SubSeries 1

Service Documentation
Rev 1.1 March 23, 2009

SubSeries 1 Service Documentation Rev 1.1

 A Member of the Lenbrook Group
http://www.psbspeakers.com
633 Granite Court, Pickering, Ontario
Canada L1W 3K1
Phone: (905) 831-6555
Fax: (905) 837-6357

INDEX
Amplifier Overview
3 Circuit Description
4 Operational Block Diagram

Operations
5 Conversion from 120v to 230v operation
6 Setting the bias current

Bill of Materials
7 Bill of Materials

PCB Information
10 Control Board Schematic
11 Control Board Artwork
12 Feature Board Schematic
15 Feature Board Artwork
16 Main Board Schematic
18 Main Board Artwork

Troubleshooting
20 Feature Board
22 Main Board

Safety Standards Documentation

23 CSA Approval
24 CE Approval
25 EMC Approval
26 FCC Approval

Note: The information in this booklet embodies proprietary designs and information which are the confidential property of PSB Speakers Inc.
none of which shall be copied, reproduced, disclosed to others, proposed or used in whole or in part, for any purpose without express
written permission of a duly authorized agent of PSB Speakers Inc. This booklet is subject to recall by PSB Speakers at any time. It is
being submitted in confidence, and patent rights are reserved.

SubSeries 1 Service Documentation Rev 1.1

 A Member of the Lenbrook Group
http://www.psbspeakers.com
633 Granite Court, Pickering, Ontario
Canada L1W 3K1
Phone: (905) 831-6555
Fax: (905) 837-6357

SubSeries 1 Amplifier Circuit Description

The SubSeries 1 amplifier is capable of delivering 110W of continuous RMS power to a 4
ohm load with less than 1 % THD + Noise.

The main unregulated switch mode DC power supply has been designed with dynamic
capability in mind. Switching at 50KHz substantially increases the efficiency of the power
supply while substantially reducing its size. The power supply can be switched to operate
from a 120 or 230Vac primary voltage by changing the position of two jumpers.

The regulated low voltage (+/- 15v) DC supply is comprised of a series pass voltage regulator
for each polarity. A zener diode comprises the positive voltage reference that is also used to
derive the negative voltage regulator reference effectively creating a voltage tracking
regulator.

An audio signal can be connected to either the low or high level inputs. The high level input
uses a differential input to minimize noise. The low level and high level input signals are
summed together at the input buffer. The signal then proceeds to the control board, which
contains the variable gain stage and variable low pass filter. The LFE Input/Crossover Bypass
switch selects between the output of the variable gain stage and the output of the variable low
pass filter stage. The signal then passes through a high pass filter, a selectable phase stage, a
transconductance amplifier (U5) and a current to voltage conversion stage. This last stage
also contains an Auto-Off circuit that uses a JFET to MUTE the output when no signal is
detected at the input of the variable gain stage for a period in excess of 10 to 15 minutes.
When the output is muted, the Auto Off circuit will immediately un-mute the amplifier
whenever a signal is detected.

A diode signal limiter provides dynamic overdrive protection through a series resistor at the
output of the current to voltage conversion stage. The signal level at which this protection
occurs varies with the main power supply voltage fed through the net labelled
BULK_MONITOR. The transconductance amp gain is reduced when output clipping is
detected or the diode signal limiter is frequently engaged. The signal finally passes through a
2nd order low pass filter before proceeding to the Class AB output stage section.

An integrated error amp drives the output stage that is comprised of a discrete bipolar
transistor Class A voltage gain stage coupled to a discrete MOSFET current gain stage. The
MOSFET Bias circuitry is factory calibrated and temperature compensated.

SubSeries 1 Service Documentation Rev 1.1 -3-

 SubSeries 1

April 25, 2006

SubSeries 1 Service Documentation Rev 1.1

SoftClip
Limit
Circuit

-4-
 A Member of the Lenbrook Group
http://www.psbspeakers.com
633 Granite Court, Pickering, Ontario
Canada L1W 3K1
Phone: (905) 831-6555
Fax: (905) 837-6357

SubSeries 1 Operating Voltage Configuration

120V Operation Requirements

1. A Shorting Jumper is installed across the two 120V mounting locations

2. The Fuse is T1.6A 250V
3. Correct Country 120VAC Power Cord must be used

OPERATION AT 220-240VAC WITH THE SHORTING JUMPERS CONNECTED IN

THE 120VAC CONFIGURATION WILL RESULT IN PERMANENT DAMAGE TO
THE AMPLIFIER’S POWER SUPPLY!

