JBL DS-10 Service manual

ARC SUB10/DS-10

Powered Subwoofer

SERVICE MANUAL

JBL Consumer Products Inc.
250 Crossways Park Drive
Woodbury, N.Y. 11797
1-800-336-4JBL in the USA

A Harman International Company

Rev A 10/2000

Amplifier/Subwoofer ARC SUB10/DS-10

SAFETY INFORMATION

Warning

Any person performing service of this unit will be exposed to
hazardous voltages and the risk of electric shock. It is
assumed that any person who removes the amplifier from
this cabinet has been properly trained in protecting against
avoidable injury and shock. Therefore, any service
procedures are to be performed by qualified service
personnel ONLY!

Caution

This unit does not have a power switch. Hazardous
voltages are present within the unit whenever it is
plugged in.

Before the amplifier is plugged in, be sure its rated voltage
corresponds to the voltage of the AC power source to be
used. Incorrect voltage could cause damage to the
amplifier when the AC power cord is plugged in. Do not
exceed rated voltage by more than 10%: operation below
90% of rated voltage will cause poor performance or may
shut the unit off.

Leakage/Resistance Check

Before returning the unit to the customer, perform a leakage
or resistance test as follows:

Leakage Current. Note there is no power switch on this unit.
When the power plug is plugged in, the unit is live. Connect
the unit to its rated power source. Using an ammeter,
measure the current between the neutral side of the AC
supply and chassis ground of the unit under test. if leakage
current exceeds 0.5mA, the unit is defective. Reverse the
polarity of the AC supply and repeat.

List of Safety Components Requiring
Exact Replacements

F1 Fuse SLO BLO 0.63A 250V T type.

UL approved

PWRCORD SPT-2 or better with polarized plug, UL

approved wired with the hot side to fused
side. Use with factory replacement panel
strain relief only.

TRX Transformer. Use only factory replacement.

DBR Bridge diode. Use only factory replacement.

C1, 2 3300uF, 50V electrolytic filter caps. Be sure

replacement part is at least the same
working voltage and capacitance rating.
Also the lead spacing is important.
Incorrect spacing may cause premature
failure due to internal cabinet pressure and
vibration.

C6 10uF 50V ±20% Elect. Radial NP Safety Part

See Page 15 Service Bulletin

R29 470W 0.25W ±5% METAL OXIDE Safety Part

S53AMI Power Amp module. Use only factory

replacement

CMC1 mc4438 Safety Part

L1 mc4436 Safety Part

Resistance. Measure the resistance from either side of the
line cord to chassis ground. If it is less than 500k ohms, the
unit is defective.

WARNING! DO NOT return the unit to the customer if it fails
one of these tests until the problem is located and corrected.

Critical Components

All components identified with the IEC symbol
in the parts list and the schematic diagram
designate components in which safety can be
of special significance when replacing a

component identified with . Use only the
replacement parts designated in the parts list or parts with
the same rating of resistance, wattage or voltage.

2

Amplifier/Subwoofer ARC SUB10/DS-10

TABLE OF CONTENTS

SAFETY INFORMATION ...............................................2

TABLE OF CONTENTS .................................................3

GENERAL SPECIFICATIONS .......................................3

DETAILED SPECIFICATIONS.......................................4

ARC SUB10/DS-10 CONTROLS AND

THEIR FUNCTION.........................................................6

CAUTIONS AND WARNINGS .......................................7

ARC SUB10/DS-10 BLOCK DIAGRAM ........................9

SPEAKER CONNECTIONS.........................................10

TROUBLESHOOTING .................................................11

ARC SUB10 / DS-10 TEST SET UP AND

PROCEDURE...............................................................12

ARC SUB10 / DS-10 POWER AMP

MODULE TESTING FLOW CHART ............................13

SERVICE BULLETIN JBL9903 - APRIL 1999 ............14

SERVICE BULLETIN JBL2000-01

JANUARY 2000............................................................15

TROUBLESHOOTING TIPS AND SOLUTIONS

TO COMMON SERVICE PROBLEMS ........................16

CABINET EXPLODED VIEWS ....................................17

AMPLIFIER EXPLODED VIEW ...................................18

ARC SUB10/DS-10 PACKING EXPLODED VIEWS...19

ARC SUB10 Version 5 PCB........................................20

ARC SUB10/DS-10 Version 5.1 PCB..........................21

ARC SUB10/DS-10 ELECTRICAL PARTS LIST ........22

ARC SUB10/DS-10 INTEGRATED CIRCUITS &

TRANSISTORS ............................................................23

ARC SUB10/DS-10 SCHEMATIC................................24

GENERAL SPECIFICATIONS

Amplifier Power (RMS) ........100watts

Driver 10" ..............High-Polymer Laminate

Inputs ................Line Level and Speaker Level

Outputs ...............Speaker Level (only active if Speaker Level Inputs are used)

High-Pass Frequency .........High-Pass filter at 180Hz (only active if Speaker Level Inputs are used)

Frequency Response .........50Hz - 150Hz

(determined by crossover setting)

ARC SUB10 DS-10

Dimensions (HxWxD)........11-1/2 x 17-1/8 x 16-1/2" 14-1/4 x 14-1/4 x 16"

(292 X 435 X 419mm) (362 x 362 x 406mm)

Weight ................27lbs/12.3 kg 27 lbs/12.3kg

3

Amplifier/Subwoofer ARC SUB10/DS-10

DETAILED SPECIFICATIONS

LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes

US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation

EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required

Parameter

Amp Section

Type (Class AB, D,
other)

Load Impedance
(speaker)

Rated Output Power 100 Watts 1 input driven Peak power

THD @ Rated (RMS)
Power

THD @ 1 Watt 0.1 % 0.5 22k filter

DC Offset 10 mV-DC 20 @ Speaker Outputs

Damping factor

Input Sensitivity

Input Frequency 40 Hz 50 Nominal Freq.

