Boston Acoustics PowerVent PV400 User manual

PV400
PV600
PV800
PowerVent®Powered Subwoofers
PV 4/6/8 MANUAL 7.1.99 ƒ 7/30/99 4:01 PM Page 1
SERVICE GUIDE - PV600

5
Description
Boston’s new PowerVent subwoofers deliver the dynamic bass foundation that is essential for
lifelike reproduction of movie soundtracks and music in the home.
All the new subwoofers utilize rugged DCD™ (Deep Channel Design) bass units built in
Boston’s state-of-the-art manufacturing facility in Peabody, Massachusetts. Every one is tested
as it comes off the line to be within ±1dB of the lab reference unit, an incredibly tight tolerance.
The amplifiers have built-in variable crossovers that make it easy to achieve a seamless blend
with the main speakers, while 24dB/octave low-pass filters prevent the subwoofer from being
easily localized by ear, increasing placement flexibility. A crossover bypass position is provided
for use with home theater electronics that perform their own bass management functions.
Because of their high-powered amplifiers and computer-optimized tuning, all three models are
capable of impressive deep bass and high output from remarkably compact enclosures. In addi-
tion, they all feature BassTrac™, a proprietary new Boston-designed circuit that tracks the input
signal to the subwoofer and prevents its amplifier from being driven into audible distortion. The
benefit: The bass stays clean and strong at any listening level.
Auto on-off amplifier switching and easily accessible controls make the PowerVent subwoofers
as convenient to use as they are exciting to listen to.
Specifications
PV800 PV600 PV400
Frequency Response (±3dB) 26–150Hz 29–150Hz 44–150Hz
Subwoofer Amplifier Power 300 watts continuous, 4Ω120 watts continuous, 4Ω65 watts continuous, 4Ω
<0.5% THD, 250 watts, <0.5% THD, 100 watts, <0.5% THD, 50 watts,
20–150Hz 20–150Hz 20–150Hz
Subwoofer Crossover 50–150Hz 75–150Hz 75–150Hz
24dB/octave low-pass 24dB/octave low-pass 24dB/octave low-pass
Crossover Bypass Yes Yes Yes
Bass Unit 12" (300mm) DCD 10" (250mm) DCD 7" (180mm) DCD
down-firing down-firing internal
Enclosure Type Dual ported Dual ported Bandpass
Dimensions (HxWxD) 18 x 141/4 x 19" 161/2 x 117/8 x 161/8"19
1/2 x 10 x 11"
(458 x 363 x 483mm) (420 x 302 x 410mm) (496 x 254 x 280mm)
Weight 40 lbs (18kg) 30 lbs (14kg) 25 lbs (12kg)
Finish Black ash or white Black ash Black ash
vinyl veneer vinyl veneer vinyl veneer
PV 4/6/8 MANUAL 7.1.99 ƒ 7/30/99 4:01 PM Page 5

6
Connections
NOTE: Power is always supplied to the subwoofer electronics unless it is unplugged.
The auto-on circuitry only activates or deactivates the power amplifier. Make sure your
subwoofer and receiver are unplugged when making the connection.
Line level: Use the line level in with most systems. These inputs accept the line level signal from
your receiver’s subwoofer output. The subwoofer’s circuitry filters out the high frequencies and
sends the remaining low frequencies to the subwoofer power amplifier.
Speaker level: Use these high-level terminals with receivers that do not have subwoofer
output. The speaker inputs accept both left and right channel speaker signals from your receiver.
Connecting Your Subwoofer to Digital 5.1 Channel
Home Theater Systems
Digital 5.1 home theater electronics dedicate one channel (the “.1” of 5.1) to reproduce the
special low-frequency (LFE) information (such as explosions and thunder) contained in digitally-
encoded soundtracks.
Select ”subwoofer-yes“ from your receiver’s set-up menu. Hooked up this way, the receiver’s
amplifier is relieved of having to reproduce the difficult low bass signals that can drive the
receiver into audible distortion.