220-240V Operation Requirements

1. A Shorting Jumper is installed across the two 230V mounting locations

2. The Fuse is T0.8A 250V
3. Correct Country 220-240VAC Power Cord must be used

SubSeries 1 Service Documentation Rev 1.1 -5-

SubSeries 1 Service Documentation Rev 1.1 -6-
 SubSeries 1 Bill of Materials

Board # 600088 COMPONENT DESCRIPTION QTY NARRATIONS

DNI DO NOT INSERT 0 R4,C15,R31,R32,C6,C8
500123 XFMR, POWER EER35L 50V X2 1 T1
540136 IND, CM CHOKE UU10 8MH 0.8A 1 L1
600088-6 PCB, MAIN BOARD PDC 1HSNK 120V 1 PCB
810056 HTSNK, FET CLIP .9X.5X.02 2 USED ON Q4,Q5 ON MAIN BOARD
810125 HTSNK, FET 1-2 SAM 1.5X1.4 1 USED FOR Q7,Q8 ON MAIN BOARD
810163 HTSNK, RIGHT SUBZERO I 1 USED ON Q4 ON MAIN BOARD
810164 HTSNK, LEFT SUBZERO I 1 USED ON Q5 ON MAIN BOARD
CC0064 CAP, CA .022UF 50V 10% 1 C14
CC0082 CAP, CA .1UF 50V 20% 6 C21,C31,C32,C36,Z5,Z6
CC0130 CAP, CY1 4700PF 250V 20% .4LS 1 C26
CC0133 CAP, CY1 100PF 250V 10% .4LS 2 C16,C17
CE0003 CAP, E 2.2UF 50V 20% 105C 2 C12,C13
CE0013 CAP, E 47UF 50V 20% 5MMLS 4 C9,C10,C11,C18
CE0103 CAP, E 100UF 35V 85DEG 5MMLS 1 C23
CE0108 CAP, E 4.7UF 35V BIPOLAR 5X11 1 C22
CE0117 CAP, E 470UF 63V 13X26 85DEG 2 C20,C35
CE0148 CAP, E 220UF 200V 20% 18X35 2 C37,C38
CF0035 47
CAP, F .022UF 100V 5% 5MMLS 1 C1
CF0057 CAP, FX .22UF 250V 10% 22MMLS 1 C19
CF0095 27
CAP, F .47UF 63V 5% 5MMLS 1 C2
CF0151 CAP, F .1UF 250V 5% 5MMLS 4 C24,C25,C39,C40
DB0009 RECT, 6A 400V BRIDGE PRETRIM 1 D15
DR0077 RECT, 1A 100V FAST REC 1N4934 2 D13,D14
DR0108 RECT, 3A 200V BYW98-200L 4 D20,D21,D22,D23
DS0001 RECT, 100MA 75V SIGNAL 1N4148T 5 D1,D9,D10,D11,D12
DZ0002 ZENER, 500MW 12V 5% 1N5242B 2 Z2,Z4
DZ0014 ZENER, 500MW 14V 5% 1N5244B 1 Z1
HN0001 NUT, HEX KEP #4-40 ZNP 2 USED AT Q7,Q8 ON MAIN BD
HN0006 NUT, HEX KEP #6-32 ZNP 4 USED ON 810163 AND 810164 WITH HS0066
HS0051 SCREW, #4-40X3/8 PAN PHIL BLK 2 USED AT Q7,Q8 ON MAIN BD
HS0066 SCREW, #6-32X1/2 PAN PHIL BLK 4 USED ON 810163 AND 810164 WITH HN0006
HS0067 SCREW, #6-3/8 TYPE A PP BLK 2 USED ON Q4,Q5 ON MAIN BOARD
HW0012 WASHER, SHOULDER #4 2 USED ON Q7,Q8 ON MAIN BOARD
JH0016 CNCTR, HEADER 2PIN .100CTR 1 J8
JH0074 CNCTR, HEADER 8PIN LOCKING .1C 1 J17
JH0111 CNCTR, HEADER 8PIN .1CTR (4X2) 1 J6
KS0017 THERMISTOR, 100K @ 25C NTC BUL 1 TH1
KS0020 SURGISTOR, 10R 4A 1 R22
KV0004 VARISTOR, 300V 100J .6W 1 Z3
MS0005 SILPAD, .009" .3C/W TO-220-43 2 USED ON Q7,Q8 ON MAIN BOARD
MS0017 MISC, CERAMIC PLATE TO-220 2 USED AT Q4,Q5 ON MAIN BD
MT0023 TERM, FASTON MALE PCMT 187X032 4 J2,J3,J9,J10
PDC1012 SUBASSY, PDC CNTRLR 500-1500S 1 U8
QB0001 TRANS, PNP 40V .6A TO92 2N4403 2 Q1,Q10
QB0002 TRANS, NPN 40V .6A TO92 2N4401 1 Q9
QB0017 TRANS, NPN 150V 0.6A 2N5551TR 1 Q2
QB0018 TRANS, PNP 150V 0.6A 2N5401TR 1 Q3
QM0030 MOSFET, IRF730 TO220 IR ONLY 2 Q7,Q8
QM0036 MOSFET, IRF530 TO220 (IR ONLY) 1 Q4
QM0038 MOSFET, IRF9530 TO220AB IR ONL 1 Q5
QM0054 JFET, N-CH J113 TO92 TR 1 Q6
RC0003 RES, CF 1K0 1/4W 5% 1 R25
RC0006 RES, CF 10K 1/4W 5% 4 R8,R29,R37,R38
RC0035 RES, CF 22R 1/4W 5% 2 R45,R46
RC0039 RES, CF 2K2 1/4W 5% 3 R34,R35,R43
RC0083 RES, CF 100K 1/4W 5% 1 R9
RC0106 RES, CF 470R 1/4W 5% 3 R39,R40,R44
RC0121 RES, CF 1K5 1/4W 5% 2 R41,R42
RC0136 RES, CF 160K 1/4W 5% 1 R47
RC0273 RES, ZERO OHM 1/4W 1 R3
RM0002 RES, MF 10K0 1/4W 1% 2 R1,R64

