126 Npn Transistor
090183 ** BC550 TO92 LN Npn Transistor
080820 ** Ptc 80 PTH59F04BF222TS
727567 ** Fan Assembly
110363 *** 24Vdc (80x32cm) Fan
210215 ** Adhesive Rubber Foam 10x1.9mm (Specify mt)
177603 ** Amplifier Board Support
841180 * 9 Wires 12.5cm Length Crimp Terminal Cable
840803 * 6 Wires 12.5cm Length Flat Cable
840768 * 4 Wires 10cm Length Flat Cable
600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)
*
600W Power Amplifier Board (PCB#319040)
**
600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)
Wiring ConnectionsWiring Connections
Wiring Connections
Wiring ConnectionsWiring Connections
Note:
Each spare part is single quantity unless otherwise specified.
Asterisk prefix explanation:
Omitted = First level spare part.
One asterisk = Second level, part of previous listed first level part.
Two asterisk = Third level, part of previous listed second level part.
Three asterisk = ............
Any request for not above mentioned part must encompass specific description including:
1) Model name,
2) Section name,
3) Module code,
4) Reference name,
5) Quantity number.
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