Question about KLH Audio Players & Recorders
Disconnect offending unit. then play see if same response occurs on the alleged normal unit using the offending cable interchange cables see if you get same result. Means it's bench repair ,internal electronics require specialist equipment to locate the offending item.
Posted on Oct 31, 2018
make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet
Posted on Dec 16, 2008
Had the same problem with KLH E-10D Preamped Subwoofer. Afte brief research, I found the problem was with my Pioneer VSX-D509S reciever settings, not the subwoofer. If you have the same reciever, you can go to the pioneer website to download specific model owner's manuals.
Select your Pioneer reciever model and it will give you an option to download the pdf manual. Hope this helps.
Posted on Jan 24, 2009
SOURCE: Loud hHum from Subwoofer
Sounds like the hum might be mains hum caused by the failure of the power supply capacitor(s) in the sub. It/they will be the largest on the pc board. You will find all the details (needed to replace it) on them. If you find more than one replace both.
Posted on Dec 15, 2009
Did you ever find a solution for this problem? I have the exact same thing happening with my KLH subwoofer and I'd love to know how to fix it!
Posted on Jan 26, 2010
Before you go throwing money at this problem, try to eliminate any external influences like track lighting. I myself am trying to figure out why mine makes a buzz throughout my system when the lights are on. I already replaced the variable light control with no improvement.
Bad cable ground can let airborne electronic noise into the Sub's amp.
Posted on Jan 31, 2010
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