JBL PowerBass PB10 User manual

PowerBassSeries
PB10 Subwoofer
PRELIMINARY
SERVICE MANUAL
JBL Incorporated, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797

- CONTENTS -
BASIC SPECIFICATIONS ……………………….…….……………..……………..2
DETAILED PB10 SPECIFICATIONS…………………….……….……..……………....3
CONNECTIONS…………………………………………………..……………..………..4
OPERATION………………………………….……………………………………..…….8
TROUBLESHOOTING…………………….…………….………………..….……..…….9
ELECTRICAL PARTS LIST ……………….…………..…………..……………….…10
MECHANICAL/PACKING PARTS LIST……………….……..……..……………….…14
PCB DRAWINGS……………….…………..……………….………..….………………15
SCHEMATICS ………..……………………..………………...…….………………..18
1

GENERAL SPECIFICATIONS PB10 Subwoofer
Output Power 150 watts RMS
Driver 10" Woofer
Frequency Response 27Hz – to Low Pass Frequency setting
Inputs Line Level (option: LFE); Speaker Level
Outputs Speaker level fixed frequency 150Hz
Low-Pass Frequency Variable from 50Hz – 150Hz
High-Pass Frequency 150Hz when using Speaker Level Output
Dimensions (H x W x D) 14" x 14" x 15"
356mm x 356mm x 381mm
(with feet) 16" x 14" x 15"
406mm x 356mm x 381mm
Weight 35 lb/15.9kg
Refinements may be made on occasion to existing products without notice but will always meet or exceed original
specifications unless otherwise stated.
PowerBass is a registered trademark of JBL Incorporated.
2

JBL PB 10 150W Powered Sub Amp
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 Specification Unit QA Test Limits Conditions Notes
Amp Section
Type (Class AB, D, other) Dn/a n/a Class D Preferred...Sink required for Class AB
Load Impedance (speaker) 4Ohms n/a Nominal Z-curve required
Rated Output Power 150 Watts 70 1 input driven
THD @ Rated Power 0.3 %122k filter 75 Watts
THD @ 1 Watt 0.1 %0.5 22k filter
DC Offset 10 mV-DC 20 @ Speaker Outputs
Damping factor 50 DF 35 Measured at the amplifier board THD < 0.1% 75
Watts @ 50Hz
Input Sensitivity
Input Frequency 50 Hz 50 Nominal Freq.
L&R 128 mVrms ±2dB To 75 Watts Single input driven LP defeat switch OFF
LFE 128 mVrms ±2dB To 75 Watts LP defeat switch ON- Single input driven
Speaker/Hi Level Input 1.28 Vrms ±2dB To 75 Watts Single input driven
Signal to Noise
SNR-A-Weighted 100 dBA 75 relative to rated power A-Weighting filter
SNR-unweighted 80 dBr 80 relative to rated power 22k filter
SNR rel. 1W-unweighted 65 dBr 60 relative to 1W Output 22k filter
Residual Noise Floor 1mVrms 2Volume @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=20Khz)
Input Impedance Line Input 20K ohms n/a Nominal
Speaker/Hi Level Input 4.7K ohms n/a Nominal
Filters
Speaker in LP 2nd order variable
60-150 Hz ± 10
Subsonic filter (HPF) fixed 6th order
Fixed
LFE Low pass 2nd order fixed
200>LP<1K Hz Single input driven+E106+E74
Speaker out HP filter
Left & Right 200 Hz ± 10 Speaker input - Spkr out 4 Ohms
Left & Right 100 Hz ± 10 Speaker input - Spkr out 8 Ohms
Limiter
THD at Max. Output Power n/a n/a functional Maximum Output Power Maximum THD as a result of limiting.
Signal Sensing (ATO)
Auto-Turn-On (yes/no) YES functional Auto - on selection switch in Auto
ATO Input test frequency 50 Hz functional "
ATO Level LFE Input 4mV functional "
ATO Level Speaker in 50 mV functional "
ATO Turn-on time 5ms functional
Auto Mute/ Turn-OFF Time 15 minutes 17
Power on Delay time 3sec. 4AC Power Applied
Transients/Pops
ATO Transient 5mV-peak n/a @ Speaker Outputs
Turn-on Transient 50 mV-peak 2v-pp @ Speaker Outputs AC Line cycled from OFF to ON
Turn-off Transient 50 mV-peak 2v-pp @ Speaker Outputs AC Line cycled from ON to OFF
Efficiency 65 %64 Nominal Line voltage 120 VAC / 230 VAC
Stand-by Input Power 15 Watts 18 @ nom. line voltage 0
Power Cons. @ rated power 115 Watts 120 @ nom. line voltage 75 Watts @ 4 Ohms nominal line voltage
Protection
Short Circuit Protection YES functional Direct short at output
Thermal Protection YES functional @1/8 max unclipped Power
DC Offset Protection YES -DC present at Speaker Out leads
Line Fuse Rating US version Amps 1.5 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