Use an RCA cable (not included), as shown, to connect your digital receiver’s subwoofer output
to the subwoofer. Use the bypass crossover control input. On the PV400, set the crossover to the
direct position and connect to line level in.
use
crossover
control *
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
bypass
crossover
control **
75
100 125
150
crossover (Hz) power
0°
180°
polarity
left right
speaker level in
line level in
** bypass crossover control: direct to woofer;
use with sources having built-in crossover
controls or bass management (most products
with Dolby Digital or THX).
NRTL/C
ANSI/UL-1492
LR106476
subwoofer out
BACK OF RECEIVER
PV600 REAR PANEL
PV 4/6/8 MANUAL 7.1.99 ƒ 7/30/99 4:01 PM Page 6

7
If you do not wish to run RCA cables to your subwoofer, you may use speaker wire to connect
the subwoofer in parallel with your main speakers. The subwoofer does not present any addi-
tional load to your receiver.
Select “subwoofer-no” from your receiver’s set-up menu. This sends the LFE signal to the main
left and right speakers, and thus, to the subwoofer. Consult your receiver’s owner’s manual for
more details.
When using the speaker wire hookup, the subwoofer’s built-in crossover is engaged. As a start-
ing point, set the crossover control on the subwoofer about 10Hz higher than the lower limit of
your main speakers’ bass response. Fine-tune the crossover setting by ear for the smoothest
blend with your main speakers. The best setting of the crossover control will depend on speaker
placement and personal preference.
Be sure to connect +to +(red) and –to –(black).
BACK OF RECEIVER
PV 4/6/8 MANUAL 7.1.99 ƒ 7/30/99 4:01 PM Page 7

8
Connecting Your Subwoofer to Stereo or Dolby®
Pro Logic®Systems
For stereo or Dolby Pro Logic systems, the easiest method is to use speaker wire
connections as shown.
You may also use the “sub out” connection from your receiver to the input on the subwoofer
marked use crossover control.
When using speaker wire or the use crossover control input, the subwoofer’s built-in crossover is
engaged. As a starting point, set the crossover control on the subwoofer about 10Hz higher than
the lower limit of your main speakers’ bass response. Fine-tune the crossover setting by ear for
the smoothest blend with your main speakers. The best setting of the crossover control will
depend on speaker placement and personal preference.
BACK OF RECEIVER
3.0A 250V
CAUTION: Disconnect supply cord before replacing fuse. For continued protection
against risk of fire, replace only with same type fuse.
ATTENTION: Debrancher avant de remplacer le fusible. Utiliser un fusible de
rechange de même type.
120V 60Hz 3.0A
0°
180°
polarity
on
power
off
auto
50
80
150
120
left right
speaker level in
crossover (Hz)
use
crossover
control *
bypass
crossover
control **
line level in
* use crossover control: removes high frequencies; use with sources lacking
suitable filtering (most products without Dolby Digital or THX), or where manual
control is desired.
** bypass crossover control: direct to woofer; use with sources having built-
in crossover controls or bass management (most products with Dolby Digital
or THX).
subwoofer out
BACK OF RECEIVER
PV800 REAR PANEL
PV 4/6/8 MANUAL 7.1.99 ƒ 7/30/99 4:01 PM Page 8

9
Controls
Volume: Adjusts the sound level of the subwoofer. A typical setting is around 10 o’clock.
Crossover (Hz): Adjusts the frequency of the low-pass filter for the subwoofer.
Polarity (0° or 180°): Selects regular (0°) or inverted (180°) polarity for the subwoofer. Set this
switch to provide the fullest, most dynamic bass. The distinction of phase will be most audible
on low-frequency percussion instruments or music with a continuously repeating bass line.
Power off/auto/on (PV800 only): Set to auto, the PV800 turns on automatically when a signal
is presented to it. Set to on, and the PV800 will stay on all the time.
The PV600 and PV400 have auto-on circuitry that turns the subwoofer on when a signal is
presented, and turns off if no signal is detected for 15 minutes.
NOTE: Power is always supplied to the subwoofer electronics unless it is unplugged. The auto-
on circuitry only activates or deactivates the power amplifier.
The PV600 and PV800 volume control is on the front of the subwoofer.