Line input

Speaker/Hi Level Input

Signal to Noise

SNR-A-Weighted 100 dBA 70 relative to rated power A-Weighting filter

SNR-unweighted 80 dBr 70 relative to rated power 22k filter

SNR rel. 1W-unweighted 65 dBr 55 relative to 1W Output 22k filter

Residual Noise Floor 1 mVrms

Residual Noise Floor

Specificatio

n

D

4

0.3

50

100

2.6

1.5

Unit

n/a

Ohms

%

DF

mVrms

Vrms

mVrms(max)

QA Test

Limits

n/a Class D Preferred...Sink required for Class

n/a Nominal

1 22k filter

40 Measured at amplifier board Measure at amp board THD < 0.1% 50 Watts

± 2dB

± 2dB

2

2 Volume @max, w/ A/P Swept Bandpass

Volume @max, using DVM or A/P (BW=20 KHz)

Conditions Notes

AB

Z-curve required

50 Watts

@ 50Hz

To Rated power/Vol @ Max Single input driven Un-Balanced GND

Zo=600

To Rated power/Vol @ Max Single input driven Un-Balanced GND

Zo=600

Measurement (Line freq.+ harmonics)
(BW=20 Khz)

Input Impedance

Line Input 10K ohms n/a Nominal Zin Minimum, (test frequency 1 Khz)

Speaker/Hi Level Input 4.7K ohms n/a Nominal Zin Minimum, (test frequency 1 Khz)

Filters

Speaker in LP 2nd order
variable

Subsonic filter (HPF)
2nd order

Speaker out HP filter

Left & Rigth 200 Hz

Left & Rigth 100 Hz

50-150

25

Hz

Hz

± 10

± 10
± 10

-3db Point

Speaker input - Spkr out 4 Ohms

Speaker input - Spkr out 8 Ohms

4

Amplifier/Subwoofer ARC SUB10/DS-10

Limiter

THD at Max. Output
Power

n/a n/a functional

Maximum Output Power

Maximum THD as a result of limiting.

Features

Volume pot Taper
(lin/log)

HP Speaker out functional Refer to filter section

Input Configuration

Line In & LFE YES — functional LR dual RCA jack

Spkr/Hi Level In YES — functional Spring type connector

Signal Sensing (ATO)

Auto-Turn-On YES functional Auto - on selection switch in Auto Bicolor LED (Green=signal/ red= No signal)

ATO Input testfrequency 40 Hz functional “

ATO Line level in 5 mV functional "

ATO Level Speaker in 50 mV functional "

ATO Turn-on time

Auto Mute/ Turn-OFF
Time

Power on Delay time

Transients/Pops

ATO Transient 5 mV-peak 50

Turn-on Transient 2 Vpk-pk 2 @ Speaker Outputs AC Line cycled from OFF to ON

Turn-off Transient 2 Vpk-pk 2 @ Speaker Outputs AC Line cycled from ON to OFF

—

LOG

15

0.1 sec. 5 AC Power Applied

— functional

5

ms functional

minutes

17 T before muting, after signal is removed Auto turn of time (T) must be 3>T<15

Amp connected and AC on, then input signal
applied

Minutes

Efficiency

Efficiency 65 % 64 Nominal Line voltage 120 VAC / 230 VAC

Stand-by Input Power

Power Cons. @ rated
power

Protection

Short Circuit Protection

Thermal Protection

Line Fuse Rating

US (120v) version Amps 0.6 Type-T or Slo Blo-250 V Internal fuse

EU Amps TBD Type-T or Slo Blo-250 V External fuse with UL/SEMKO rated holder

15

76

YES

YES

Watts

Watts

18 @ nom. line voltage Auto turn of time (T) must be 3>T<15

80 @ nom. line voltage

functional

functional

Direct short at output Amplifier should resume operation after short

@1/8 max unclipped Power IEC Noise

using driver load

Minutes

75 Watts @ 4 Ohms nominal line voltage

circuit condition removal

Temperature rise in accessible metal parts
should not exceed 35K rise for 120v version
or 30K rise for European versions (refer to
requirements sheet).

5

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 CONTROLS AND THEIR FUNCTION

1. Volume Control - adjusts the level of volume of the

subwoofer relative to the rest of the system.

2. Power LED - This light will be RED when the unit is

plugged in and not receiving a signal; when the unit
receives a signal, the light will cycle to GREEN. If no
signal is received after 5 minutes the light will cycle
back to RED (standby) until a signal is present again.

3. Crossover Frequency - This controls the highest

frequency the subwoofer will reproduce. It allows a
seamless transition from the subwoofer to the
satellite speakers. When the control is at the “50”
position, very few high frequencies will be heard.
This position is best suited to large main speakers.
For most applications, the control should be set
somewhere near the mid position. For listeners using
very small speakers, best results will be obtained
with the control at the “150” position.

4. Low Level Input Jacks - These left and right Line

Level Inputs are normally used when the receiver/
processor has line-level “pre-amp out ” or “subwoofer
out” jacks.