2
1. Read Instructions. All the safety and
operating instructions should be read before
the product is operated.
2. Retain Instructions. The safety and
operating instructions should be retained
for future reference.
3. Heed Warnings. All warnings on the
product and in the operating instructions
should be adhered to.
4. Follow Instructions. All operating and use
instructions should be followed.
5. Cleaning. Unplug this product from the
wall outlet before cleaning. Do not use
liquid cleaners or aerosol cleaners. Use a
damp cloth for cleaning.
6. Attachments. Do not use attachments not
recommended by the product manufacturer,
as they may cause hazards.
7. Water and Moisture. Donot use this
product near water – for example, near a
bathtub, wash bowl, kitchen sink or laundry
tub; in a wet basement; or near a swimming
pool; and the like.
8. Accessories. Do not place this product on
an unstable cart, stand, tripod, bracket, or
table. The product may fall, causing serious
injury to a child or adult, and serious
damage to the product. Use only with a cart,
stand, tripod, bracket, or table recommended
by the manufacturer, or sold with the
product. Any mounting of the product should
follow the manufacturer’s instructions, and
should use a mounting accessory
recommended by the manufacturer.
9. A Product and Cart Combination Should
Be Moved with Care. Quick stops, excessive
force, and uneven surfaces may cause the
product and cart combination to overturn.
10. Ventilation. Slots and openings in the
cabinet are provided for ventilation and to
ensure reliable operation of the product and
to protect it from overheating, and these
openings must not be blocked or covered.
The openings should never be blocked by
placing the product on a bed, sofa, rug, or
other similar surface. This product should
not be placed in a built-in installation such
as a bookcase or rack unless proper
ventilation is provided or the manufacturer’s
instructions have been adhered to.
11. Power Sources. This product should be
operated only from the type of power source
indicated on the marking label. If you are
not sure of the type of power supply to your
home, consult your product dealer or local
power company. For products intended to
operate from battery power, or other
sources, refer to the operating instructions.
12. Grounding or Polarization. This product
may be equipped with a polarized alter-
nating-current line plug (a plug having one
blade wider than the other). This plug will fit
into the power outlet only one way. This is a
safety feature. If you are unable to insert the
plug fully into the outlet, try reversing the
plug. If the plug should still fail to fit, contact
your electrician to replace your obsolete
outlet. Do not defeat the safety purpose of
the polarized plug.
13. Power-Cord Protection. Power-supply
cords should be routed so that they are not
likely to be walked on or pinched by items
placed upon or against them, paying
particular attention to cords at plugs,
convenience receptacles, and the point
where they exit from the product.
14. Nonuse Periods. The power cord of the
product should be unplugged from the outlet
when left unused for long periods of time.
15. Outdoor Antenna Grounding. If an outside
antenna or cable system is connected to the
product, be sure the antenna or cable
system is grounded so as to provide some
protection against voltage surges and built-
up static charges. Article 810 of the National
Electrical Code, ANSI/NFPA 70, provides
information with regard to proper grounding
of the mast and supporting structure,
grounding of the lead-in wire to an antenna
discharge unit, size of grounding conductors ,
location of antenna-discharge unit,
connection to grounding electrodes, and
requirements for the grounding electrode.
See Figure A.
16. Lightning. For added protection for this
product during a lightning storm, or when
it is left unattended and unused for long
periods of time, unplug it from the wall outlet
and disconnect the antenna or cable system.
This will prevent damage to the product due
to lightning and power-line surges.
17. Power Lines. An outside antenna system
should not be located in the vicinity of
overhead power lines or other electric light
or power circuits, or where it can fall into
such power lines or circuits. When installing
an outside antenna system, extreme care
should be taken to keep from touching such
power lines or circuits, as contact with them
might be fatal.
18. Overloading. Do not overload wall
outlets, extension cords, or integral
convenience receptacles, as this can
result in a risk of fire or electric shock.
19. Object and Liquid Entry. Never push
objects of any kind into this product through
openings, as they may touch dangerous
voltage points or short-out parts that could
result in a fire or electric shock. Never spill
liquid of any kind on the product.
20. Servicing. Do not attempt to service this
product yourself, as opening or removing
covers may expose you to dangerous
voltage or other hazards. Refer all servicing
to qualified service personnel.
21. Damage Requiring Service. Unplug this
product from the wall outlet and refer ser-
vicing to qualified service personnel under
the following conditions:
a. The power-supply cord or the plug has
been damaged; or
b. Objects have fallen onto, or liquid has
been spilled into, the product; or
c. The product has been exposed to rain or
water; or
d. The product does not operate normally
when following the operating instructions.
Adjust only those controls that are covered
by the operating instructions, as an improper
adjustment of other controls may result in
damage and will often require extensive
work by a qualified technician to restore the
product to its normal operation; or
e. The product has been dropped or
damaged in any way; or
f. The product exhibits a distinct change
in performance – this indicates a need for
service.
22. Replacement Parts. When replacement
parts are required, be sure the service
technician has used replacement parts
specified by the manufacturer or that have
the same characteristics as the original part.
Unauthorized substitutions may result in fire,
electric shock or other hazards.
23. Safety Check. Upon completion of any
service or repairs to this product, ask the
service technician to perform safety checks
to determine that the product is in proper
operating condition.
24. Wall or Ceiling Mounting. The product
should be mounted to a wall or ceiling only
as recommended by the manufacturer.
25. Heat. The product should be situated
away from heat sources such as radiators,
heat registers, stoves, or other products
(including amplifiers) that produce heat.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: To prevent electric shock,
do not remove the grounding plug
on the power cord, or use any plug
or extension cord that does not have
a grounding plug provided.
Make certain that the
AC outlet is properly grounded.
Do not use an adapter plug
with this product.
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
Antenna Lead-In Wire

Ground Clamp

Antenna Discharge Unit (NEC Section 810-20)

Grounding Conductors (NEC Section 810-21)

Electric Service Equipment

Ground Clamps

Power Service Grounding Electrode System
(NEC Art 250, Part H)
Figure A.
Example of Antenna
Grounding as per National
ElectricalCode, ANSI/NFPA 70
READ THIS! Important Safety Precautions! SPEAKER PLACEMENT
Part No. JBLULB 10/99
• As a general rule, bass
response increases as a
subwoofer is placed closer
to a wall. Therefore, bass
output is maximized when
the subwoofer is placed in
a corner.
• It is also recommended that
the subwoofer be
positioned along the
same wall as the front
loudspeakers.
Low-frequency sounds are
normally omnidirectional,
meaning the listener can’t tell
where they are generated
from. However, frequencies
between 75Hz – 150Hz can be
localized, especially at higher
volume levels. Positioning
your subwoofer as recom-
mended will provide the
most natural soundstage
and imaging from your
loudspeaker system.
Remember that these are just
guidelines. Since every
listening room is different,
JBL strongly recommends
experimenting with the
positioning of your subwoofer
to obtain the most pleasing
results in your room. One
technique that can help you
find the ideal subwoofer
location is to temporarily
place the subwoofer near the
main listening location. Then
move around the room and
determine where you hear
the most pleasing bass
performance. This would then
be the ideal location for the
subwoofer.
When we designed the
PB10 and PB12 powered
subwoofers, our goal was
to offer the user the best
possible performance
combined with the most
flexible and complete
installation options. Please
look over the following three
examples to determine which
description best matches your
system and follow the
corresponding hookup
instructions.
To use the binding-post
speaker terminals with bare
wire, unscrew the collar until
the hole through the center
post is visible under the collar.
Insert the bare end of the wire
through the hole in the post,
then screw the collar back
down until the connection is
tight. The holes in the center
of the collars are intended for
banana-type connectors.
Dolby* Pro Logic* (Non-Digital) – Speaker Level
Use this installation method
for Dolby Pro Logic appli-
cations (not Dolby Digital,
DTS®or other digital
processing), where the
receiver/processor does not
have a subwoofer output or
a volume-controlled preamp
(line-) level output:
Connect your receiver or
amplifier’s front left and right
speaker terminals to the left
and right terminals on the
subwoofer that are marked
“High Level In.” Connect the
left and right terminals on the
subwoofer that are marked
“High Level Out” to the cor-
responding terminals on the
back of your front left and
right speakers.
Connect your receiver or
amplifier’s center, left and
right surround-speaker
terminals to the corre-
sponding terminals on the
back of your center, left and
right surround speakers.
SPEAKER CONNECTION
Right Front
Left Front Center + –
+ – + –
Subwoofer
Right SurroundLeft Surround
+ – + –
+ –
+ –
Left Front Center
+ –
Left Surround
Right Front
+ –
Right Surround
+ –
Receiver
L
R
HIGH
LEVEL
IN
L
R
L
R
HIGH
LEVEL
OUT`
+ –