0
1
2
3
4
56
7
8
9
10
volume
Boston
3.0A 250V
CAUTION: Disconnect supply cord before replacing fuse. For continued protection
against risk of fire, replace only with same type fuse.
ATTENTION: Debrancher avant de remplacer le fusible. Utiliser un fusible de
rechange de même type.
120V 60Hz 3.0A
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
0°
180°
polarity
on
power
off
auto
50
80
150
120
left right
speaker level in
crossover (Hz)
use
crossover
control *
bypass
crossover
control **
line level in
PowerVent Powered Subwoofer
®
PV800
* use crossover control: removes high frequencies; use with sources lacking
suitable filtering (most products without Dolby Digital or THX), or where manual
control is desired.
** bypass crossover control: direct to woofer; use with sources having built-
in crossover controls or bass management (most products with Dolby Digital
or THX).
NRTL/C
ANSI/UL-1492
LR106476
crossover (Hz) volumepower
0°
180°
polarity
line level in
1.0A 250V
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
left right
speaker level in
75
100
Direct
125
CAUTION: Disconnect supply cord before replacing
fuse. For continued protection against risk of fire,
replace only with same type fuse.
ATTENTION: Debrancher avant de remplacer le fusible.
Utiliser un fusible de rechange de même type.
120V 60Hz 1.0A
PowerVent Powered Subwoofer
®
PV400
NRTL/C
ANSI/UL-1492
LR106476
use
crossover
control *
1.25A 250V
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: Disconnect supply cord
before replacing fuse. For continued
protection against risk of fire, replace only
with same type fuse.
ATTENTION: Debrancher avant de
remplacer le fusible. Utiliser un fusible de
rechange de même type.
120V 60Hz 1.25A
bypass
crossover
control **
75
100 125
150
* use crossover control: removes high
frequencies; use with sources lacking suitable
filtering (most products without Dolby Digital
or THX), or where manual control is desired.
crossover (Hz) power
0°
180°
polarity
left right
speaker level in
PowerVent Powered Subwoofer
®
PV600
line level in
** bypass crossover control: direct to woofer;
use with sources having built-in crossover
controls or bass management (most products
with Dolby Digital or THX).
NRTL/C
ANSI/UL-1492
LR106476
PV 4/6/8 MANUAL 7.1.99 ƒ 7/30/99 4:01 PM Page 9

Item: PV600 PV600 10" BLACK POWERED SW (KK) EA Eng Bill: No
Alternate: Primary UOM: EA Rev: 1 Date: 09-Jun-05 23:59
Item
Level Seq Item Description Rev UOM Quantity
