Boston Acoustics Speaker PV700 User Manual

PV900  
PV700  
Powered Subwoofers  
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Specifications*  
PV900  
PV700  
Frequency Response ( 3dB)  
Subwoofer Amplifier Power  
26–150Hz  
29–150Hz  
FTC Rated Power: 300 watts @ 50 Hz  
into 4 ohms at less than 1% THD+N  
FTC Rated Power: 200 watts @ 50 Hz  
into 4 ohms at less than 1% THD+N  
Subwoofer Crossover  
50–150Hz  
50–150Hz  
24dB/octave low-pass  
24dB/octave low-pass  
LFE Input  
Yes  
Yes  
Yes  
Yes  
Crossover Bypass  
Bass Unit  
12" (305mm) DCD  
down-firing  
12" (305mm) DCD  
down-firing  
Enclosure Type  
Rear-ported  
Rear-ported  
Dimensions (HxWxD)  
(with feet and  
rear connectors)  
155/8 x 141/2 x 171/2"  
(397 x 369 x 445mm)  
141/4 x 131/2 x 163/4"  
(362 x 343 x 426mm)  
Weight  
Finish  
32 lbs (14.4kg)  
28 lbs (12.6kg)  
Black ash vinyl veneer  
Black ash vinyl veneer  
*In keeping with our policy of continual product improvements, specifications are subject to change without notice. Please visit our web  
page, www.bostonacoustics.com, for the latest specifications on these two products.  
Description  
Bostons PV700 and PV900 subwoofers deliver the dynamic bass foundation that is essential for lifelike reproduction of  
movie soundtracks and music in the home. These attractive powered subwoofers will complement any stereo or home  
theater surround sound system with their impressive bass output and compact size.  
Both subwoofers utilize our rugged DCD™ (Deep Channel Design) bass unit designed in Bostons state-of-the-art  
engineering 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 allow them to easily  
achieve a seamless blend with the main speakers, while a 24dB/octave low-pass filter prevents the subwoofers from  
being easily localized by ear, increasing placement flexibility. A crossover bypass function is provided for use with home  
theater electronics that perform their own bass management.  
Because of their high-powered amplifiers and computer-optimized tunings, the PV700 and PV900 are capable of impres-  
sive deep bass and high output from remarkably compact enclosures. In addition, they feature BassTrac®, a proprietary  
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 PV700 and PV900 subwoofers as convenient to  
use as they are exciting to listen to.  
3
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Connections  
NOTE: Power is always supplied to the subwoofer electronics unless it is unplugged or switched to the off position using  
the power toggle switch located in the lower left corner of the rear panel. 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 one of the “line level in” jacks with most systems. These inputs accept the line-level signal from your  
receivers subwoofer output. When using the “use crossover control” input, the subwoofers 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. NOTE: Certain receivers use speaker grounding  
circuits that may be incompatible with external powered audio products, such as powered subwoofers. When speaker  
wire is used instead of line level cables, this incompatibility can sometimes result in an audible hum when the receiver is  
turned off or switched to a different speaker channel. See page 8 for more information.  
How to Connect Using the Speaker Terminals  
We recommend 18-gauge wire or thicker for runs up to 15 feet (4.5m), and 16-gauge wire or thicker for longer runs.  
Separate the first few inches of the wire conductors. Strip off 12-inch (12mm) of insulation from the ends of each speaker  
wire to expose the two conductors and tightly twist the wire strands.  
WARNING: To prevent electrical shock hazard, always switch off the amplifier or receiver when making connections to  
the speaker.  
When making all connections, be sure to connect the + (red) on the speaker to the + (red) on the amplifier, and  
the (black) on the speaker to the (black) on the amplifier.  
+
IMPORTANT: Typically, one side of  
the wire is smooth. Connect this side  
to the (black) connection. The other  
side has a rib or stripe. Connect this  
to the + (red) connection.  
Using the five-way binding posts: The binding posts permit easy  
connection to banana plugs, spade lugs, and bare wire. Insert the wire in the  
hole (as shown on left) or a 3/8-inch spade lug over the post and tighten. For  
banana plugs, remove the red and black caps from the end-holes and insert  
either dual or single banana plugs (as shown on right).  
Using This Manual – PV700 versus PV900  
NOTE: The rear amplifier panels of the PV700 and the PV900 are virtually the same. Although the instructional images  
on the following pages depict the PV700s rear panel, the PV900 connects, functions and operates in exactly the same  
manner.  
4
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Connecting the Subwoofer to Digital Home Theater Systems  
Digital 5.1, 6.1 and 7.1 home theater electronics dedicate one channel (the “.1”) to reproduce the special  
low-frequency (LFE) information (such as explosions and thunder) contained in digitally-encoded soundtracks.  
Select ”subwoofer-yes“ from your receivers set-up menu. Hooked up this way, the receivers 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 receivers subwoofer output to the subwoofer.  
Connect the other end to the PV700 or PV900 jack labeled “bypass crossover control” underneath “line level in”.  