5. High Level Inputs - These High Level Inputs are for

receivers that do not have line-level “pre-amp out”
or “subwoofer out” jacks. When a pair of main or
satellite speakers are attached to the OUTPUT
terminals, frequencies below 180 Hz are attenuated
by the high-pass filter.

Note: DS-10 controls
are shown here

Volume

Min

Power

Crossover

Frequency

50

Low

Level

In

L

Max

150

R

1

2

3

4

R

L

SPKR

IN

5

SPKR

OUT

6

Amplifier/Subwoofer ARC SUB10/DS-10

CAUTIONS AND WARNINGS

BEFORE THIS AMPLIFIER IS PLUGGED IN, make sure its rated voltage corresponds to the voltage of the AC power
source to be employed. Failure to use the correct voltage could cause damage to the amplifier when the AC power
cable is plugged in. Do not exceed the rated voltage by more than 10%; operation below 90% will degrade
performance or cause the unit to shut off.

1. TROUBLE SHOOTING BEFORE OPENING

Check connections, control settings, driver and other possible
external problems. If there is Output, determine if all controls
and Inputs function properly. Rotate Pots over full range while
applying lateral and vertical oscillating forces to locate possible
intermittent function. High Level Inputs should be tested
individually both differentially (signal from "-" to "+" with normal
output) and in common mode (signal from low level ground to
both "+" and "-" shorted together, giving virtually no output).
While passing a signal, corner drop the enclosure a few inches
to expose possible intermittent problems. Check woofer for
rubbing of voice coil or tears in cone or surround. Check
cabinet for loose extraneous articles which may have been
pushed into port.

2. REMOVING THE AMPLIFIER.

There are voltages and hot components at many points in
the amplifier which can, if contacted, cause personal injury.
Be extremely careful. Any adjustments or service
procedures that require operation of the amplifier out of its
enclosure should be performed only by trained service
personnel. Refer to PCB drawings for locations of hazards
and familiarize yourself with their locations before starting.

A. Remove the subwoofer grille.

B. Remove the (4) 1” Black PPH screws attaching the

woofer to the cabinet.

Verify AC plug is disconnected. See WARNINGS in section

2.

To prevent loose hardware from reducing safety spacings, it
is essential that all hardware be replaced in the same
manner as it was removed, with lock washers under all nuts,
proper torque on screws and thread locking sealer on the
transformer nuts.

If line core or strain relief are replaced, it is necessary to
seal them completely to panel with an approved conformal
coating to prevent air "whistling" through any openings from
woofer pressure.

To reduce the risk or electric shock and/or fire,
replace items as marked on schematic with the
safety marking only with the exact replacements
listed in the safety component list, page 2. If
exact replacements are not available, order them from the
factory or an authorized service center.

A. Check fuse F1. If blown visually check transformer for

discoloration, and large capacitors (C1, C2) for bulges
or venting. Check for shorts with an Ohmmeter,
(see schematic).

C. Remove the woofer, unplug the two connecting wires.

D. Remove the (8) ¾” screws black pph screws

attaching the ampifier assembly to the cabinet.

E. Remove the ampifier assembly.

F. For access to the input panel, first remove the three

outer screws. Remove knob and nuts from
potentiometers. Cut away the sealant securing the
cover to the faceplate. The input PCB should now
pull out completely.

3. TROUBLE SHOOTING AFTER REMOVAL

B. With ohmmeter, verify voice coil of woofer is 3.9

ohms, and windings of transformer are continuous.

C. Examine board and wiring for obvious damage,

broken or poorly soldered connections, or
discoloration.

D. Repair or replace items identified above.

E. For live power testing, attach a 4 ohm 100 watt

resistor to the output wires.

F. If the LED is not on, check for fuse continuity and

then for cold solder joints on CMC1 and bridge diode.

G. With a signal present at the input, the output to the

power amp is at pin #8 of U1. If the signal is not
present at pin 8, there is a problem with preamp
section. Most likely, a cold solder joint will be the

7

Amplifier/Subwoofer ARC SUB10/DS-10

problem. Track back the signal path to locate
problem.

H. If signal present at pin 8, but still no sound, check

for cold solder joints on all power resistors, R4a and
R4b and the the power amp module. If C24 is
blown, C6 is not soldered or is defective. Check the
signal at R2. On the down signal side, the voltage
signal should be very small. If signal is similar on
both sides of R2, the amp module is likely defective.

I. If you hear a mechanical clicking noise from the amp

module, this indicates that the short circuit protection
has been engaged. Check that Q3, Q4 and Q5 are
soldered correctly. Also check that Q3 is not shorted
to power amp case.

J. If you have to replace the power module, be very,

very patient with the solder removal from this single
sided PCB. COMPLETELY REMOVE SOLDER

BEFORE TRYING TO REMOVE THE MODULE!

(See page 23)

K. Assembly notes. Top side soldering as below:

J5: solder both ends

RCA jack (chassis) to the line neutral of AC

cord. Resistance should be >100MW .

B) Hi-Pot Test

If a UL approved Hi-Pot tester is available, test
line & neutral of AC cord to outer shell of RCA
jack (chassis) at 1100VAC for 2 seconds.
Observe all of instrument manufacturer's
instructions and safety warnings in performing
this test.

Connect subwoofer system to a music source. Play at high
level while checking for air leaks around panel edge, driver,
panel jacks and controls, and voice coil problems such as
rubbing or loose turns. With the crossover "frequency" set
to 50Hz, very little of the voice content should be heard.

4. REASSEMBLY

Follow all disassembly instructions in reverse order. If the
input plate has been removed, it must be re-sealed with a
small bead of silicon seal or air leaks may result.