--------- ---- --------------- ---------------------------------------- --- --- -----------
1 10 010-001015-0 WOOFER 10" PV600 0 EA 1.00
.2 10 011-000334-0 TOP PLATE 42.5X93.5X6.0 0 EA 1.00
.2 20 011-000439-1 BACK PLATE/POLE PIECE 38X23.32X11.8 1 EA 1.00
.2 30 011-000502-0 BASKET 10" 0 EA 1.00
.2 40 012-000064-1 SPIDER FLAT N/D 1.5" X 5.6" 1 EA 1.00
.2 50 012-000158-0 CONE-SKIVER 10" 0 EA 1.00
.2 60 012-000302-2 DUSTCAP 10.0 2 EA 1.00
.2 70 015-000012-1 MAGNET 2.00X4.00X.650 1 EA 1.00
.2 80 020-000620-3 VOICE COIL 1.5 X 4 3 EA 1.00
.2 90 031-000282-0 TERM STRIP 0 EA 1.00
.2 100 033-000019-0 ADH LOCTITE#326-85 0 LTR 0.00
.2 110 033-000026-0 ACTIV SOLVENTLESS LOCTITE#7090 0 LTR 0.00
.2 120 033-000087-0 ADH MOYEN #3068 0 GA 0.00
.2 130 033-000048-0 EPOXY RESIN MOYEN#EP-351-A 0 GA 0.00
.2 140 033-000049-0 EPOXY HARDENER MOYEN#EP-851H 0 GA 0.00
.2 150 033-000050-0 PIGMENT RED OXIDE LIGHT DANIEL#ST-8610 0 GA 0.00
.2 160 033-000051-0 PIGMENT BLU DANIEL#ST-8298 0 OZ 0.00
.2 170 033-000082-0 SOLDER WIRE 63/37 .062 DIA. 0 LB 0.00
.2 180 033-000093-0 ADH #CB-1465 BLACK 0 GA 0.00
1 20 010-001020-0 F/A PV600 0 EA 1.00
.2 10 041-000071-4 TAPE 3" BRN "BLACK" 4 RL 0.00
.2 20 014-000104-0 GASKET 10"X1/8" WF RND 0 EA 1.00
.2 30 014-000183-1 GASKET CONTROL RND 1 EA 1.00
.2 50 020-001134-1 CAB ASSY PV600 1 EA 1.00
.2 60 020-001136-4 AMP PV600 4 EA 1.00
.2 70 011-001017-1 CONTROL PANEL 1 EA 1.00
.2 75 020-001218-1 VOLUME PCB ASSY W/CABLE 1 EA 1.00
.2 85 031-000186-1 KNOB SW BLK 1 EA 1.00
.2 87 031-000268-1 KNOB LARGE BLK 1 EA 1.00
.2 90 037-000591-1 LOGO- PV SUBS 1 EA 1.00
.2 95 037-000601-1 BUMPER RND 1 3/4" 1 EA 4.00
.2 111 040-000046-1 SCREW 8X1 1/2 PPH 1 EA 4.00
.2 120 040-000054-1 SCREW 9X1 #7 PFH 1 EA 4.00
.2 123 040-000141-0 SCREW 8X3/4 PPH PRTCL BRD 0 EA 10.00
.2 124 040-000159-0 SCREW 9X1 1/2 HCH PRTCL BRD 0 EA 4.00
.2 125 041-000011-1 FIBERGLAS R19 UNFACED 6"X15"W 1 RL 0.05
.2 130 041-000016-0 POLYBAG 9X12 2Mil 0 EA 1.00
.2 145 041-000176-0 POLYFOAM BAG 0 EA 1.00
.2 150 041-001043-0 RSC-1-EA PV600 0 EA 1.00
.2 150 041-000650-0 POLYBAG GUSSETED 18X18X35 2MIL 0 EA 1.00
.2 160 041-001045-0 CORR TRAY PV600 0 EA 1.00
.2 161 041-001111-1 EPS CORNER BLOCK 2" 1 EA 8.00
.2 245 042-001008-0 LABEL S SET (KK) PV600 0 SET 1.00
.2 250 042-001004-1 OWNERS MANUAL PV400/600/800 1 EA 1.00
.2 280 042-001107-1 PV MANUAL XO SETTING INSERT SHEET 1 EA 1.00
.2 290 042-001184-0 LABEL, DATE OF MANUFACTURE 0 EA 1.00
