DVD & Home Theater Gear Discuss DVD and Home Theater Equipment.

PSB Subsonic 5 - Hums!

Old 01-10-02, 08:30 PM
  #1  
Cool New Member
Thread Starter
 
Join Date: Nov 2001
Posts: 26
PSB Subsonic 5 - Hums!

Has anyone else noticed this? My PSB Subsonic 5 makes a slight humming sound while in stand-by mode (no signal). The hum can be heard from 4 feet away. Is it normal for subwoofers to hum a bit on standby?
PSB recommends leaving it switched on and letting its internal circuitry power it up when it detects an incoming signal - its placement makes it difficult to turn on and off but the hum is getting to me!!!
RickT is offline  
Old 01-10-02, 08:47 PM
  #2  
DVD Talk Hall of Fame
 
Join Date: Nov 1999
Location: Vermont
Posts: 9,774
There are a bunch of things you can try to eliminate the problem (which sounds to me like a ground loop hum, assuming the hum is at 60 Hz).

First, figure out where the problem is coming from by disconnecting the sub's RCA cable. If that eliminates the hum, try a better shielded cable. If it doesn't...


First, are there any dimmer switches on the same breaker as the subwoofer? Either way, try the sub in another outlet (or removing the dimmer switches).

Another thing to try is to add a "cheater" plug. This is an adapter that is made to convert a 3 prong power plug to 2 plugs. You can find them at Radio Shack. If using one of those the conventional way doesn't work, try it reversed/upside down.
stevevt is offline  
Old 01-10-02, 10:21 PM
  #3  
Gomez
Guest
 
Posts: n/a
Could be from A/C interference from power cord if power cord runs parallel to the audio cable.
 
Old 01-11-02, 08:47 AM
  #4  
Senior Member
 
Join Date: Oct 1999
Location: MT, USA
Posts: 746
Re: PSB Subsonic 5 - Hums!

Originally posted by RickT
Has anyone else noticed this? My PSB Subsonic 5 makes a slight humming sound while in stand-by mode (no signal).
My PSB humms too. I've tried a lot of different things (including moving) and it won't go away. I use to turn it off, but with the new house, the sub is in the corner, and I notice it a lot less.

I love it though. It rocks the house with many of my films.

Last edited by MrVette99; 01-11-02 at 10:49 AM.
MrVette99 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Archive Advertising Cookie Policy Privacy Statement Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.