2
1. Read Instructions. All the safety and
operating instructions should be read before
the product is operated.
2. Retain Instructions. The safety and
operating instructions should be retained
for future reference.
3. Heed Warnings. All warnings on the
product and in the operating instructions
should be adhered to.
4. Follow Instructions. All operating and use
instructions should be followed.
5. Cleaning. Unplug this product from the
wall outlet before cleaning. Do not use
liquid cleaners or aerosol cleaners. Use a
damp cloth for cleaning.
6. Attachments. Do not use attachments not
recommended by the product manufacturer,
as they may cause hazards.
7. Water and Moisture. Donot use this
product near water – for example, near a
bathtub, wash bowl, kitchen sink or laundry
tub; in a wet basement; or near a swimming
pool; and the like.
8. Accessories. Do not place this product on
an unstable cart, stand, tripod, bracket, or
table. The product may fall, causing serious
injury to a child or adult, and serious
damage to the product. Use only with a cart,
stand, tripod, bracket, or table recommended
by the manufacturer, or sold with the
product. Any mounting of the product should
follow the manufacturer’s instructions, and
should use a mounting accessory
recommended by the manufacturer.
9. A Product and Cart Combination Should
Be Moved with Care. Quick stops, excessive
force, and uneven surfaces may cause the
product and cart combination to overturn.
10. Ventilation. Slots and openings in the
cabinet are provided for ventilation and to
ensure reliable operation of the product and
to protect it from overheating, and these
openings must not be blocked or covered.
The openings should never be blocked by
placing the product on a bed, sofa, rug, or
other similar surface. This product should
not be placed in a built-in installation such
as a bookcase or rack unless proper
ventilation is provided or the manufacturer’s
instructions have been adhered to.
11. Power Sources. This product should be
operated only from the type of power source
indicated on the marking label. If you are
not sure of the type of power supply to your
home, consult your product dealer or local
power company. For products intended to
operate from battery power, or other
sources, refer to the operating instructions.
12. Grounding or Polarization. This product
may be equipped with a polarized alter-
nating-current line plug (a plug having one
blade wider than the other). This plug will fit
into the power outlet only one way. This is a
safety feature. If you are unable to insert the
plug fully into the outlet, try reversing the
plug. If the plug should still fail to fit, contact
your electrician to replace your obsolete
outlet. Do not defeat the safety purpose of
the polarized plug.
13. Power-Cord Protection. Power-supply
cords should be routed so that they are not
likely to be walked on or pinched by items
placed upon or against them, paying
particular attention to cords at plugs,
convenience receptacles, and the point
where they exit from the product.
14. Nonuse Periods. The power cord of the
product should be unplugged from the outlet
when left unused for long periods of time.
15. Outdoor Antenna Grounding. If an outside
antenna or cable system is connected to the
product, be sure the antenna or cable
system is grounded so as to provide some
protection against voltage surges and built-
up static charges. Article 810 of the National
Electrical Code, ANSI/NFPA 70, provides
information with regard to proper grounding
of the mast and supporting structure,
grounding of the lead-in wire to an antenna
discharge unit, size of grounding conductors ,
location of antenna-discharge unit,
connection to grounding electrodes, and
requirements for the grounding electrode.
See Figure A.
16. Lightning. For added protection for this
product during a lightning storm, or when
it is left unattended and unused for long
periods of time, unplug it from the wall outlet
and disconnect the antenna or cable system.
This will prevent damage to the product due
to lightning and power-line surges.
17. Power Lines. An outside antenna system
should not be located in the vicinity of
overhead power lines or other electric light
or power circuits, or where it can fall into
such power lines or circuits. When installing
an outside antenna system, extreme care
should be taken to keep from touching such
power lines or circuits, as contact with them
might be fatal.
18. Overloading. Do not overload wall
outlets, extension cords, or integral
convenience receptacles, as this can
result in a risk of fire or electric shock.
19. Object and Liquid Entry. Never push
objects of any kind into this product through
openings, as they may touch dangerous
voltage points or short-out parts that could
result in a fire or electric shock. Never spill
liquid of any kind on the product.
20. Servicing. Do not attempt to service this
product yourself, as opening or removing
covers may expose you to dangerous
voltage or other hazards. Refer all servicing
to qualified service personnel.
21. Damage Requiring Service. Unplug this
product from the wall outlet and refer ser-
vicing to qualified service personnel under
the following conditions:
a. The power-supply cord or the plug has
been damaged; or
b. Objects have fallen onto, or liquid has
been spilled into, the product; or
c. The product has been exposed to rain or
water; or
d. The product does not operate normally
when following the operating instructions.
Adjust only those controls that are covered
by the operating instructions, as an improper
adjustment of other controls may result in
damage and will often require extensive
work by a qualified technician to restore the
product to its normal operation; or
e. The product has been dropped or
damaged in any way; or
f. The product exhibits a distinct change
in performance – this indicates a need for
service.
22. Replacement Parts. When replacement
parts are required, be sure the service
technician has used replacement parts
specified by the manufacturer or that have
the same characteristics as the original part.
Unauthorized substitutions may result in fire,
electric shock or other hazards.
23. Safety Check. Upon completion of any
service or repairs to this product, ask the
service technician to perform safety checks
to determine that the product is in proper
operating condition.
24. Wall or Ceiling Mounting. The product
should be mounted to a wall or ceiling only
as recommended by the manufacturer.
25. Heat. The product should be situated
away from heat sources such as radiators,
heat registers, stoves, or other products
(including amplifiers) that produce heat.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: To prevent electric shock,
do not remove the grounding plug
on the power cord, or use any plug
or extension cord that does not have
a grounding plug provided.
Make certain that the
AC outlet is properly grounded.
Do not use an adapter plug
with this product.
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
Antenna Lead-In Wire