.2 300 042-001601-1 PRODUCT REGISTRATION CARD GRN (HOME) 1 EA 1.00

PV600 Amplifier Parts List
COMPONENT SEQ DESCRIPTION QTY LOCATION
MAIN BOARD COMPONENTS
600063 1 PCB, MAIN BOARD PSW-140 1 REVISION
CC0087 1 CAP, CA .01UF 100V 20% 1 C8
DS0001 1 RECT, 100mA 75V SIGNAL 1N4148T 4 D2,D3,D4,D5
DZ0021 1 ZENER, 500MW 15V 5% 1N5245B 1 Z2
DZ0033 1 ZENER, 500MW 16V 5% 1N5246B 1 Z1
RC0003 1 RES, CF 1K0 1/4W 5% 2 R81,R82
RC0006 1 RES, CF 10K 1/4W 5% 2 R1,R2
RC0273 1 RES, ZERO OHM 1/4W 2 R5,R6
RM0001 1 RES, MF 1K00 1/4W 1% 3 R13,R14,R16
RM0031 1 RES, MF 3K32 1/4W 1% 3 R11,R12,R15
RM0034 1 RES, MF 4K32 1/4W 1% 1 R3
RM0035 1 RES, MF 4K75 1/4W 1% 4 R4,R9,R10,R19
RM0113 1 RES, MF 20K0 1/4W 1% 2 R7,R8
CE0024 4 CAP, E 220UF 35V 20% 10X13 2 C4,C5
CE0098 4 CAP, E 22UF 50V 20% 5X11 .2LS 2 C3,C7
QB0017 4 TRANS, NPN 150V 0.6A 2N5551 1 Q4
QB0018 4 TRANS, PNP 150V 0.6A 2N5401 2 Q3,Q5
CE0088 6 CAP, E 4700U 63V 30X40 2 C1,C2
DB0009 6 RECT, 6A 400V BRIDGE 1 D1
JH0016 6 CNCTR, HEADER 2PIN .100CTR 1 BIAS
JH0074 6 CNCTR, HEADER 8PIN LOCKING .1C 1 J10
KS0017 6 THERMISTOR, 200K @ 25C NTC 1 R18
MT0023 6 TERM, FASTON MALE PCMT 187X032 5 GND,SEC-,SEC+,SPKR-,SPKR+
QB0013 6 TRANS, PNP TIP30B/C TO220 1 Q2
QB0019 6 TRANS, NPN TIP29B/C T0220 1 Q1
QM0015 6 MOSFET, IRF640 TO220AB 1 Q7
QM0034 6 MOSFET, IRF9540 TO220AB 1 Q6
RP0056 6 POT, 5K 8MM HOR TOP ADJ/COVER 1 R17
TS0016 6 TUBING, #5 BLACK CUT TO .3 2 Q6,Q7

PV600 Amplifier Parts List
COMPONENT SEQ DESCRIPTION QTY LOCATION
EQ BOARD COMPONENTS
630038 0 PCB, INPUT EQ PV600 1 REVISION
UA0003 0 OPAMP, QUAD 14PIN DIL LM324N 3 U1,U2,U4
UA0009 0 OPAMP, QUAD 14P DIL TL074/084 1 U3
CC0025 2 CAP, CA 1000PF 100V 10% 1 C18
CC0072 2 CAP, CA 100PF 100V 10% 5 C1,C12,C14,C15,C23
CC0082 2 CAP, CA .1UF 50V 20% 1 C16
CC0108 2 CAP, CA 22PF 50V 10 1 C24
DS0001 2 RECT, 100mA 75V SIGNAL 1N4148T 8 D1,D2,D5,D6,D8,D9,D10,D11, ECR 07/29/99 JODI
RC0001 2 RES, CF 1K0 1/2W 5% 1 R53
RC0004 2 RES, CF 1M0 1/4W 5% 1 R68
RC0079 2 RES, CF 9K1 1/2W 5% 2 R29,R30
RC0270 2 RES, CF 22M 1/4W 5% 1 R63
RC0273 2 RES, ZERO OHM 1/4W 2 R14,R20
RM0001 2 RES, MF 1K00 1/4W 1% 2 R22,R44
RM0002 2 RES, MF 10K0 1/4W 1% 5 R2,R5,R31,R52,R69
RM0003 2 RES, MF 15K0 1/4W 1% 5 R7,R21,R48,R66,R67
RM0011 2 RES, MF 100K 1/4W 1% 2 R38,R40
RM0024 2 RES, MF 2K21 1/4W 1% 1 R9, ECR 07/29/99 JODI
RM0029 2 RES, MF 3K01 1/4W 1% 1 R51
RM0031 2 RES, MF 3K32 1/4W 1% 2 R43,R64, ECR 07/29/99 JODI
RM0033 2 RES, MF 4K02 1/4W 1% 2 R32,R33, ECR 09/09/99 JODI
RM0035 2 RES, MF 4K75 1/4W 1% 3 R3,R4,R10