-7-

SubSeries 1 Service Documentation Rev 1.1

 SubSeries 1 Bill of Materials

Board # 630190 COMPONENT DESCRIPTION QTYNARRATIONS

DNI DO NOT INSERT 0 R10,R24,R33,R35
DNI DO NOT INSERT 0 C25,C4
630190-0 PCB, FEATURE SSE1/SUB5I THAI 1 PCB
930060 MISC, QUAD PHONO BOX 1 BOX1
CC0024 CAP, CA 1000PF 50V 5% 3 C28,C29,C30
CC0072 CAP, CA 100PF 100V NPO 10% 6 C11,C22,C24,C27,C3,C8
CC0082 CAP, CA .1UF 50V 20% 3 C15,C16,C26
CC0112 CAP, CA 330PF 50V 10% 1 C17
CE0098 CAP, E 22UF 50V 20% 5X11 5MMLS 1 C31
CE0106 CAP, E 22UF 35V BP 8X11 5MMLS 1 C14
CE0116 CAP, E 2.2UF 50V BP 6X11 5MMLS 2 C1,C2
CE0119 CAP, E 22UF 6.3V 20% 4X7 85C 1 C21
CF0055 CAP, F .22UF 63V 5% 5MMLS 2 C12,C13
D1,D12,D14,D15,D16,D17,D18,D19,D2,D3,
RECT, 100MA 75V SIGNAL 1N4148T
DS0001 15 D4,D5,D7,D8,D9
DZ0014 ZENER, 500MW 14V 5% 1N5244B 1 D13
DZ0054 ZENER, 1W 10V
RES, MF 24K3 10%
1/4W 1%1N4740A R8
1 D6
HS0054 SCREW, #4-1/2 TYPE AB PP BLK 3 USED ON FEATURE BD BOX BOTTOM
JC0049 CNCTR, DUAL JACK RCA 1 J1
JH0074 CNCTR, HEADER 8PIN LOCKING .1C 2 J2,J7
MM0025 MISC, PC MT SCREW TERM 6-32 1 J4
QB0002 TRANS, NPN 40V .6A TO92 2N4401 2 Q1,Q3
RC0273 RES, ZERO OHM 1/4W 1 R25, D6
RC0290 RES, CF 9M1 1/4W 5% 1 R61
RM0001 RES, MF 1K00 1/4W 1% 3 R13,R6,R55
RM0002 RES, MF 10K0 1/4W 1% 89 R2,R4,R16,R17,R18,R19,R58,R59,R47
RM0011 RES, MF 100K 1/4W 1% 5 R9,R46,R56,R64,R65
RM0012 RES, MF 100R 1/4W 1% 2 R1,R3
RM0021 RES, MF 1K82 1/4W 1% 1 R26
RM0024 RES, MF 2K21 1/4W 1% 3 R57,R67,R54
RM0027 RES, MF 33K2 1/4W 1% 1 R36
RM0035 RES, MF 4K75 1/4W 1% 2 R32,R60
RM0041 RES, MF 61K9 1/4W 1% 1 R34
RM0073 RES, MF 392R 1/4W 1% 1 R37
RM0075 RES, MF 475R 1/4W 1% 1
2 R62,R8
RM0076 RES, MF 562R 1/4W 1% 2 R14,R15
RM0108 RES, MF 16K5 1/4W 1% 1 R5
RM0114 RES, MF 22K1 1/4W 1% 1 R49
RM0124 RES, MF 39K2 1/4W 1% 1 R31
RM0171 RES, MF 475K 1/4W 1% 2 R48,R66
RM0182 RES, MF 200K 1/4W 1% 3 R43,R44,R45
RM0188 RES, MF 499R 1/4W 1% 1 R63
RM0198 RES, MF 205K 1/4W 1% 1 R27
RM0311 RES, MF 4K22 1/4W 1% 3 R28,R29,R30
RM0389 RES, MF 806R
2K0 1/4W 1% 1 R7
RX0016 RES, MO 470R 1W 5% SMALL BODY 4 R20,R21,R22,R23
SR0007 SWITCH, SPDT TOGGLE C/W CAP PC 2 S1,S2
UA0009 OPAMP, QUAD 14P DIL TL074CNE4 3 U1,U2,U5
UA0016 TRANSAMP, DUAL 16P DIL LM13700 1 U3
RES, MF 2K2 1/4W 1% 1 R47