Ground Clamp

Antenna Discharge Unit (NEC Section 810-20)

Grounding Conductors (NEC Section 810-21)

Electric Service Equipment

Ground Clamps

Power Service Grounding Electrode System
(NEC Art 250, Part H)
Figure A.
Example of Antenna
Grounding as per National
ElectricalCode, ANSI/NFPA 70
READ THIS! Important Safety Precautions! SPEAKER PLACEMENT
Part No. JBLULB 10/99
• As a general rule, bass
response increases as a
subwoofer is placed closer
to a wall. Therefore, bass
output is maximized when
the subwoofer is placed in
a corner.
• It is also recommended that
the subwoofer be
positioned along the
same wall as the front
loudspeakers.
Low-frequency sounds are
normally omnidirectional,
meaning the listener can’t tell
where they are generated
from. However, frequencies
between 75Hz – 150Hz can be
localized, especially at higher
volume levels. Positioning
your subwoofer as recom-
mended will provide the
most natural soundstage
and imaging from your
loudspeaker system.
Remember that these are just
guidelines. Since every
listening room is different,
JBL strongly recommends
experimenting with the
positioning of your subwoofer
to obtain the most pleasing
results in your room. One
technique that can help you
find the ideal subwoofer
location is to temporarily
place the subwoofer near the
main listening location. Then
move around the room and
determine where you hear
the most pleasing bass
performance. This would then
be the ideal location for the
subwoofer.
When we designed the
PB10 and PB12 powered
subwoofers, our goal was
to offer the user the best
possible performance
combined with the most
flexible and complete
installation options. Please
look over the following three
examples to determine which
description best matches your
system and follow the
corresponding hookup
instructions.
To use the binding-post
speaker terminals with bare
wire, unscrew the collar until
the hole through the center
post is visible under the collar.
Insert the bare end of the wire
through the hole in the post,
then screw the collar back
down until the connection is
tight. The holes in the center
of the collars are intended for
banana-type connectors.
Dolby* Pro Logic* (Non-Digital) – Speaker Level
Use this installation method
for Dolby Pro Logic appli-
cations (not Dolby Digital,
DTS®or other digital
processing), where the
receiver/processor does not
have a subwoofer output or
a volume-controlled preamp
(line-) level output:
Connect your receiver or
amplifier’s front left and right
speaker terminals to the left
and right terminals on the
subwoofer that are marked
“High Level In.” Connect the
left and right terminals on the
subwoofer that are marked
“High Level Out” to the cor-
responding terminals on the
back of your front left and
right speakers.
Connect your receiver or
amplifier’s center, left and
right surround-speaker
terminals to the corre-
sponding terminals on the
back of your center, left and
right surround speakers.
SPEAKER CONNECTION
Right Front
Left Front Center + –
+ – + –
Subwoofer
Right SurroundLeft Surround
+ – + –
+ –
+ –
Left Front Center
+ –
Left Surround
Right Front
+ –
Right Surround
+ –
Receiver
L
R
HIGH
LEVEL
IN
L
R
L
R
HIGH
LEVEL
OUT`
+ –

5
Dolby Pro Logic (Non-Digital) – Line Level
Use this installation method
for Dolby Pro Logic appli-
cations (not Dolby Digital, DTS
or other digital processing),
where the receiver/processor
is equipped with a subwoofer
output or a volume-controlled
preamp (line-) level output:
Use RCA-type patch cords
to connect the line-level
subwoofer outputs on your
receiver or amplifier to the
line-level inputs on the
subwoofer. IMPORTANT:
Make sure that the LFE toggle
switch on the subwoofer is in
the “Normal” position. Do not
use the “LFE” position with
Dolby Pro Logic-only
processors.
Note: If your receiver or
amplifier only has one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right line-level input
on the subwoofer. It makes no
difference which jack you
choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure your receiver or
processor is configured cor-
rectly: Make sure that the sub-
woofer is configured as “On.”
Note for advanced users: If
your receiver/processor has
a built-in low-pass crossover
filter for the subwoofer output,
then the LFE switch should be
set to the “LFE” position to
bypass the subwoofer’s
internal crossover.
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L R
LFE NORMAL
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
50Hz
0º 180º
150Hz
Subwoofer
Out
RECEIVER
L
R
For LFE use L or R
L R
Dolby Digital or DTS (or Other Digital Surround Mode) Connection
Use this installation method
for Dolby Digital, DTS or other
digital surround processors:
IMPORTANT: Make sure that
the LFE toggle switch on the
subwoofer is in the “LFE”
position. Use the line-level
input jacks for the Low-
Frequency Effects channel.
Connect these jacks to the
LFE output or subwoofer
output on your receiver or
amplifier.
Note: If your receiver or
amplifier only has one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right line-level input
on the subwoofer. It makes no
difference which jack you
choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure that you have
configured your surround-
sound processor for
“Subwoofer On” or “LFE On.”
The front left, front right,
center and rear speakers
should be set to “Small” or
“Large” depending on their
size and frequency response.
Consult your receiver’s or
processor’s owner’s manual.
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L R
LFE NORMAL
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
50Hz
0º 180º
150Hz
Subwoofer
Output/LFE
RECEIVER/PREAMPLIFIER
L
R
For LFE use L or R