J3: solder both ends

J1: solder both ends

R48: solder GND end

At junction of C7a/C7b: Pin to GND

Crossover pot Gnd wire from PDB pad to POT
barrel. (Only physical contact required between
pot body and faceplate).

After repair, inspect for possible safety hazards, including
loose hardware, missing lock washers, correct fuse and
lead dress of primary wires (these must be held in position
with cable ties so that they cannot touch secondary
components). With ohmmeter, check that panel is
connected to signal ground.

It is essential that the following safety insulation test be
performed prior to returning the Power SubWoofer to the
customer, using one of the following methods.

A) Insulation Resistance Test

With a 500VDC Insulation Tester, Check
insulation from the outer metal contact of the

8

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 BLOCK DIAGRAM

A

B

C

D

1

LR

2

SPKR

In

SPKR

Out

High Level

Input

3

Low Level In

L

R

Low Level

Input

Summing

Circuit

Volume
Control

E

1

2

3

Equalization

4

Waveform

Recovery and

Fixed Low Pass

5

Crossover

Control

6

Short Circuit

Protection

Power

Amplifier

4

5

6

Woofer

7

A

B

C

D

E

7

9

Amplifier/Subwoofer ARC SUB10/DS-10

SPEAKER CONNECTIONS

Note: DS-10 controls are shown here

RECEIVER/AMPLIFIER

Line Level

Note: Some receivers/amplifiers have
a single (mono) subwoofer output. In
this case, it is recommended that you
use a “Y”-connector (not included) to
connect to both right & left inputs and
maximize the subwoofers
performance.

Volume

Min

Crossover
Frequency

Low

Level

In

R

L

SPKR

Power

50

L

IN

Max

150

R

SPKR

OUT

SUBWOOFER OUT

LEFT

MAIN SPEAKER OUTPUT

RIGHT

RIGHT

LOUDSPEAKER

RIGHT

LEFT

LEFT

LOUDSPEAKER

Speaker Level

Note: When using the speaker-level
connections, the built-in high-pass
filter will also limit the low
frequencies being sent to the
satellite speakers. This means that
your satellites won't have to try to
reproduce the information the
subwoofer is playing.

RECEIVER/AMPLIFIER

MAIN SPEAKER OUTPUT

LEFT

RIGHT

Volume

Crossover
Frequency

Low

Level

In

R

L

SPKR

Min

Power

50

L

IN

Max

150

R

SPKR

OUT

LEFT

LOUDSPEAKER

RIGHT

LOUDSPEAKER

10

Amplifier/Subwoofer ARC SUB10/DS-10

TROUBLESHOOTING

If you used the high-level (speaker) inputs and
there is no sound from any of the speakers, check
the following:

Receiver/amplifier is on and a source is playing.

n

Powered subwoofer is plugged in.

n

Check all wires and connections between

n

receiver/amplifier and speakers. Make sure all wires
are connected. Make sure none of the speaker
wires are frayed, cut or punctured.

Review proper operation of your receiver/amplifier.

n

If there is low bass output, check the following:

Make sure the connections to the left and right

n

“Speaker Inputs” have the correct polarity (+ and –).

Make sure that the subwoofer is plugged into an

n

active electrical outlet.

Adjust the crossover point.

n

If you used the line-level inputs and there is no
sound from the subwoofer, check the following:

Receiver/amplifier is on and a source is playing.

n

Powered subwoofer is plugged in.

n

Check all wires and connections between receiver/

n

amplifier and subwoofer. Make sure all wires are
connected. Make sure none of the wires are frayed,
cut or punctured.

Review proper operation of your receiver/amplifier.

n

n If you are using a Dolby* Digital/DTS

Ò

receiver or
processor, make sure that the subwoofer
adjustments on the receiver/processor are set up
correctly.

n

Slowly turn the level Control clockwise until you
begin to hear the desired amount of bass.

11

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10 / DS-10 TEST SET UP AND PROCEDURE

Volume

Crossover
Frequency

Low

Level

In

Min

Power

50

L

Max

150

R

CD PLAYER

PRE AMP

AMPLIFIER

AC VOLT METER ( 6V )

LINE LEVEL

ARC SUB10 / DS-10

UNDER TEST

FROM LINE-LEVEL
SOURCE

SPEAKER OUTPUT
FROM AMPLIFIER

SPEAKER LEVEL

R

L

SPKR

SPKR

OUT

IN

General Function

UUT = Unit Under Test

1. Connect both right and left line level inputs (RCA) to signal generator and UUT. Use Y-cable if necessary from
mono source. VOLUME control should be full counterclockwise.

2. Turn on generator, adjust to 50mV, 50 Hz.

3. Plug in UUT; red LED should be ON. Turn VOLUME control full clockwise.

4. LED should turn Green; immediate bass response should be heard and felt from port tube opening.

5. Turn off generator, turn VOLUME control fully counterclockwise, disconnect RCA cables.

6. Connect one pair of speaker cables to either high level input terminal on UUT. Cables should be connected to
an integrated amplifier fed by the signal generator.

7. Turn on generator and adjust so that speaker level output is 2.0V, 50 Hz. Turn VOLUME control full clockwise.

8. Green LED should light, immediate bass response should be heard and felt from the port tube opening.

Sweep Function

1. Follow steps 1-4 above, using a sweep generator as a signal source.

2. Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any
other noises. If any unusual noises are heard, remove driver and test.