SubSeries 1 Service Documentation Rev 1.1 -8-

 SubSeries 1 Bill of Materials

Board # 610055 COMPONENT DESCRIPTION QTY NARRATIONS

610055 PCB, CONTROL BD SS5i 1 REVISION
CE0108 CAP, E 4.7UF 35V BIPOLAR 5X11 1 C4
CF0139 CAP, F .027UF 100V 5% 5MMLS 1 C1
CF0144 CAP, F .082UF 63VDC 5% 5MMLS 1 C2
JH0002 CNCTR, HEADER 2PIN .100CTR 1 D1 - REVERSE TO SILKSCREEN
JH0074 CNCTR, HEADER 8PIN LOCKING .1C 1 J1
RC0273 RES, ZERO OHM 1/4W 1 R2
RM0119 RES, MF 27K4 1/4W 1% 2 R3,R4
RM0273 RES, MF 1K94 1/4W 1% 1 R5
RP0036 POT, B50K DUAL 10% 1 R7
RP0063 POT, A10K SINGLE/BRACKET 1 R8
UA0004 OPAMP, DUAL 8PIN DIL LM358N 1 U1

Finishing COMPONENT DESCRIPTION QTY NARRATIONS

480178 SUB, #18B 3" 187X032/187X032 1 FROM THE IEC CONNECTOR TO POWER
480196 SUB, #16B 23" 187X032/205X020 1 SPEAKER WIRE (-)
480197 SUB, #16R 23" 187X032/110X020 1 SPEAKER WIRE (+)
480198 SUB, #18R 9" 187X032/187X032 1 FROM POWER SWITCH TO HH1 ON
480199 SUB, #18B 9" 187X032/187X032 1 FROM POWER SWITCH TO HH2 ON
480282 SUB, #18B 8" 1/4" STRIP BOTH 2 1PC FROM H4 ON FEATURE BD TO HI
480285 SUB, #18R 8" 1/4" STRIP BOTH 2 1PC FROM H3 ON FEATURE BD TO HI
480297 SUB, #18R 3" 187X032/187X032 1 From the IEC Connector to Power Switch
*FS0025 FUSE, 1.6A 250V 5MMx20MM Slow 2 1PC used on JC0251, 1PC Spare Fuse with Fo
**FS0036 FUSE, 0.8A 250V 5MMx20MM Slow 2 1PC used on JC0251, 1PC Space Fuse with Fo
HN0001 NUT, HEX KEP #4-40 ZNP 2 USED ON THE IEC CNCTR
HN0006 NUT, HEX KEP #6-32 ZNP 6 USED TO MOUNT THE HEATSINKS TO PANEL PANE
HS0051 SCREW, #4-40X3/8 PAN PHIL BLK 2 USED ON THE IEC CNCTR
HS0054 SCREW, #4-1/2 TYPE AB PP BLK 4 1PC USED ON FEATURE BD RCA;
HS0066 SCREW, #6-32X1/2 PAN PHIL BLK 7 1PC USED TO MOUNT FEATURE BD TO
JC0071 CNCTR, FEM-FEM HARNESS 8P 9" 1 FROM J1 ON 600088 TO J7 ON 630190
JC0072 CNCTR, 2PIN MINI JUMPER(SHUNT) 2 1PC USED ON JH0111 PIN 1-2;
JC0086 CNCTR, SINGLE BINDING POST RED 2 ON THE PANEL
JC0087 CNCTR, SINGLE BINDING POST BLK 2 ON THE PANEL
JC0181 CNCTR, FEM-FEM HARN 8P 18" SHI 1 FROM J1 ON 610055 BD TO J2 ON 630190
JC0184 CNCTR, FEM-LED GRN 5.5" 2P 5MM 1 LED HARNESS
JC0251 CNCTR, IEC/FUSE COMBO SOCKET 1 ON THE PANEL
SR0032 SWITCH, ROCKER TV5 C/W TERM 1 ON THE PANEL