Dolby Pro Logic (Non-Digital) – Line Level
Use this installation method
for Dolby Pro Logic appli-
cations (not Dolby Digital, DTS
or other digital processing),
where the receiver/processor
is equipped with a subwoofer
output or a volume-controlled
preamp (line-) level output:
Use RCA-type patch cords
to connect the line-level
subwoofer outputs on your
receiver or amplifier to the
line-level inputs on the
subwoofer. IMPORTANT:
Make sure that the LFE toggle
switch on the subwoofer is in
the “Normal” position. Do not
use the “LFE” position with
Dolby Pro Logic-only
processors.
Note: If your receiver or
amplifier only has one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right line-level input
on the subwoofer. It makes no
difference which jack you
choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure your receiver or
processor is configured cor-
rectly: Make sure that the sub-
woofer is configured as “On.”
Note for advanced users: If
your receiver/processor has
a built-in low-pass crossover
filter for the subwoofer output,
then the LFE switch should be
set to the “LFE” position to
bypass the subwoofer’s
internal crossover.
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L R
LFE NORMAL
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
50Hz
0º 180º
150Hz
Subwoofer
Out
RECEIVER
L
R
For LFE use L or R
L R
Dolby Digital or DTS (or Other Digital Surround Mode) Connection
Use this installation method
for Dolby Digital, DTS or other
digital surround processors:
IMPORTANT: Make sure that
the LFE toggle switch on the
subwoofer is in the “LFE”
position. Use the line-level
input jacks for the Low-
Frequency Effects channel.
Connect these jacks to the
LFE output or subwoofer
output on your receiver or
amplifier.
Note: If your receiver or
amplifier only has one
subwoofer output jack,
then you may connect the
subwoofer output on your
receiver/preamplifier to either
the left or right line-level input
on the subwoofer. It makes no
difference which jack you
choose.
Connect each speaker to the
corresponding speaker
terminals on your receiver or
amplifier.
Make sure that you have
configured your surround-
sound processor for
“Subwoofer On” or “LFE On.”
The front left, front right,
center and rear speakers
should be set to “Small” or
“Large” depending on their
size and frequency response.
Consult your receiver’s or
processor’s owner’s manual.
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L R
LFE NORMAL
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
50Hz
0º 180º
150Hz
Subwoofer
Output/LFE
RECEIVER/PREAMPLIFIER
L
R
For LFE use L or R
4

7
TROUBLESHOOTING
OPERATION
When the unit is plugged in
and (for the PB12 only) the
power switch is on and no
signal is received, the LEDs on
the front of the unit will turn
red. When a signal is present,
the LEDs will turn green.
Note: It will take several
minutes for the LEDs to turn
from green to red after the
input signal to the subwoofer
is removed. Due to JBL’s
unique, high-output, high-
efficiency amplifier design,
power consumption is minimal
when the subwoofer is not
receiving a signal. Of course,
the PB12 subwoofer can be
turned off, whenever desired.
The PB10 must be unplugged
if you do not wish to leave it in
auto (standby) mode.
The subwoofer Level Control
adjusts the volume of the
subwoofer relative to the rest
of the system. Proper level
adjustment depends on
several variables such as
room size, subwoofer
placement, type of main
speakers and listener position.
Adjust the subwoofer level so
that the volume of the bass
information is pleasing to you.
Crossover Adjustments
The Crossover Frequency
Control determines the highest
frequency at which the
subwoofer reproduces sounds.
If your main speakers can
comfortably reproduce some
low-frequency sounds, set this
control to a lower frequency
setting, between 50Hz – 100Hz.
This will concentrate the
subwoofer’s efforts on the
ultradeep bass sounds
required by today’s films and
music. If you are using smaller
bookshelf speakers that do not
extend to the lower bass
frequencies, set the low-pass
crossover control to a higher
setting, between 120Hz –
150Hz. This control is not used
when the LFE switch is in the
“LFE” position.
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L
R
L R
For LFE use L or R
LFE NORMAL
PowerBass PB10
PowerBass PB10
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120V
60Hz, 160W
50Hz
0º 180º
150Hz
POWER
PowerBass PB12
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120V
60Hz, 160W
ON OFF
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L
R
L R
For LFE use L or R
LFE NORMAL
PowerBass PB12
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
50Hz
0º 180º
150Hz
If you used the high-level
(speaker) inputs and there
is no sound from any of the
speakers:
• Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into
an active electrical outlet
and is switched on.
• Check all wires and
connections between
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.
If there is low (or no) bass
output:
• Make sure the connections
to the left and right “Speaker
Inputs” have the correct
polarity (+ and –).
• Make sure that the
subwoofer is plugged into an
active electrical outlet and
(PB12 only) switched on.
• Adjust the crossover point.
• Flip the Phase Control
switch to the opposite
position.
• If you are using a Dolby
Digital/DTS receiver or
processor, make sure that the
subwoofer adjustments on
the receiver/processor are
set up correctly.
• Slowly turn the Level
Control clockwise until you
begin to hear the desired
amount of bass.
If you used the line-level
inputs and there is no sound
from the subwoofer:
• Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into an
active electrical outlet and is
switched on.
• Check all wires and con-
nections between receiver/
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.
• Slowly turn the Level
Control clockwise until you
begin to hear the desired
amount of bass.
• Make sure that you have
configured your receiver/
processor so that the
subwoofer/LFE output is on.
Phase Control
The Phase Control determines
whether the subwoofer’s
piston-like action moves in
and out in phase with the
main speakers or opposite
the main speakers. There is
no correct or incorrect
setting. Proper phase
adjustment depends on
several variables such as
subwoofer placement and
listener position. Adjust the
phase switch to maximize
bass output at the listening
position.
Remember, every system,
room and listener is different.
There are no right or wrong
settings; this switch offers the
added flexibility to adjust your
subwoofer for optimum
performance for your specific
listening conditions without
having to move your
speakers. If at some time
in the future you happen to
rearrange your listening room
and move your speakers, you
should experiment with the
phase switch in both
positions, and leave it in
the position that maximizes
bass performance.
Level Control
Power

