If Service Seems Necessary
First, contact the dealer from whom you purchased the PV350. If that is not possible, write to:
Customer Service
Boston Acoustics, Inc.
300 Jubilee Drive
Peabody, MA 01960 U.S.A.
Or contact us via
We will promptly advise you of what action to take. If it is necessary to return your subwoofer to the factory, please ship it prepaid. After it has been repaired, we will return it freight prepaid in the U.S. and Canada.
If Speaker Wire Connections Cause the Subwoofer to Hum
Certain receivers use speaker grounding circuits that may be incompatible with the speaker level inputs of 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 the 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 posi- tive (or “pin”) terminals should not be wired or removed in either plug.
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.
single conductor (-) RCA to (-) RCA ground cable
RCA jack
use any available
RCA jack
BACK OF SUBWOOFER | BACK OF RECEIVER |
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300 Jubilee Drive Peabody, MA 01960 U.S.A. 978.538.5000 bostonacoustics.com
BassTrac, Boston, Boston Acoustics are registered trademarks of B o s t o n A c o u s t i c s , Inc. Dolby and Dolby Pro Logic are registered trademarks of Dolby Laboratories Licensing Corporation.
© 2004 Boston Acoustics, Inc. All rights reserved. Specifications subject to change without notice.
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