* Only for 120Vac Version

** Only for 230Vac Version

SubSeries 1 Service Documentation Rev 1.1 -9-

 H G F E D C B A

H H

C4
4.7uF BP

G G

C2
82nF

+15V J1
CON8
VOLUME
F 1 F

R8 +15V
2
10K LOG R1 R2 AGND
3
OPT 0R -15V
+15V 4
LED
CW 5
REMOTE_IN
-15V 6

SubSeries 1 Service Documentation Rev 1.1

REMOTE_OUT
-15V RB1 7
LFE
OPT 8
6
E R5 - E

0R
2 U1B 7 To Feature
- R3 R4 OUT
TL082
27K4 27K4 Board
U1A 1 CW CW 5
TL082 OUT +
3 R7A R7B
+ 50K LIN 50K LIN

CROSSOVER FREQ.
D D

D1
+15V C1 LED
27nF
Control Board Schematic

C C

LL Gain @60Hz = 45dB

HL Gain @60Hz = 16dB

B B

Note: DC Voltages shown are to be measured PSB Speakers

relative to Analog Ground with the Amplifier Title SubSeries1 - Control Board
A
auto turn on/off circuit in the "ON" state. Volume Control & Variable Low Pass Filter A

No audio signal should be present at either the

Size Document Number Rev
low or high level inputs. A SSE1-Control
1
Date: 14 March 06 Sheet 1 of 7
H G F E D C B A

- 10 -
 Control Board Artwork

Solder Side Traces

Component Side Traces

SubSeries 1 Service Documentation Rev 1.1 - 11 -

 H G F E D C B A

+15v +15V
J7 J2
1 1
C3
2 2 100pF
3 3
4 4 R16 +15V
PREAMP LED
H 5 BINDING PORT H
CLIP_DETECT 5
6 REMOTE_IN
-ON\+OFF 6
7 REMOTE_OUT
7
INPUT, RIGHT,
-MAIN LFE
8 8
+MAIN POSITIVE 10K0
D16
TO
-15v -15V
D1N4148
MAIN TO BINDING PORT R20
CONTROL 470R
R5 INPUT, RIGHT,
+15V 16K5 NEGATIVE
D
R18
J1-A D17
10K0
G
RCA INPUT LEFT D1 -15V R22 D1N4148 G

R1 D1N4148 C1 R2 470R
1 2 -15V
- REMOTE_IN
10k0
100R 2.2uF 50V U1A 1

2
TL084 OUT
D2
R6
D1N4148 3 1k0
+
C4
-15V R17 +15V
DNI BINDING PORT F
F +15V
INPUT, LEFT,
+15V POSITIVE 10K0
D18
J1-B R21 D1N4148
BINDING PORT
RCA INPUT RIGHT D3 INPUT, LEFT, 470R
C2

SubSeries 1 Service Documentation Rev 1.1

R3 D1N4148 R4 NEGATIVE
1
R23 R19 D19
100R 10k0
2.2uF 50V 470R D1N4148

2
E E
D4
10K0
D1N4148 -15V

-15V

C8
100pF
D D

R14
560R

MAIN+
Feature Board Schematic

D6
0R
1N4740 10V
C 6 C
BULK_MONITOR - R13
1k0
U1B 7
OUT REMOTE_IN
TL084
R9 5
100K +
Q1 R10
2N4401 DNI C11 R15
100pF 560R
B B

R7 R8
2K0
806R 24K3
475R

MAIN-
PSB Speakers
Note: DC Voltages shown are to be measured Title SubSeries 1 Feature Board
relative to Analog Ground with the Amplifier GAIN @ 60Hz Input Buffers
A A

auto turn on/off circuit in the "ON" state. LOW LEVEL = 45dB
No audio signal should be present at either the Size Document Number Rev
HIGH LEVEL = 16dB A SSE1-Feature2
D low or high level inputs. 1
Date: 14 March 06 Sheet 3 of 7
H G F E D C B A

- 12 -
 C B A
F E D
H G

D HIGH PASS FILTER

R26
1K82
+15V
H
H

C15
R24 R25 R29 100nF
opt. 0R 4k22

C16
R28 100nF G
G
PHASE
S2 4k22
-15V 13
LFE INPUT/XVR BYPASS -
9 180 DEG C14 -15V
- 11 U1D 14
TL084 OUT
EXTERNAL XVR U1C 8
C12 C13 TL084 OUT
12 22uF
LFE 10
+
+ 4
S1 0 DEG
REMOTE_OUT F
F 220nF 220nF R30
INTERNAL XVR +15V 4k22
R27
205K0

SubSeries 1 Service Documentation Rev 1.1

E
E

LIM_CONTROL
+15V

+15V
R34 PRE_LIMIT
61K9 C30 C28
R35 1nF 1000pF
opt.
+15V
D
D

C29
R33 1nF
DNI

13 R36
Feature Board Schematic

16 D 33K2
R31 15 U3B
-15V LM13700
39k2 12
13 C
C 4 14 R37
- 392R
6 1
C17 U3A U2D 14
2 OUT PREAMP
LM13700 TL084
330PF 5
11 12
3
+
R32 +15V
4K75 COMPRESSOR B
B