67
TROUBLESHOOTING
OPERATION
When the unit is plugged in
and (for the PB12 only) the
power switch is on and no
signal is received, the LEDs on
the front of the unit will turn
red. When a signal is present,
the LEDs will turn green.
Note: It will take several
minutes for the LEDs to turn
from green to red after the
input signal to the subwoofer
is removed. Due to JBL’s
unique, high-output, high-
efficiency amplifier design,
power consumption is minimal
when the subwoofer is not
receiving a signal. Of course,
the PB12 subwoofer can be
turned off, whenever desired.
The PB10 must be unplugged
if you do not wish to leave it in
auto (standby) mode.
The subwoofer Level Control
adjusts the volume of the
subwoofer relative to the rest
of the system. Proper level
adjustment depends on
several variables such as
room size, subwoofer
placement, type of main
speakers and listener position.
Adjust the subwoofer level so
that the volume of the bass
information is pleasing to you.
Crossover Adjustments
The Crossover Frequency
Control determines the highest
frequency at which the
subwoofer reproduces sounds.
If your main speakers can
comfortably reproduce some
low-frequency sounds, set this
control to a lower frequency
setting, between 50Hz – 100Hz.
This will concentrate the
subwoofer’s efforts on the
ultradeep bass sounds
required by today’s films and
music. If you are using smaller
bookshelf speakers that do not
extend to the lower bass
frequencies, set the low-pass
crossover control to a higher
setting, between 120Hz –
150Hz. This control is not used
when the LFE switch is in the
“LFE” position.
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L
R
L R
For LFE use L or R
LFE NORMAL
PowerBass PB10
PowerBass PB10
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120V
60Hz, 160W
50Hz
0º 180º
150Hz
POWER
PowerBass PB12
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120V
60Hz, 160W
ON OFF
CROSSOVER
FREQUENCY
LEVEL
LINE LEVEL IN
PHASE
Min Max
L
R
L R
For LFE use L or R
LFE NORMAL
PowerBass PB12
HIGH
LEVEL
IN
L
R
HIGH
LEVEL
OUT
+ –
50Hz
0º 180º
150Hz
If you used the high-level
(speaker) inputs and there
is no sound from any of the
speakers:
• Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into
an active electrical outlet
and is switched on.
• Check all wires and
connections between
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.
If there is low (or no) bass
output:
• Make sure the connections
to the left and right “Speaker
Inputs” have the correct
polarity (+ and –).
• Make sure that the
subwoofer is plugged into an
active electrical outlet and
(PB12 only) switched on.
• Adjust the crossover point.
• Flip the Phase Control
switch to the opposite
position.
• If you are using a Dolby
Digital/DTS receiver or
processor, make sure that the
subwoofer adjustments on
the receiver/processor are
set up correctly.
• Slowly turn the Level
Control clockwise until you
begin to hear the desired
amount of bass.
If you used the line-level
inputs and there is no sound
from the subwoofer:
• Check that receiver/amplifier
is on and a source is playing.
• Check that powered
subwoofer is plugged into an
active electrical outlet and is
switched on.
• Check all wires and con-
nections between receiver/
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.
• Slowly turn the Level
Control clockwise until you
begin to hear the desired
amount of bass.
• Make sure that you have
configured your receiver/
processor so that the
subwoofer/LFE output is on.
Phase Control
The Phase Control determines
whether the subwoofer’s
piston-like action moves in
and out in phase with the
main speakers or opposite
the main speakers. There is
no correct or incorrect
setting. Proper phase
adjustment depends on
several variables such as
subwoofer placement and
listener position. Adjust the
phase switch to maximize
bass output at the listening
position.
Remember, every system,
room and listener is different.
There are no right or wrong
settings; this switch offers the
added flexibility to adjust your
subwoofer for optimum
performance for your specific
listening conditions without
having to move your
speakers. If at some time
in the future you happen to
rearrange your listening room
and move your speakers, you
should experiment with the
phase switch in both
positions, and leave it in
the position that maximizes
bass performance.
Level Control
Power

Electrical Parts List- PB10
PB10 POWER AMP section of PCB Version 6.3.
Part# Designator Description
Semiconductors
60102 U1 TLO64 Quad OpAmp
50100 RS604 6AMP BR RECT
50105 D1 1N4744A 15V 1w Zener
50112 D10 1N5242B 12V .5w Zener
50104 D11 1N4148 Sig Diode
50112 D12 1N5242B 12V .5w Zener
50104 D13 1N4148 Sig Diode
50104 D14 1N4148 Sig Diode
50105 D2 1N4744A 15V 1w Zener
50101 D3 1N5256B 30V .5w Zener
50104 D4 1N4148 Sig Diode
50113 D5 1N4735A 6.2V 1W
50107 D6 1N5234B 6.2V .5w Zener
50104 D7 1N4148 Sig Diode
50104 D8 1N4148 Sig Diode
60157 Q1 2N5457 25V N-chnl FET
60154 Q10 MPSA56 120V PNP 600mA
60154 Q11 MPSA56 120V PNP 600mA
60156 Q12 2N4401 40V NPN 600mA
Capacitors
30706 C1 4700uF 50V +80 / -20 Electrolytic 105C
30712 C10 10uF 100V 0.2 BP/NP Electr DF<.1
30502 C11 100nF 50V 0.2 mono ceramic
30706 C2 4700uF 50V +80 / -20 Electrolytic 105C
C20 NOT USED
30502 C21 100nF 50V 0.2 mono ceramic
30502 C22 100nF 50V 0.2 mono ceramic
30526 C24 220nF 50V 0.1 mono ceramic
30529 C25 1n5F 50V 0.1 mono ceramic
30508 C26 10nF 50V 0.1 mono ceramic
30513 C27 3n3F 50V 0.1 mono ceramic
30502 C3 100nF 50V 0.2 mono ceramic
30714 C32 10uF 35V +80/-20 Electrolytic
30715 C40 10uF 16V +80/-20 Electrolytic
30716 C41 1uF 16V +80/-20 Electrolytic
30717 C42 100uF 16V +80/-20 Electrolytic
30702 C6 100nF 50V 0.2 mono ceramic
30505 C7A 100nF 100V 0.2 mono ceramic or film
30505 C7B 100nF 100V 0.2 mono ceramic or film
CW,CZ NOT USED
10