RM0049 2 RES, MF 9K09 1/4W 1% 3 R39,R41,R65
RM0075 2 RES, MF 475R 1/4W 1% 1 R50
RM0080 2 RES, MF 825R 1/4W 1% 1 R8
RM0081 2 RES, MF 1K10 1/4W 1% 1 R23, ECR 08/16/99 JODI
RM0113 2 RES, MF 20K0 1/4W 1% 2 R17,R18
RM0114 2 RES, MF 22K1 1/4W 1% 2 R11,R45
RM0120 2 RES, MF 30K1 1/4W 1% 5 R6,R58,R59,R60,R61
RM0122 2 RES, MF 33K0 1/4W 1% 1 R24
RM0126 2 RES, MF 47K0 1/4W 1% - RM0144 1 R49
RM0130 2 RES, MF 68K1 1/4W 1% 4 R34,R35,R54,R56
RM0156 2 RES, MF 392K 1/4W 1% 350V 1 R42
RM0168 2 RES, MF 604R 1/4W 1% 2 R27,R28
RM0171 2 RES, MF 475K 1/4W 1% 2 R25,R47
RM0248 2 RES, MF 60K4 1/4W 1% 1 R1
RM0260 2 RES, MF 1M0 1/4W 1% 1 R46
RM0313 2 RES, MF 6K49 1/4W 1% 1 R12
RM0329 2 RES, MF 191K 1/4W 1% 1 R15
RX0001 2 RES, MO 1K 1W 5% 4 R36,R37,R55,R57
CE0013 5 CAP, E 47UF 50V 20% 1 C4
CE0103 5 CAP, E 100UF 35V 85DEG 1 C17
CE0106 5 CAP, E 22UF 35V BP 6X11 .2LS 1 C9
CE0115 5 CAP, E 1UF 63V 6X11 85C 1 C26, ECR 08/16/99 JODI
CE0116 5 CAP, E 2.2UF 50V BIPOLAR 6X11 3 C2,C3,C11
CF0105 5 CAP, F .15U 63V .2LS 2 C5,C6
CF0128 5 CAP, F .033UF 100V 5MMLS 6 C7,C8,C13,C19,C22,C25
480014 7 SUB, #22B 4.25" .25 STRIP BOTH 3 (2X)HL-,J3-
480027 7 SUB, #22R 4.25" .25 STRIP BOTH 3 (2X)HL+,J3+
JC0106 7 CNCTR, DUAL RCA VERT MT BLK/GD 1 J2
JH0028 7 CNCTR, HEADER 3PIN .100CTR 1 J8
JH0074 7 CNCTR, HEADER 8PIN LOCKING .1C 1 J1
MM0025 7 MISC, PC MT SCREW TERM 6-32 1 J11
QM0035 7 JFET, N-CH J111 TO92 2 Q1,Q6, ECR 07/29/99 JODI
RP0036 7 POT, B50K DUAL 10% 1 R16
SR0007 7 SWITCH, SPDT TOGGLE C/W CAP PC 1 S1

PV600 Amplifier Parts List
COMPONENT SEQ DESCRIPTION QTY LOCATION
VOLUME BOARD COMPONENTS
610035 8 PCB, CONTROL VOLUME PV600/800 1 REVISION
JH0028 8 CNCTR, HEADER 3PIN .100CTR 1 J1
RP0047 8 POT, A100K SINGLE/ BRACKET 10% 1 R1
FINISHING COMPONENTS
480098 10 SUB, #16B 15" 187X032/187X032 1 SPEAKER WIRE, ECR 09/02/99 JODI
480099 10 SUB, #16R 15" 187X032/250X032 1 SPEAKER WIRE, ECR 09/02/99 JODI
500100 10 XFMR, POWER 100W 60HZ FT3200 1 POWER TRANSFORMER
810056 10 MET, HTSNK CLIP .9X.5X.2 FET 2 USED WITH THE FETS
840004 10 MET, 100W HEATSINK BRACKET 1 USED WITH THE MAIN BOARD
DL0014 10 LED, 3MM BICOLOR RED/GR 1 ON THE PANEL
DL0015 10 LED, BUSHING 3MM 1 ON THE PANEL
FH0006 10 FUSE, HOLDER PANEL MT 1 PANEL MOUNT
FS0015 10 FUSE, 1.25A 250V 1.25X.25 GLAS 1 FUSE
HN0001 10 NUT, KEP 3/16AF 4-40 ZNP 2 USED ON MPT-3
HN0006 10 NUT, KEP 1/4AF 6-32 ZNP 2 2PER USED WITH THE HEATSINK
HN0013 10 NUT, HEX #6-32 NYLON INSERT 4 USED ON THE POWER TRANSFORMER, ECR 08/27/99 JODI