PV700  
PowerVent® Powered Subwoofer  
Featuring BassTrac®  
power mode  
auto  
* use crossover control: removes high  
frequencies; use with sources lacking suitable  
filtering (most products without Dolby Digital  
or DTS), 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 DTS).  
on  
power indicator  
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.  
polarity  
0 º  
180 º  
80  
50  
120  
BACK OF RECEIVER  
CAUTION  
crossover (Hz)  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR  
C
US  
150  
use  
120V ~ 60Hz 2.5A  
speaker level in  
crossover  
control *  
left  
right  
power  
line level in  
on  
off  
bypass  
crossover  
control **  
Use only with  
Employer uniquement avec  
un fusible de 250V  
a
250V fuse  
SUBWOOFER OUT  
T 2.5A L 250V  
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 (see diagram below). The subwoofer does not present any additional load to your receiver.  
Select “subwoofer-no” from your receivers set-up menu. This sends the LFE signal to the main left and right speakers,  
and thus, to the subwoofer. Consult your receivers owners manual for more details.  
When using the speaker wire hookup, the subwoofers 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 (for  
Boston Acoustics front speakers, refer to the included “Optimal Crossover Settings...”sheet). 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  
PV700  
PowerVent® Powered Subwoofer  
Featuring BassTrac®  
to main  
speakers  
power mode  
auto  
* use crossover control: removes high  
frequencies; use with sources lacking suitable  
filtering (most products without Dolby Digital  
or DTS), 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 DTS).  
right  
left  
on  
power indicator  
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.  
polarity  
0 º  
180 º  
80  
50  
120  
CAUTION  
crossover (Hz)  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR  
C
US  
150  
use  
120V ~ 60Hz 2.5A  
speaker level in  
crossover  
control *  
left  
right  
power  
line level in  
on  
off  
bypass  
crossover  
control **  
front  
Use only with  
Employer uniquement avec  
un fusible de 250V  
a
250V fuse  
speakers  
T 2.5A L 250V  
Be sure to connect + to +  
(red) and to (black).  
5
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Connecting the Subwoofer to Stereo or Dolby® Pro Logic® Systems  
For stereo or Dolby Pro Logic systems, the easiest method is to use the same speaker wire connections as shown on page 5.  
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 subwoofers 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 (for Boston Acoustics front speakers, refer to the included “Optimal Crossover Settings...”sheet). 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.  
PV700  
PowerVent® Powered Subwoofer  
Featuring BassTrac®  
power mode  
auto  
* use crossover control: removes high  
frequencies; use with sources lacking suitable  
filtering (most products without Dolby Digital  
or DTS), 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 DTS).  
on  
power indicator  
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.  
polarity  
0 º  
180 º  
80  
50  
120  
BACK OF RECEIVER  
CAUTION  
crossover (Hz)  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR  
C
US  
150  
use  
120V ~ 60Hz 2.5A  
speaker level in  
crossover  
control *  
left  
right  
power  
line level in  
on  
off  
bypass  
crossover  
control **  
Use only with  
Employer uniquement avec  
un fusible de 250V  
a
250V fuse  
SUBWOOFER OUT  
T 2.5A L 250V  
Controls  
power  
on  
80  
50  
120  
150  
polarity  
0 º  
crossover (Hz)  
180 º  
off  
Crossover (Hz)  
Polarity (0° or 180°)  
Main power switch  
Volume (on front panel)  
Adjusts the sound level of  
the subwoofer. A typical  
setting is around 11:00  
o’clock, as shown.  
Completely turns all power  
to the amplifier either on or  
off and over-rides the power  
mode switch. This switch  
must be turned on before  
setting the power mode  
switch (see next page).  
Adjusts the frequency of  
the low-pass filter for  
the subwoofer. This  
control is inactive when  
using the “bypass crossover  
control” input jack.  
Selects regular (0°) or inverted  
(180°) polarity for the  
subwoofer. Set this switch to  
provide the fullest, most  
dynamic bass. The effect of  
phase will be most audible on  
low-frequency percussion  
instruments or music with a  
continuously repeating bass line.  
6
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Controls (con’t)  
Power mode switch  
Power indicator: This two-  
color power status light will  
be red when the Power  
Mode Switch is set to auto  
(without any audio signal  
present) and green when set  
to on mode.  
NOTE: The Main Power Switch needs to be in the on position before this switch is active.  
Auto: When set to this position, the subwoofers auto-on  
circuitry turns the amplifier on when an audio signal is presented  
(turning the power indicator light green), and turns it off in  
approximately 15 minutes if no signal is detected (turning the  
power indicator red).  
on  
on  
auto  
auto  
power indicator  
On: When set to this position, the subwoofers auto-on  
circuitry is bypassed and the amplifier will remain on whether  
an audio signal is present or not (the power indicator light  
stays green).  
It will not light up at all until  
the Main Power switch is set  
to the on position.  