Note: DC Voltages shown are to be measured

PSB Speakers
Title SubSeries1 Feature Board
relative to Analog Ground with the Amplifier
Filters and Compressor A
A
auto turn on/off circuit in the "ON" state.
No audio signal should be present at either the Size Document Number Rev
A SSE1-Feature1
low or high level inputs. 1
Date: 14 March 06 Sheet 2 of 7
C B A
F E D
H G

- 13 -
 E D C B A
H G F

+15V

PRE_LIMIT H
H
R45
C24 D13 200K0
100PF D1N5244 C21
PREAMP
14v R48 22uF
475K +15V
5 R47
BULK_MONITOR -15V
R43 R44
+ 2K2
10K0
2 D7 D8 U2B 7
- OUT R49
D1N4148 D1N4148 TL084 LIM_CONTROL G
G 22K1
200K0 200K0 U2A 1 6 D9
TL084 OUT - D1N4148
Q3
3
+ 2N4401
R46
100K0 +15V
+15V R56
-15V 100K

F
F

+15V
9 D5
- D1N4148 D
U2C 8 3
OUT D12 R54 +
TL084
2K21

SubSeries 1 Service Documentation Rev 1.1

R55
10 1 U5A 1K0
+ OUT
TL084
D1N4148 2
CLIP_DETECT E
E
-
C27 R64
100PF +15V 100K0 C22
-15V 100PF

R66 +15V
475K D14
D1N4148 D
D

R63
499R D15 C31
9 D1N4148 22uF
REMOTE_IN
R67
-
6 C26 U5C 8 13
- TL084 OUT - R60
100nF
Feature Board Schematic

2K21 4K75
U5B 7 10 R62 R61 U5D 14
OUT + TL084 OUT LED
TL084 475R 9M1
C25
5 DNI 12 C
C
+ R65
+
100K0
-15V
-ON/+OFF
R59
10K0

R58 R57
B
B 2K21
10K0

Note: DC Voltages shown are to be measured

PSB Speakers
Title SubSeries1 Feature Board
relative to Analog Ground with the Amplifier
Limiter + Audio Sense A
A
auto turn on/off circuit in the "ON" state.
No audio signal should be present at either the Size Document Number Rev
low or high level inputs. A SSE1-Feature3
1
D Date: 14 March 06 Sheet 4 of 7
E D C B A
H G F

- 14 -
 Feature Board Artwork

Solder Side Traces

(As seen from top of Board)

Component Side Traces

(As seen from top of Board)

SubSeries 1 Service Documentation Rev 1.1 - 15 -

 H G F E D C B A

CT+
H T1F H

4 150W HC

Q8 T1A +15V
8 IRF730 150W HC 14 1 U8 3
7815
7 3 D13 C31 Cxx
2
1N4934 0.1uF 0.1uF
2 T1E C9 C11
G
PRI+ 150W HC 47uF 50V G
47uF 50V
6
13 C32 C32
R21 0.1uF 0.1uF
U8 2 10R FP D14 C10 C18
PRI+ 1
1N4934 47uF 50v 47uF 50v
CT-
PDC1012 5 2 U7 3
7915
-15V
T1D D22
150W HC MUR420
Q7 T1B
F 12
5 F
IRF730 150W HC
+ MAIN
4 6

D22 C20
1 MUR420 470uF 63V
CT- C21
3 11 0.1uF

SubSeries 1 Service Documentation Rev 1.1

R30
15K 2W

7 C35
E
470uF 63V E
D22 C36
T1C
C24 MUR420 0.1uF
150W HC 10
0.1uF 250V

C26 - MAIN
PRI+
4700pF Y
D22
MUR420

PRIMARY
D
D
C25

SECONDARY
0.1uF 250V Analog
Ground

1
Main Board Schematic

J2
LINE (fused) 1
C
C
1

PRI+
C17
EMI REDUCTION C40
100pF
J6 0.1uF 250V R48
R65 (120V) C38 47K 1W
L1
1M0 1 3 2 - + 4 220uF 200V
AC INPUT D15
C19
(230V) CT-
125V/240V 0.22uF 250V 2 4
Z3 (230V)
IND 540136 CT+
C16
B (120V)
3

