Read JBL DS 10 (serv.man2) Service Manual online
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
ARC SUB10/DS-10
Powered Subwoofer
SERVICE MANUAL
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.
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.
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
470
W
0.25W ±5% METAL OXIDE Safety Part
S53AMI
Power Amp module. Use only factory
replacement
CMC1
mc4438 Safety Part
L1
mc4436 Safety Part
2
Amplifier/Subwoofer
ARC SUB10/DS-10
3
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) . . . . . . . . 100 watts
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 (H x W x D) . . . . . . . . 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 . . . . . . . . . . . . . . . . 27 lbs/12.3 kg
27 lbs/12.3kg
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
Specificatio
n
Unit
QA Test
Limits
Conditions
Notes
Amp Section
Type (Class AB, D,
Type (Class AB, D,
other)
D
n/a
n/a
Class D Preferred...Sink required for Class
AB
Load
Impedance
(speaker)
4
Ohms
n/a
Nominal
Z-curve required
Rated Output Power
100
Watts
1 input driven
Peak power
THD @ Rated (RMS)
Power
0.3
%
1
22k filter
50 Watts
THD @ 1 Watt
0.1
%
0.5
22k filter
DC Offset
10
mV-DC
20
@ Speaker Outputs
Damping factor
50
DF
40
Measured at amplifier board
Measure at amp board THD < 0.1% 50 Watts
@ 50Hz
Input Sensitivity
Input Frequency
Input Frequency
40
Hz
50
Nominal Freq.
Line input
100
mVrms
±
2dB
To Rated power/Vol @ Max
Single input driven Un-Balanced GND
Zo=600
Speaker/Hi Level Input
2.6
Vrms
±
2dB
To Rated power/Vol @ Max
Single input driven Un-Balanced GND
Zo=600
Signal to Noise
SNR-A-Weighted
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
2
Volume @max, using DVM or A/P (BW=20 KHz)
Residual Noise Floor
1.5
mVrms(max)
2
Volume @max, w/ A/P Swept Bandpass
Measurement (Line freq.+ harmonics)
(BW=20 Khz)
Input Impedance
Line Input
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
Speaker in LP 2nd order
variable
50-150
Hz
±
10
-3db Point
Subsonic filter (HPF)
2nd order
25
Hz
Speaker out HP filter
Left & Rigth
Left & Rigth
200
Hz
±
10
Speaker input - Spkr out 4 Ohms
Left & Rigth
100
Hz
±
10
Speaker input - Spkr out 8 Ohms
4
Amplifier/Subwoofer
ARC SUB10/DS-10