Part# Designator Description
Resistors
R100 NOT USED
40105 R10A 0.1R .5W 0.05 metal
40105 R10B 0.1R .5W 0.05 metal
40105 R10C 0.1R .5W 0.05 metal
40420 R11 1k .25W 0.05 carbon
40420 R12 1k .25W 0.05 carbon
40417 R13 47k .25W 0.05 carbon
40718 R14 3k3 .25W 0.05 carbon
40406 R15 100k .25W 0.05 carbon
40719 R1A 2k2 1W 0.05 metal
40719 R1B 2k2 1W 0.05 metal
40719 R1C 2k2 1W 0.05 metal
40405 R21 4K7 .25W 0.05 carbon
40720 R22 42K2 .25W 0.01 metal
40721 R23 237k .25W 0.01 metal
R24 NOT USED
R25 NOT USED
40722 R26 6k8 .25W 0.05 carbon
40723 R27 2k2 2W 0.05 metal
40110 R28 732R 0.5W 0.01 metal
40110 R29 732R 0.5W 0.01 metal
40719 R2A 2k2 1W 0.05 metal
40719 R2B 2k2 1W 0.05 metal
40719 R2C 2k2 1W 0.05 metal
40702 R3 6M8 .25W 0.05 carbon
40723 R30 2k2 2W 0.05 metal
40417 R31 47k .25W 0.05 carbon
40417 R32 47k .25W 0.05 carbon
40427 R33 23k7 .25W 0.01 metal
40724 R34 8k87 .25W 0.01 metal
40725 R4 15k 0.5W 0.01 metal
40420 R40 1k .25W 0.05 carbon
40701 R41 1000k .25W 0.05 carbon
40409 R42 10k .25W 0.05 carbon
40701 R43 1000k .25W 0.05 carbon
40406 R44 100k .25W 0.05 carbon
40415 R45 470K .25W 0.05 carbon
40701 R46 1000k .25W 0.05 carbon
40409 R47 10k .25W 0.05 carbon
40409 R48 10k .25W 0.05 carbon
40726 R49 15k .25W 0.05 carbon
40412 R5 33k2 .25W 0.01 metal
40427 R50 2k2 .25W 0.05 carbon
40111 R6 47R .25W 0.05 carbon 11

Part# Designator Description
40728 R7A 5k6 1W 0.05 metal
40728 R7B 5k6 1W 0.05 metal
40728 R7C 5k6 1W 0.05 metal
40729 R8A 4k7 1W 0.05 metal
40729 R8B 4k7 1W 0.05 metal
R9 NOT USED
Miscellaneous
80101 L1 110uH Gapped E-core choke
80102 L2 2.2uH 2.2uH ferrite bead
L3 0-R Jumper
L4 0-R Jumper
80100 CMC 2m2H 5 Amp 0.05 2.2mH choke
60301 MODULE S53 S53AMI amp module
108326 LED Harness MOLEX 2 FEMALE
80135 TRX MCI 5024 100VA Conc Wnd Mtd on Faceplate
50106 On Harness 2 Clr LED T 1 3/4 Type
50106 On Harness 2 Clr LED T 1 3/4 Type
70322 LED PCB socket Male PCB LED socket
80114 3AG FUSE 1.25A SloBlo Glass
70324 0.187" Tabs 70.187" PCB fastons
70323
PCB-mount Fuse Holders
2PCB fuse clips
70325 PB10 faceplate PB10 faceplate
80105 Power cord Power cord
70305 Strain relief Strain relief
PB10 PREAMP section of PCB Version #6.3
Part# Designator Description
Semiconductors
60100 U1 LM324 LM324 op amp
60100 U2 LM324 LM324 op amp
Capacitors
Film Caps may be used in any position EXCEPT C1, C2
30707 C1 200uF 50V 0.2 BP Electrolytic
30526 C10 220nF 50V 0.1 mono ceramic
30514 C11 47nF 50V 0.1 mono ceramic
30504 C12 100n 50V 0.1 mono ceramic
30514 C13 47n 50V 0.1 mono ceramic
30528 C16 220nF 50V 0.05 film
30528 C17 220nF 50V 0.05 film
30100 C18 330pF 50V 0.2 mono ceramic
30100 C19 330pF 50V 0.2 mono ceramic
30707 C2 200uF 50V 0.2 BP Electrolytic 12

Part# Designator Description
30519 C20 100nF 50V 0.2 mono ceramic
30519 C21 100nF 50V 0.2 mono ceramic
30519 C22 100nF 50V 0.2 mono ceramic
30519 C23 100nF 50V 0.2 mono ceramic
30101 C3 220pF 50V 0.2 mono ceramic
C30 NOT USED
30101 C4 220pF 50V 0.2 mono ceramic
30101 C5 220pF 50V 0.2 mono ceramic
30101 C6 220p 50V 0.2 mono ceramic
30527 C7 330nF 50V 0.05 film
30527 C8 330nF 50V 0.05 film
30527 C9 330nF 50V 0.05 film
Resistors
40405 R1 4k7 .25W 0.05 carbon
40409 R10 10k .25W 0.05 carbon
40708 R11 57k6 .25W 0.01 carbon
40454 R12 45k3 .25W 0.01 metal
40412 R13 33k2 .25W 0.01 metal
40709 R14 68k1 .25W 0.01 metal
40710 R15 11k3 .25W 0.01 metal
40711 R16 1k3 .25W 0.01 metal
40712 R17 243k .25W 0.01 metal
40441 R18 13k7 .25W 0.01 metal
40441 R19 13k7 .25W 0.01 metal
40405 R2 4k7 .25W 0.05 carbon
40713 R20 5k6 .25W 0.05 carbon
R21 0r Jumper
40713 R22 5k6 .25W 0.05 carbon
R23 0r Jumper
40109 R24 604r .25W 0.01 metal
40412 R25 33k2 .25W 0.01 metal
40405 R26 4k7 .25W 0.01 metal
40109 R27 604r .25W 0.01 metal
40412 R28 33k2 .25W 0.01 metal
40406 R3 100k .25W 0.05 carbon
40714 R30 14k .25W 0.01 metal
40715 R33 9k09 .25W 0.01 metal
40716 R34 60k4 .25W 0.01 metal
40451 R35 137k .25W 0.01 metal
40406 R4 100k .25W 0.05 carbon
40406 R5 100k .25W 0.05 carbon
40406 R6 100k .25W 0.05 carbon
40717 R8 2k7 .25W 0.05 carbon
40717 R9 2k7 .25W 0.05 carbon
Miscellaneous
108116 HI LEVEL I/O OUT Binding Post
108116 HI LEVEL I/O IN Binding Post
108324
RCA CONNECTOR
DUAL RCA-yellow
40402 LEVEL 5k POT 0.2 Log (A) Pot
40707 Low Pass 20k POT 0.2 Lin (B) Pot.
70150 LFE Defeat SW SPDT mini-Toggle
70150 Phase Switch SW SPDT mini-Toggle
13