100pF C39 B

J3 C37 R47

t
1 0.1uF 250V
NEUTRAL 220uF 200V 160K

R22
NTC

Note: DC Voltages shown are to be measured

relative to Analog Ground with the Amplifier
auto turn on/off circuit in the "ON" state. PSB Speakers
A
A
Title SubSeries1- Main Board
No audio signal should be present at either the AC-DC Converter

low or high level inputs. Size Document Number Rev

B SSE1-Main1 1

Date: 14 MAR 06 Sheet 5 of 7

H G F E D C B A

- 16 -
 H G F E D C B A

H
H

C15
G OPT.
G

CLIP-DETECT
+15V
R25
1K0 +MAIN

R63 J8
60K4
FIXED LOW R37 R41
10K 1K5
PASS FILTER
F Q5 F
Q2 R45 IRF9530
C2 2N5551 22R
270nF
470nF

+15V D12
R1 R2 D1N4148

SubSeries 1 Service Documentation Rev 1.1

10K0 10K0
16K9
3 R62 C12 R34
PREAMP + R64 2.2uF 2K2 OUTPUT STAGE
10K0 4K75 CW
U1A 1 6 R36 R39 C14
OUT - 5K 470R 22nF
TL082
J9
E
C1 2 C22 U1B 7 E

47nF
22nF - OUT SPKR+
4.7uF BP TL082 D11
5 D1N4148
+ 0.250" X 0.032"
-15V
C13 R35 D10 R43
R4 R3 2.2uF 2K2 D1N4148
DNI 0R R44 2K2
R40
470R 470R
D9
D1N4148 J10
Q6 ERROR AMP
J113
SPKR-
Q3
D
R8 R46 0.205" X 0.032"
D
2N5401
10K0 22R
-ON\+OFF
D1 R38
C23 R42
D1N4148 10K 1K5
100uF Q4
+15V +15V IRF530

D
Main Board Schematic

R6 -15V -MAIN
1K74
C
C

Z2 Z2
1N5242B 1N5244B
Q1 Q10
2N4403 2N4403
TH1 J17
+15V
1
2
3
Q9 4
B
PREAMP
2N4401 -15V 5 B
R9 R29 CLIP-DETECT
R5 6
100K0 10K0 - ON/+OFF
3K92 7
Z4 R7 -MAIN
8
TO FEATURE BOARD

1N5242B 4K75 +MAIN

-15V
Note: DC Voltages shown are to be measured
THERMAL PROTECTION CIRCUIT relative to Analog Ground with the Amplifier
auto turn on/off circuit in the "ON" state. PSB Speakers
A
No audio signal should be present at either the A
Title SubSeries1 - Main Board
OUTPUT STAGE AND THERMAL PROTECTION
low or high level inputs.
Size Document Number Rev
B SSE1-Main2
D 1
Date: 14 March 06 Sheet 6 of 7
H G F E D C B A

- 17 -
 Main Board Artwork

Solder Side Traces

(As seen from top of Board)

SubSeries 1 Service Documentation Rev 1.1 - 18 -

 Main Board Artwork

Component Side Traces

(As seen from top of Board)

SubSeries 1 Service Documentation Rev 1.1 - 19 -

 H G F E D C B A

+15v +15V
J7 J2
1 1
C3
2 2 100pF
3 3
4 4 R16 +15V
PREAMP LED
H 5 BINDING PORT H
CLIP_DETECT 5
6 REMOTE_IN
-ON\+OFF 6
7 REMOTE_OUT
7
INPUT, RIGHT,
-MAIN LFE
8 8
+MAIN POSITIVE 10K0
D16
TO
-15v -15V
D1N4148
MAIN TO BINDING PORT R20
CONTROL 470R
R5 INPUT, RIGHT,
+15V 16K5 NEGATIVE
D
R18
J1-A D17
10K0
G
RCA INPUT LEFT D1 -15V R22 D1N4148 G

R1 D1N4148 C1 R2
-4.2dB 470R
1 2 -15V
- REMOTE_IN
10k0
100R 2.2uF 50V U1A 1

2
TL084 OUT
D2
R6
0dB D1N4148 3 1k0
+
C4
-15V R17 +15V
DNI BINDING PORT F
F +15V
INPUT, LEFT,
+15V POSITIVE 10K0
D18
J1-B R21 D1N4148
BINDING PORT
RCA INPUT RIGHT D3 INPUT, LEFT, 470R
C2

SubSeries 1 Service Documentation Rev 1.1

R3 D1N4148 R4 NEGATIVE
1
R23 R19 D19
100R 10k0
2.2uF 50V 470R D1N4148

2
E E
D4
10K0
D1N4148 -15V

-15V

C8
100pF
D D

R14
560R

MAIN+

D6
0R
1N4740 10V
C 6 C
Troubleshooting : Feature Board

BULK_MONITOR - R13
1k0
U1B 7
OUT REMOTE_IN
TL084
R9 5
100K +
Q1 R10
2N4401 DNI C11 R15
100pF 560R
B B

R7 R8
2K0
806R 24K3
475R

MAIN-
PSB Speakers
Note: AC Voltages are to be measured Title SubSeries 1 Feature Board
relative to Analog Ground with the gain and GAIN @ 60Hz Input Buffers
A A

crossover pots at max and the LFE switch off. LOW LEVEL = 45dB
Size Document Number Rev
The audio signal is a 10mV RMS 60Hz sine HIGH LEVEL = 16dB A SSE1-Feature2
D Wave fed into one of the low level inputs. 1
Date: 14 March 06 Sheet 3 of 7
H G F E D C B A