HS0044 10 SCREW, #4 SELF TAP PAN PHIL ZP 4 USED ON THE HEATSINK
HS0047 10 SCREW, #6-32 3/4 PAN PHIL BLK 4 USED ON THE POWER TRANSFORMER
HS0051 10 SCREW, #4-40X3/8 PAN PHIL BLK 2 USED ON MPT-3
HS0054 10 SCREW, #4 SELF TAP 1/2 PAN PHI 1 USED ON THE RCA
HS0062 10 SCREW, #6 SELF TAP PAN PHIL BL 2 USED WITH THE FETS
HS0066 10 SCREW, #6-32X1/2 PAN PHIL BLK 2 USED WITH THE HEATSINK
HW0031 10 WASHER, SHOULDER .290OD .140ID 2 USED WITH THE HEATSINK
HW0033 10 WASHER, FLAT .1375ID .625OD ZP 4 USED ON THE TRANSFORMER
JC0071 10 CNCTR, FEM-FEM HARNESS 8PIN 9" 1 FROM MAIN BOARD TO EQ BOARD
JC0072 10 CNCTR, 2PIN MINI JUMPER(SHUNT) 1 BIAS
JC0145 10 CNCTR, FEM-FEM HARN 3P 21" SHI 1 EQ BOARD TO VOLUME BOARD
MM0030 10 MISC, FOAM .5X.5X.25 HOLE 1 USED ON THE TOGGLE SWITCH
MM0043 10 MISC, PANEL GASKET KSW-12 2 ON THE PERIMETER OF THE PANEL, ECR 08/16/99 JODI
MM0047 10 MISC, RUBBER GROMMET BA XFMR 4 USED ON THE TRANSFORMER, ECR 08/16/99 JODI
MPT-3 10 CNCTR, QUAD PUSH TERM IN-LINE 1 ON THE PANEL
MS0013 10 SILPAD, 1"X4" ADHESIVE 1 USED ON THE HEATSINK
MZ0017 10 STANDOFF, .2" NYLON LOCKING 4 USED ON THE HEATSINK
PV600 PANEL 10 PV600 PANEL COMPLETE 1 REVISION
TH0011 10 HEATSHRINK, 5/8" DIA X 2.5"L 1 TO BE USED ON THE FUSE HOLDER, ECR 08/27/99 JODI
WI0038 10 STRAIN RELIEF BUSHINGS 1 USED WITH THE POWER CORD
WI0040 10 WIRE, POWER CORD 8FT C/W TERM 1 POWER CORD

PERFORMANCE TEST / ALIGNMENT OF
PV600 AMPLIFIER
EQUIPMENT REQUIRED:
Audio Signal Generator (20-20Khz, output adjustable up to 2V RMS)
Dummy Load (4 ohm, 150 watt minimum)
Digital multimeter
Oscilloscope (dual trace)
Test leads / interconnect cables, as required
INITIAL INSPECTION:
Before plugging the unit in and applying power, check for the following:
- loose, frayed or chafed power cable, speaker leads and other wiring
- bent, broken or damaged circuit cards and components
- evidence of burning or arcing (charred circuit boards, discolored components)
- broken or separated traces or component leads
- physical damage or evidence of modification
CAUTION
Most of the PV600 amp's circuits are powered once the unit is plugged in. To minimize
the risk of damage to components, plug the amp in after all other connections have
been made whenever possible.
INITIAL SETTINGS: (see Figure 1)
POLARITY switch: 0 deg.
CROSSOVER control: fully clockwise

1. Attach a PV600/800 volume control assembly to the connector on the EQ PCB (see Figure
2). Turn the VOLUME knob to “0” (fully counterclockwise).