MECHANICAL & PACKING PARTS LIST
Part# Description
203400 10” Woofer
203410 Foot
203420 Outer Carton
203430 Owner’s manual 120V
203450 Amplifier complete
14

V
ers63.gbl (Board layer 1) Scale=1.20 Wed May 17 08:26:14 2000

V
ers63.gtl (Board layer 1) Scale=1.20 Wed May 17 08:36:44 2000

V
ers63.gto (Board layer 1) Scale=1.36 Wed May 17 08:38:34 2000

1234
A
B
C
D
4
321
D
C
B
ATitle
Number RevisionSize
Tabloid
Date: 20-Apr-2000 Sheet of
File: T:\PB10 sch Folder\..\PB10 preamp Rev5.schDrawn By:
1
2
3
4
5
6
Un-designated Connector
NOT USED
U1
U2 U1
LM324
U1
LM324
R16
1k3
C9
330nF
C8
330nF
C7
330nF
R15
11k3
R17
243k
R14
68k1
R35
137k
R13
33k2
R9
2k7 C5
220pF
C3 220pF
C2
200uF
C1
200uF
8
10
9
R27
604r
R34
60k4
R24
604r
R28 33k2
C19 330pF
C18 330pF
R10
10k
R11
57k6 C6
220p
R In
GND
L In
R6
R5
R4
R3
100k
R8
2k7
C4
220pF
Phase Switch
SW SPDT
LEVEL
5k POT R12
45k3
U2
U2
LM324
C17
220nF
C16
220nF
R30
14k
R26
4k7
R33
9k09
1
3
2
2
3
1
R18
13k7
R20
5k6
U1
LO PASS CONTROL 1
20k POT
LO PASS CONTROL 2
20k POT
U2
C10
220nF
C12
100n
C13
47n
C11
47nF
R21
0r Jumper
R19
13k7
R22
5k6
R23
0r Jumper
LoPass Defeat Sw.
SW SPDT
LO PASS CONTROL 3
NOT USED
LO PASS CONTROL 4
NOT USED
13
12
14
13
14
12
3
2
17
6
5
6
5
7
8
10
9
1
3
2
1
2
3
1
2
3
4
5
6
7
8
9
11
12
10
R1
4k7
R2
4k7
+15V
-15V
C21
100nF
C20
100nF
C23
100nF
C22
100nF
+15V
GND
GND
SIG
-15V
mute
To/From PWRAMP
R25 33k2
B10 PREAMP (6.3pcb)
5
11
MS/LL
3rd Order Hi-Pass
2nd Order LO-PASS
2nd Order LO-PASS: (Moved up 1 octave)
GAIN STAGE
RCA CONNECTOR
DUALRCA
1
2
3
REMOTE Pot
NOT USED
R
L
Binding Post
IN
R
L
OUT
C30
NOT USED
2nd Order Hi-Pass
To Pin 11 U1/U2
To Pin 4 U1/U2
+15V
-15V
AMI
+15V
-15V
From PwrAmp
From PwrAmp
NOT USED
1
2
LED1
NOT USED
1
2
Led Harness
NOT USED
LED 2
NOT USED

12345678910
A
B
C
D
E
F
10
987654321
F
E
D
C
B
ATitle
Number RevisionSize
D
Date: 20-Apr-2000 Sheet of
File: T:\PB10 sch Folder\..\PB10 pwramp Rev5.schDrawn By:
1
2
3
4
5
6
Un-designated Connector
NOT USED
BR RECT
RS604
R40
1k
R41
1000k
U1
TLO64 C41
1uF
D12
1N5242B
D14
1N4148
C42
100uF
R43
1000k
D11
1N4148
U1
TLO64
R44
100k
R46
1000k
R47
10k
Q1
2N5457
R48
10k
D13
1N4148
R49
15k
R45
470K
C40
10uF
D6
1N5234B
C6
100nF
R7B
5k6
R6
47R
D1
1N4744A
D2
1N4744A
C21
100nF
C22
100nF
D3
1N5256B
R3
6M8
R1A
2k2
C32
10uF
U1
TLO64
R34
8k87
4
11 C27
3n3F
R33
23k7
C26
10nF
R32
47k
R31
47k
U1
TLO64
R22
42K2
R23
237k
R26
6k8
R30
2k2
R29
732R
R28
732R
C20
NOT USED
C3
100nF
R5
33k2
L2
2.2uH
L1
110uH
C10
10uF
C11
100nF
R15
100k
L3
0-R Jumper
L4
0-R Jumper
R10B
0.1R
R10C
0.1R
R10A
0.1R
Q10
MPSA56
R11
1k
Q11
MPSA56
R13
47k
R14
3k3
R12
1k Q12
2N4401
CZ
NOT USED
CW
NOT USED
SP Neg
SP Pos
V+ V-
TRX
MCI4932
CMC
2m2H
C7A 100nF
C7B
100nF
R2B
2k2
C1 4700uF
C2
4700uF
3AG FUSE
1.25A SloBlo
AC Feed
AC Return
9
8
10
R8A
4k7
R8B
4k7
R1B
2k2
R1C
2k2
R2C
2k2
R2A
2k2
12
13
14 R27
2k2
4
11
R7A
5k6
+15V
GND
GND
SIG
-15V
mute
2
3
1
5
6
7
R21
4K7
R42
10k
D7
1N4148
D8
1N4148
D10
1N5242B
R50
2k2
R100
NOT USED
4
11
4
11
To U1 Pin 4
To U1 Pin 11
SHORT CIRCUIT PROTECT
SIGNAL LED & AUTO MUTE
To/From PREAMP
D4
1N4148
R4
15k
UVLO
+15
-15
R24
NOT USED
R25
NOT USED
CONNECTOR
C24
220nF
C25
1n5F
R7C
5k6
B10 PwrAmp (6.3 PCB)
1
MA / LL
11
R9
NOT USED
3x 1W
3x 1W
1
2
3
AV SW
NOT USED
On Harness
2 Clr LED
+6V
V+
V-
+15V
S/D
FR
I/P
GND
-15V
O/P
MODULE
S53
On Harness
2 Clr LED
D5
1N4735A
AMI
5
1
2
V+ LED
MOLEX 2
CONNECTOR
1
2
LED Harness
MOLEX 2
LED1/2 Preamp
LED1/2 Preamp
Not Used