- 20 -
 C B A
F E D
H G

D HIGH PASS FILTER

R26
1K82
+15V
H
H

C15
R24 R25 R29 100nF
opt. 0R 4k22

C16
R28 100nF G
G
PHASE
S2 4k22
-15V 13
LFE INPUT/XVR BYPASS -
9 180 DEG C14 -15V
- 11 U1D 14
TL084 OUT
EXTERNAL XVR U1C 8
C12 C13 TL084 OUT
12 22uF
LFE 10
+
+ 4
S1 0 DEG
REMOTE_OUT 24dB F
F 220nF 220nF R30
INTERNAL XVR +15V 24dB 4k22
20dB R27
205K0

SubSeries 1 Service Documentation Rev 1.1

E
E

LIM_CONTROL
+15V

+15V
R34 PRE_LIMIT
61K9 C30 C28
R35 1nF 1000pF
opt.
+15V
D
D

C29
R33 1nF
DNI

13 R36
16 D 33K2
R31 15 U3B
-15V LM13700
39k2 12
C
Troubleshooting : Feature Board

C 4 14 13 R37
- 392R
6 1
C17 U3A U2D 14
2 OUT PREAMP
LM13700 TL084
330PF 5
11 12
3
+
R32 +15V 31dB
4K75 COMPRESSOR B
B

PSB Speakers
Note: AC Voltages are to be measured Title SubSeries1 Feature Board
relative to Analog Ground with the gain and Filters and Compressor A
A
crossover pots at max and the LFE switch off.
Size Document Number Rev
The audio signal is a 10mV RMS 60Hz sine
A SSE1-Feature1
Wave fed into one of the low level inputs. 1
Date: 14 March 06 Sheet 2 of 7
C B A
F E D
H G

- 21 -
 H G F E D C B A

H
H

C15
G OPT.
G

CLIP-DETECT
+15V
R25
1K0 +MAIN

R63 J8
60K4
FIXED LOW R37 R41
10K 1K5
PASS FILTER
F Q5 F
Q2 R45 IRF9530
C2 2N5551 22R
270nF
470nF

33dB D12
+15V
R1 R2
40dB D1N4148

SubSeries 1 Service Documentation Rev 1.1

10K0 10K0
16K9
3 R62 C12 R34
PREAMP + R64 2.2uF 2K2 OUTPUT STAGE
10K0 4K75 CW
U1A 1 6 R36 R39 C14
OUT - 5K 470R 22nF
TL082
J9
E
C1 2 C22 U1B 7 E

47nF
22nF - OUT SPKR+
4.7uF BP TL082 D11
5 D1N4148
+ 0.250" X 0.032"
31dB -15V
C13 R35 D10 R43
R4 R3 2.2uF 2K2 D1N4148
DNI 0R R44 2K2
R40
470R 470R
D9
D1N4148 J10
Q6 ERROR AMP
45dB
J113
SPKR-
Q3
D
R8 R46 0.205" X 0.032"
D
2N5401
10K0 22R
-ON\+OFF
D1 R38
C23 R42
D1N4148 10K 1K5
100uF Q4
+15V +15V IRF530

R6 -15V -MAIN
1K74
C
C

Z2
Troubleshooting : Main Board

Z2
1N5242B 1N5244B
Q1 Q10
2N4403 2N4403
TH1 J17
+15V
1
2
3
Q9 4
B
PREAMP
2N4401 -15V 5 B
R9 R29 CLIP-DETECT
R5 6
100K0 10K0 - ON/+OFF
3K92 7
Z4 R7 -MAIN
8
TO FEATURE BOARD

1N5242B 4K75 +MAIN

-15V Note: AC Voltages are to be measured

THERMAL PROTECTION CIRCUIT relative to Analog Ground with the gain and
crossover pots at max and the LFE switch off. PSB Speakers
A
A
Title SubSeries1 - Main Board
The audio signal is a 10mV RMS 60Hz sine OUTPUT STAGE AND THERMAL PROTECTION
Wave fed into one of the low level inputs. Size Document Number Rev
B SSE1-Main2
D 1
Date: 14 March 06 Sheet 6 of 7
H G F E D C B A

- 22 -
SubSeries 1 Service Documentation Rev 1.1 - 23 -
SubSeries 1 Service Documentation Rev 1.1 - 24 -
SubSeries 1 Service Documentation Rev 1.1 - 25 -
SubSeries 1 Service Documentation Rev 1.1 - 26 -