Driver Function

1. Remove driver from cabinet; detach + and - wire clips.

2. Check DC resistance of driver; it should be 3.2 to 3.9 ohms.

3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by
a signal generator and adjust so that speaker level output is 5.0V.

4. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.

12

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10 / DS-10 POWER AMP MODULE TESTING FLOW CHART

START

Check V+,
V-, +/-15V

Resistance
check
between V+
V- and O/P

No

O/P to GND
should > 5K

Yes

No

OK

Replace
Module

Yes

No

Power up with

no signal I/P

LED RED

Yes

voltage to

module

OK

Check 6V to

module

measure to V-

OK

Check

transformer,

CMC,

rectifier, C1,

C2, D9, D10,

R16, R17

Check D6,

R9, R46

No

OK

Yes

Check I/P of

No

module to

GND 0V D.C.

No Yes

OK

Check fuse

transformer,

CMC,

rectifier, C1,

C2

Check C12

and Pre-AMP

Check S/D
voltage to
module (5V)
measure to V-

Check O/P to

module for

Yes

Check

switching

80Vpp square

wave

measure to

GND

frequency

100KHz

H

+/-10%

No

~1Vpp

Yes
No

OK

Check L1,

L2, C6, C24

Yes

OK

OK

Check D1,
R1, Q3, Q4,
Q5 and SCP

Power AMP

OK

END

13

Amplifier/Subwoofer ARC SUB10/DS-10

SERVICE BULLETIN JBL9903 - APRIL 1999

To all JBL Service Centers This considered a Minor repair
Model: ARC SUB10 / DS-10

Subject: Check Solder Joints in Event of Failure

Some performance related complaints in the ARC SUB10 / DS-10 powered subwoofer may be caused by cold
Solder connections between the 28 pins of the Power Amp Module and the main circuit board. When
troubleshooting, failure to check these joints can result in erroneous conclusions or wasted time.

In the event you receive a ARC SUB10 / DS-10 Subwoofer with the complaints “Dead, or No Output, or
Motorboating (Oscillation)”, perform the steps listed below first before any further troubleshooting takes
place:

Unplug all cables, lay the subwoofer on a padded surface.

1)

Remove all Philips screws around the outer perimeter of the amplifier faceplate.

2)

Remove amplifier assembly; you should be able to remove the amplifier far enough out of the cabinet to

3)

service it without removing the woofer wires.

Locate the Power Amp Module; it is the large gray component with a metal case. On the Solder side of the

4)

circuit board are the 28 Solder connections to the Module.

Regardless of whether you can visibly see breaks in any of the connections or not, carefully re-Solder all 28

5)

pin connections, adding 60/40 rosin core Solder. Take care not “bridge” any connections on the board with
Solder.

Inspect the Solder joints to the main filter capacitors C1 and C2 on the main PCB and re-Solder if needed.

6)

Replace the amplifier assembly back into the cabinet; replace the screws.

7)

Test the unit by applying a signal from a music source, adjust the volume to a moderate level and confirm the

8)

original problem has been corrected.

14

Amplifier/Subwoofer ARC SUB10/DS-10

SERVICE BULLETIN JBL2000-01 - JANUARY 2000

To all JBL Service Centers Warranty labor rate: MINOR repair
Model: ARC SUB10 / DS-10

Subject: Failure of C6

In the event you receive a JBL subwoofer corresponding to one of the above models with the complaint “no output” and
capacitor C6 (10uf 50v NPE) is damaged in the amplifier, replace with the following part: JBL part# 30712 (10uf 100v NPE)

General reference for location only; not all parts or designators may conform to these drawings

It is also recommended following the repair that the instructions included in bulletin #JBL9903 are followed.

Models Serial number 120/230V Status Action

ARC SUB10 / DS-10 All serial numbers affected

Replace if damaged Replace C6 with JBL part# 30712

15

Amplifier/Subwoofer ARC SUB10/DS-10

TROUBLESHOOTING TIPS AND SOLUTIONS TO COMMON SERVICE PROBLEMS

For models: ARC SUB 8, ARC SUB 10 TIP# JBLTT2000-01

Complaint:

How do you replace or service any of the front panel components on the Subwoofer faceplate for model ARC
SUB 10 ?

Probable Cause:

The High level Input terminals, potentiometers, RCA jack, and switch(es) are behind a sealed cover to protect the
air-tight integrity of the cabinet enclosure.

Solution:

Unplug all external cables from the subwoofer; place the cabinet on a padded surface.

1)

Remove any subwoofer grille; remove the woofer from the cabinet. Detach the two connections from the

2)

woofer terminals.

Remove all Phillips screws holding the amplifier to the cabinet; remove the amplifier.

3)

Remove all knobs, nuts, and Philips screws from the outer control section of the amplifier faceplate.

4)

Locate the sealed cover on the inside of the amplifier faceplate (see illustration); the bead of adherent must

5)

be broken to remove the main PCB with front panel components from the plastic faceplate. This is most
easily accomplished by CAREFULLY using a box cutter, exacto knife, or similar sharp instrument. First scrape
all excess material from the three surfaces; then force the blade into the groove between the rear cover and
the faceplate. DO NOT attempt to remove the rear cover from the main PCB.

When enough material is removed, the main PCB with cover can be pulled away from the faceplate,

6)

exposing the components.

After servicing, a bead of “silicon seal” or similar adherent must be applied to all surfaces where it was

7)

removed. Reassemble the rest of the components in reverse order.