2. Remove jumper from the “BIAS” receptacle on the MAIN PCB (see Figures 2 & 3).
Connect a milliammeter between the pins on the receptacle.
3. Plug amp in. “POWER” LED should glow red. Allow five minutes for amp to warm up and
stabilize.
4. Measure bias on milliammeter. Adjust potentiometer R17 on MAIN PCB (see Figure 3) as
necessary to obtain value of 3.5 – 4.5 mA on meter. Wait five minutes, check to see that
current hasn’t drifted outside of 3.5 – 4.5 mA. Adjust, if necessary. Repeat until bias
current remains within the above range for five minutes after adjustment.
5. Unplug amp, remove milliammeter, and reinstall jumper. Connect audio signal generator to
“USE CROSSOVER CONTROL” RCA jack. Adjust generator for 135mV pk-pk, 80 Hz sine
wave.
NOTE: Amplifying a sine wave at high power settings puts an unusual strain on
audio amps. In the following step, keep the volume at the maximum power
output point for the minimum time possible, in order to avoid damage to
the amp under test.
6. Plug amp in. “POWER” LED should glow green. Slowly rotate VOLUME knob clockwise,
watching scope display. Channel 1 display should rise in amplitude smoothly, without noise
/ spikes / distortion of waveform. Continue to increase volume until waveform shows signs
of distortion or flattening at the peaks, then reduce volume to just below that threshold.
This will be your maximum power output point. Measure the voltage displayed on the
scope; it should be 50 V pk–pk or greater. Reduce volume until signal is 30 V pk–pk.
7. Turn CROSSOVER control counter clockwise. Wave displayed on the scope should
decrease in amplitude as the crossover frequency is decreased. Return CROSSOVER to
fully clockwise position.

8. Disconnect signal generator from “USE CROSSOVER CONTROL”, and connect to
“BYPASS CROSSOVER CONTROL” RCA jack. Turn CROSSOVER control
counterclockwise. Displayed wave should not change as control is rotated.
9. Switch POLARITY switch from 0 to 180 deg. Phase of Ch. 1 waveform should shift 180
deg. with respect to Ch. 2. (Note: depending on which channel you're using for scope sync,
it may appear that Ch. 2 shifts).
10.Slowly sweep the signal generator down to 20 Hz, then up to 200 hz, observing the
waveform displayed on the scope as you do. There should be little distortion of the
waveform at the lower frequencies. As the frequency increases above (approximately) 100
Hz, the amplitude will decrease— this is normal.
11.Disconnect the signal generator. Remove speaker leads from dummy load and connect to
low frequency driver. Connect a high level signal source (i.e. receiver) to the SPEAKER
LEVEL connections. Listen for any abnormalities (hum, clicks, etc.) in sound. Adjust
VOLUME control from minimum to maximum, ensure that there are no pops or clicks while
adjusting and that the volume changes smoothly.
12.Remove high level signal source from SPEAKER LEVEL IN connections. Ensure POWER
switch is in AUTO, and VOLUME control is fully counterclockwise. LED should switch from
green to red within 15-30 minutes.
END OF TEST

June 2006
Symptom Cause/Location Cure Part ID Part Numbe
r
PV 600
Blows Fuses OUTPUT DEVICES-PWR BRD REPLACE Q6-Q7 Q6-IRF9540 & Q7-IRF640
OR
RECTIFIERS-PWR BRD REPLACE Q1-Q2-Q3 Q1-TIP29C, Q2-TIP30C, Q3-2N5401
LOW OUTPUT N-CHANNEL JFETS-CNTRL BRD REPLACE Q1 & Q6 Q1-J111, Q6-J111
OR
TRANSISTOR- PWR BOARD REPLACE Q5 LM324N
60 HZ HUM QUAD-OPT AMP-CNTRL BRD REPLACE U4 LM324N
NO SIGNAL
DIRTY OUTPUT QUAD JFET OP-AMP CNTRL BRD REPLACE U3 TL084CN
PV600 Troubleshoot Guide