Placement  
Place the subwoofer next to a wall or in a corner near your main speakers. Typically, the sound is best when the subwoofer  
is within 15 feet (4.5m) of the main speakers. However, the sharp 24dB/octave crossover roll-off permits placement farther  
from the main speakers if necessary. Since the ear is unable to localize the low frequencies of the subwoofer, the bass still  
appears to come from the main speakers. In most cases, the subwoofer may be placed anywhere in the listening room.  
The level of bass output from the subwoofer will vary at different positions in a room. When placed near walls, its loudness  
is emphasized. Corner placement provides the most bass output, while placement near only one wall will provide some-  
what less bass. Placement completely away from walls may produce too little bass. Regardless of how you place the sub-  
woofer, you can adjust the subwoofers level with its volume control. If you move the subwoofer, recheck the setting of the  
polarity switch. Use the setting that yields the louder and more dynamic sound.  
IMPORTANT: Do not place the subwoofer where there is a chance of contact between the rear panel and drapes or  
furniture. Avoid obstructing air flow to the back.  
Position subwoofer  
in corner for maximum  
bass output  
7
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If Speaker Wire Connections Cause the Subwoofer to Hum  
Certain receivers use speaker grounding circuits that may be incompatible with external powered audio products,  
such as powered subwoofers. When speaker wire is used instead of line level cables, this incompatibility can result  
in an audible hum when the receiver is turned off or switched to a different speaker channel.  
If this should happen with your Boston Acoustics subwoofer, you will need to make a ground cable and connect it  
to either RCA line input on the subwoofer and any unused RCA line input or output on your receiver (see  
diagram). The proper ground cable for this application should consist of two male RCA plugs that have their  
negative outside terminals (or "sleeve") connected to each other by any length of single conductor copper cable.  
The inside positive (or "pin") terminals  
single conductor (-) RCA to (-) RCA ground cable  
should not be wired in either plug.  
use either RCA jack  
DIGITAL  
INPUT  
6
CH INPUT  
AUDIO  
VIDEO  
MAIN  
If you do not wish to make your own  
grounding cable, please contact the  
Boston Acoustics Customer Service  
Department directly (see below) and we  
will promptly ship one to you of suitable  
length at no charge.  
80  
120  
R
L
S
VIDEO  
VIDEO  
CD  
crossover (Hz)  
SURROUND  
V-AUX  
TUNER  
AM  
COAXIAL  
50  
150  
ANT  
CENTER  
SUB  
OPTICAL  
D-TV/CBL  
WOOFER  
IN  
COMPONENT VIDEO  
PR/CR  
PB/CB  
GND  
Y
use  
crossover  
control  
VCR  
OUT  
DVD  
*
DVD  
CD  
line level in  
use any  
75UNBAL.  
bypass  
crossover  
control **  
D-TV  
/CBL  
D-TV  
/CBL  
FM  
IN  
MD/CD-R  
ANT  
(PLAY)  
MD  
/CD-R  
MONITOR  
OUT  
available  
RCA jack  
OUT  
(REC)  
DVD  
R
L
SUB  
MD/CD-R  
OPTICAL  
WOOFER  
S
VIDEO  
VIDEO  
DIGITAL  
OUTPUT  
MONITOR OUT  
BACK OF SUBWOOFER  
AUDIO  
OUTPUT  
BACK OF RECEIVER  
If Service Seems Necessary  
First, contact the dealer from whom you purchased the PV700 or PV900. If that is not possible, write to:  
Customer Service  
Boston Acoustics, Inc.  
300 Jubilee Drive  
Or visit our web site at:  
Or email us at:  
Peabody, MA 01960 U.S.A.  
We will promptly advise you of what action to take. If it is necessary to return your unit to the factory, please ship it  
prepaid. After it has been repaired, we will return it freight prepaid in the U.S. and Canada.  
Limited Warranty  
For one year from the date of purchase, Boston Acoustics will repair for the original owner any defect in materials  
or workmanship that occurs in normal use of the subwoofer, without charge for parts and labor.  
Your responsibilities are to use the system according to the instructions supplied, to provide safe and secure  
transportation to an authorized Boston Acoustics service representative, and to present proof of purchase in the  
form of your sales slip when requesting service.  
Excluded from this warranty is damage that results from abuse, misuse, improper installation, accidents, shipping,  
or repairs/modifications by anyone other than an authorized Boston Acoustics service representative. This warranty  
is limited to the Boston Acoustics product and does not cover damage to any associated equipment. This warranty  
does not cover the cost of removal or reinstallation.  
This warranty is void if the serial number has been removed or defaced. This warranty gives you specific legal  
rights, and you may also have other rights which vary from state to state.  
DCD is a trademark and BassTrac, Boston and Boston Acoustics are  
300 Jubilee Drive  
Peabody, MA 01960 U.S.A.  
978.538.5000  
registered trademarks of Boston Acoustics, Inc. Dolby and Dolby Pro Logic  
are registered trademarks of Dolby Laboratories Licensing Corporation.  
© 2003 Boston Acoustics, Inc. All rights reserved.  
8
Specifications subject to change without notice.  
042-001685-0  
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