16

Amplifier/Subwoofer ARC SUB10/DS-10

CABINET EXPLODED VIEWS

GRILLE

ARC SUB10 CABINET
EXPLODED VIEW

CABINET

(NOT FOR SALE)

AMP ASSEMBLY

(NOT FOR SALE)

e
m

x

lu

a

Vo

M

in
M

r

y

e

c

w

n

o

e
u

P

q
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r
e

0

v

5

o

1

s
s
o
r
C

0
5

In
l
e
v

L

e
L
w

R

o
L

N

R

8

IO

.

T

C

A

A

IN

D

IC

,

A

B

S

IF

L

N
A

T

L

C

C

P

T

N
I

O

U

E
N

M

U

R

E

O
U

D

D
T

A

.

D

S

K

I
K

O

C

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l

A

C
O

O

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M

H

H

M

R

O

R

S

R

S

X

I

O

N
C

C

ita

I

I

E

P

N
I

X

S

R

K

T

P

R

In

T

A
T

O
C

X

R
C

U

E

ig

T

P

A

E

R

L
O

X

L
TO

E
N

E

A

T

D

C

S

F

E

X

R

F

O

N

O

-

t

O

D

E

C

,

K

K
M

X

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M

e

S

u

S
P

I

I
I

E

t

R

X

R
U

P

U

Q
E

O

e

X

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H

G

T

r

S

S

S

X

I

C

E
H
C

c

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X

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.

T

o

R

L

N

R

l

B

O

J

L

ria

N

e

T

S

R

A

N

C
A
V

3

0

z

~

1

2

H

1

W

1

0

0

0

1

6

1

11

R
L

GRILLE
RETAINER
CUPS (4)
#201080

#200110

SCREWS (4X)

10" WOOFER
#200500

SCREWS (8X)

DS-10 CABINET
EXPLODED VIEW

CABINET

(NOT FOR SALE)

AMP ASSEMBLY

(NOT FOR SALE)

e
m

x

lu

a

Vo

M

in
M

r

y

e

c

w

n

o

e
u

P

q
e
r
F
r
e

0

v

5

o

1

s
s
o
r
C

0
5

In
l
e
v

L

e
L
w

R

o
L

N

R

8

IO

.

T

C

A

A

IN

D

IC

,

A

B

IF

S

L

N
A

T

L

C

C

P

T

IN

O

U

M

E
N

U

R

E

O
U

D

D
T

A

.

D

S

K

I
K

O

C

l

N

A

C
O

O

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M

H

H

a

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R

O

R

S

R

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I

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C

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I

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1

0

0

0

1

6

1

11

R
L

SCREWS (8X)

ARCSUB10 LABEL
#200160

GRILLE

RETAINER

CUPS (4)

#201080

GRILLE

#201010

SCREWS (4X)

WOOFER TRIM
RING #201060

KICKPLATE
with LOGO
#201070

SCREWS (4X)

10" WOOFER
#201000

DS-10 LABEL
#201150

17

Amplifier/Subwoofer ARC SUB10/DS-10

AMPLIFIER EXPLODED VEIW

A

Part #

Ref.#

1 70170 #4x0.5" screws to secure input jacks 3

1

2 70171 #10 x 1" machine screw bolts for 4

3 70172 #10 keps nuts for transformer 4

4 70173 #6 x 0.5" screws for fuse PCB 2

5 A70301 Metal bracket mounted 1

6 A70302 2

10 80108 Transformer #4340 SAFETY PART 1

2

11 80109 250V, 0.63A, T type slo blo fuse 1

12 80105 Power cord, 2 conductor SAFETY PART 1

13 80106 Fuse PCB complete with connectors 1

14 80107 Motherboard SAFETY PART 1

15 200603 ARCSUB10 Faceplate with labels 1

3

201003 DS-10

16 A70304 Air leak cover SAFETY PART 1

17 70305 Pwr cord strain relief SAFETY PART 1

18 108320 Dual RCA input jacks 1

108115

19 High level input and output terminals 1

transformer 4 per unit

Hum shield
on transformer

Knobs

TRX

F1

SAFETY PART

Main PCB

SAFETY PART

Faceplate with labels 1

SAFETY PART

B

Description

Qty

C

D

ARC SUB10/DS-10

Amplifier Assembly
Exploded View

3

10

5

14

E

1

2

4

3

11
13

4

DS-10 Shown

16

4

17

Volume

Min

Max

5

Power

6

15

5

12

Crossover
Frequency

Low

Level

In

50

150

R

L

6

18

6

2

6

1

R

19

L

SPKR

7

SPKR

IN

OUT

7

A

B

C

D

E

18

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 PACKING EXPLODED VIEWS

DS-10
PACKING

ARC SUB10
PACKING

RUBBER FEET (4)

WARRANTY CARD

#331993-001

OWNER'S MANUAL

#201030 (120V)

STYROFOAM
CORNERS (8)
PER BOX

DS-10

PLASTIC BAG

#101145

DECADE

RUBBER FEET (4)

#101145

WARRANTY CARD

#331993-001

OWNER'S MANUAL

#200130 (120V)

FOAM CORNER
PADS

ARC SUB10

SERIES

PLASTIC BAG

STYROFOAM
CORNERS (8)
PER BOX

CARTON
#201020

DS-10

FOAM CORNER
PADS

ARC SUB10

CARTON
#200120

19

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10 Version 5 PCB

A

B

C

D

E

The PLAIN 5 PCB was used in ARCSUB10

1

PLAIN 5 - Component Side Trace

2

3

1

2

3

4

4

PLAIN 5 - Solder Side Trace Layer as viewed through the board

5

6

7

5

6

7

A

B

C

D

E

20

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 Version 5.1 PCB

A

B

C

D

E

PLAIN 5.1 - Component Side Trace

1

2

3

1

2

3

4

4

PLAIN 5.1 - Solder Side Trace Layer as viewed through the board

5

6

7

5

6

7

A

B

C

D

E

21

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 ELECTRICAL PARTS LIST

Ref. # Part Number Description Qty Ref. # Part Number Description Qty

Product Safety Notice: Components identified by the IEC symbol in the part list

and on the schematic designate safety components in which safety can be of
special significance. When replacing a Active component with the symbol . Use
only replacement parts with the same rating hardware designated in the parts list.

Capacitors

C1, C2 30701 3300uF 50V ±20% Elect. Radial Safety Part 2

C3, 4, 5, 8, 9, 30502 100nF 50V ±10% Mono-ceramic axial 12

10, 14, 17, 18,
19, 20, 24

C6 30705 10uF 100V ±20% Elect. Radial NP Safety Part1

C7A, B 30505 100nF 100V ±20% Metal Polyester Rad 2

C7 30509 2.7nF 50V ±10% Mono-ceramic axial 1

C10 30504 100nF 50V ±10% Mono-ceramic axial 1

C11 30702 100uF 35V ±20% Electrolytic Radial 1

C12 30714 10uF 35V ±20% Electrolytic Radial 1

C13 30506 1nF 50V ±10% Mono-ceramic axial 1

C15, 16 30704 or 30707 220uF 50V ±20% Electrolytic Radial Bipolar 2

C21, 28 30507 10nF 50V ±20% Mono-ceramic axial 2

C25 30503 2.2nf 50V ±10% Mono-ceramic axial 1

See Page 15 Service Bulletin

Diodes

DBR 50100 Bridge Rect 200V 4A Safety Part 1

D1 50101 1N5256B 30V ±5% 0.5W Zener 1

D3 50102 1N4749A 24V ±5% 1W Zener 1

D6 50103 1N5234B 6.2V ±5% 0.5W Zener 1

D7, 8 50104 1N4148 100V ±5% 0.1A 2

D9,10 50105 1N4744A 15V ±5% 1W Zener 2

LED 1 or 2 50106 Dual Cir LED (2 legged)

Integrated Circuit

U1 60100 LM324 Quad OpAmp +/-15 1

Resistors

FRQ pot 40401 100kW 0.25W ±10% Single Log Pot 1
VOL Level pot 40402 5kW 0.25W ±10% Single Linear Pot 1
R1 40403 2.2MW 0.25W ±5% carbon film 1
R2 40408 8.45kW 0.25W ±1% metal film 1
R3 40412 33.2kW 0.25W ±1% metal film 1
R4A, B 40105 0.1W 0.5W ±5% 2pcs. 2
R5, 6 40420 1kW 0.25W ±5% carbon film 2
R7 40718 3.3kW 0.25W ±5% carbon film 1
R8 40417 47kW 0.25W ±5% carbon film 1
R9 40421 3.9kW 5W ±5% 3W can be used 1
R10, 13 40748 2kW 2W ±5% carbon film 2
R11, 12 40112 665W 0.5W ±5% carbon film 2
R14, 20 40405 4.7kW 0.25W ±5% carbon film 2

R15, 42, 43, 57 40406 100kW 0.25W ±5% carbon film 4
R16 40101 820W 2W ±5% carbon film 2
R17 40407 330kW 0.25W ±5% carbon film 1
R18 40423 270kW 0.25W ±5% carbon film 1
R19 40422 1kW 0.5W ±5% carbon film 1
R22 40410 2.2kW 0.5W ±5% carbon film 1
R26 40701 1.0MW 0.25W ±5% carbon film 1
R27 40411 24.9kW 0.25W ±1% metal film 1
R29 40103 470W 0.25W ±5% METAL OXIDE Safety Part 1
R30 40413 274kW 0.25W ±1% metal film 1
R31 40414 49.9kW 0.25W ±1% metal film 1
R32 40415 470kW 0.25W ±5% carbon film 1
R35 40424 332kW 0.25W ±1% metal film 1
R36, 38, 40 40417 47kW 0.25W ±5% carbon film 3
R37 40418 22kW 0.25W ±5% carbon film 1
R39, 48 40419 6.04kW 0.25W ±1% metal film 2
R46 40111 4.7W 0.25W ±5% carbon film 1
R49 40431 68kW 0.25W ±5% carbon film 1
R53, 54, 55, 56 40106 100W 2W ±5% carbon film 4

Transistors

Q1 60151 MPS A13 30V NPN(Darl) Transistor 1

Q2 60152 2N3906 40V PNP Transistor 1

Q3 60156 2N4401 40V NPN Transistor 1

Q4, 5 60154 MPS A56 80V PNP Transistor 2

Miscellaneous

S53AMI 60301 Power Amp module Safety Part 1

CMC1 80100 2.2mH Choke Safety Part 1

L1 80101 110uH Choke Safety Part 1

L2 80102 2.2uH Ferrite Bead 1

TRX 80108 TRANSFORMER #4338 Safety Part 1

F1 80109 FUSE 250V, 0.63A, T type Slo-Blo Safety Part 1

22

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 INTEGRATED CIRCUITS & TRANSISTORS

S53AMI/S64AMI - Power Amp module SAFETY PART

+6V

v+

O/P

V-

+15V

SD

FR

I/P

GND

-15V

15

16

17

18

19

20

21

22

23

24

25

26

27

28

1

2

3

4

5

6

7

8

9

10

11

12

13

14

+6V

v+

O/P

V-

+15V

SD

FR

I/P

GND

-15V

NOTE: THE FOLLOWING PROCEDURES MUST BE FOLLOWED
WHEN INSTALLING NEW S53AMI/S64AMI AMP MODULES:
FAILURE TO FOLLOW ONE OR MORE OF THESE STEPS MAY
RESULT IN THE INSTANT DESTRUCTION OF THE MODULE WHEN
POWERED UP.

1)

Align white indent marker on Amp Module with indent marker on main
PCB; alternately observe position of label on the top of the module;
incorrectly replacing the Module 180 in the PCB slot will result in its

°

destruction.

2)

All AC powered test instruments (meters, oscilloscopes, etc.) must
have a floating ground, i.e. be connected to an isolation transformer.

3)

Align and position the Amp Module before soldering.

4)

Attach the amp Module with the mounting screws or

before soldering

powering up.

5)

Use only rosin-core or non-acid core solder; thoroughly de-flux the
surfaces after soldering.

If the new S53AMI/S64AMI Amp Module has larger mounting hole(s) in
the case, and the stock screws no longer will fit, and screws of the
proper type cannot be obtained locally order:

(2) part# 60301S (screws)

(2) part# 60301N (nuts)

U1-(LM324) Quad Op Amp

+

OUT 4

14 10

-

IN 4

13 9

GND

IN 4

11

12 8

-

+

43

+

12

-

15

OUT 1

IN 1

Q4, 5 - (MPS A56)
80V PNP Transistor

3 Collector 3 Collector

2

Base

11

22

33

1 Emitter 1 Emitter

37

26

-

IN 1

4

+

V+

Q2 - (2N3906)
40V PNP Transistor

IN 3

IN 2

2

Base

+

-

IN 3

OUT 3

-

+

+

-

+

-

IN 2

OUT 2

Q3 - (2N4401)
40V NPN Transistor

3 Collector 3 Collector

2

Base

11

22

33

1 Emitter

Q1 - (MPS A13)
30V NPN(Darl) Transistor

2

Base

1 Emitter

23

Amplifier/Subwoofer ARC SUB10/DS-10

ARC SUB10/DS-10 SCHEMATIC

G

F

E

1

PROTECT

R8

CIRCUIT

SHORT

47k

R7

3k3

2N4401

Q3

R29

470R

S53

MODULE

100nF

C8

+6V Supply

Q5

Q4

MPSA56

MPSA56

+6V

R46

D6

R5

47r

1k

1N4735A

DA

R9

3k9

1N5234B

2

UVLO

3

FIT TERMINAL

FIT TERMINAL

SPK-

QUICK

C24

R6

1k

R4B

0.1R

R4A

0.1R

V+

O/P

R1

D1

2200k

1N5256B

R16

820r

100nF

See page 15

C6

10uF

Service Bulletin

V-

QUICK

L2

110uH

L1

2.2uH

SPK+

C3

R15

FILTER

OUTPUT

+15V

100k

100nF

10k

R28

C28

10nF

R3

33k2

I/P

FR

S/D

1N4744A

D10

C4

100nF

C12

R49

68K

-15V

GND

1N4744A

D9

C5

100nF

10uF

4

FIT TERMINAL

FIT TERMINAL

FIT TERMINAL

QUICK

QUICK

QUICK

GND

AC Feed

AC Return

100nF

100nF

C7A

C7B

2m2H

CMC

V-

V+

BR RECT

R17

820r

RS604

C2

3300uF

FUSE (On FUSE PCB)

Cord

To Power Cord

To Power

0.63A

TRX

MCI 4338

To GND

To AC Feed

To AC Return

GND

5

ON FACEPLATE

IS MOUNTED

TRANSFORMER

G

F

E

D

C

B

A

3n3F

C25

Lo-Pass

700Hz

LO-PASS

/EQ

HI-PASS

ARC SUB10/DS-10

Schematic

9

R37

R38

47k

R36

R14

7

2n7F

C7

6

R27

CONTROL

100k Lin Pot

R30

274k

LOPASS

R31

C10

14

U1

R35

332k

13

C19

100nF

C20

C18

1

R2

R57

LM324

LM324

8k45

CLIPPER

DIODE

R11

C21

10nF

100k

C14

100nF

R48

6k04

6k04

R39

2

665r

D7

1N4148

D8

1N4148

C16

5k LOG

SPKR LEV IO

200uF

SPKR LEV IO

R12

LEVEL

R40

2k

R10

2k

R13

665r

2

3

1

C17

Control

1

+15V

U1

4

47k

R

R

2

3

TERMINAL

L

High Level In

C15

200uF

L

TERMINAL

High Level Out

100nF

11

-15V

C9

100nF

R42 100k

R43

100k

R53 100r

R56 100r

R55 100r

R54 100r

LED

LED1

DRIVE

V+

V-

R21

2 Clr LED

R20

4k7

3

8

U1

10

22k

47k

4k7

U1

5

24k9

49k9

100nF

12

100nF

100nF

C1

3300uF

D

R19

1k

10k

2k2

R22

Q2

2N3906

D3

1N4749A

MPSA13

Q1

R32

470k

R26

1000k

C11

100uF

R18

330k

1nF

C13

C

B

R45

10k

LIP

RCA

R44

10k

INPUT

RIP

RCA

RCA Connector

LINE LEVEL

A

4

5

24