EKBI Posted December 22, 2014 Share Posted December 22, 2014 AS some of you know i got my hands on a r-115sw. But i hear an annoying buzz or humming from the sub? I do use an high end cable. Any idea what that could be? Martin Pedersen Denmark 1 Quote Link to comment Share on other sites More sharing options...
Klipschsonian Posted December 22, 2014 Share Posted December 22, 2014 (edited) Does it hum even when the receiver is off? If so, it sounds like an lfe output problem on the amp. Edited December 22, 2014 by actionjackson77 1 Quote Link to comment Share on other sites More sharing options...
EKBI Posted December 22, 2014 Author Share Posted December 22, 2014 It does... It's not my own receiver, but one the dealer lent me while mine is under operation.. Martin Pedersen Denmark 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 22, 2014 Share Posted December 22, 2014 Have you read THIS thread? 1 Quote Link to comment Share on other sites More sharing options...
Jim Posted December 22, 2014 Share Posted December 22, 2014 (edited) Try to hook the sub up with the high input if it has it. Hook the L/R channels from the receiver into the sub, and then the speakers to the sub to see if it still is there.If the hum is gone afterwards it may be the amp on the sub. If the hum is still there after hooking up through high output,that should confirm it's the ground. I had the same issue with one of my Klipsch Subs and when hooked up through high output the hum went away.As soon as I hooked it up through the cable, it came back. Just my opinion though. I'm not an electrician. That was just my instance. Edited December 22, 2014 by Jim Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted December 22, 2014 Share Posted December 22, 2014 Take CECAA805's advice. We just had a tread on this and I use the product with success. Roughly $ 6.00 and you won't have to waste a lot of time trying to fix the problem. If you try it, report back with your results. 1 Quote Link to comment Share on other sites More sharing options...
Jim Posted December 22, 2014 Share Posted December 22, 2014 Have you read THIS thread? If this doesn't work, at least you'll get a good laugh how everyone is attacking each other. 1 Quote Link to comment Share on other sites More sharing options...
EKBI Posted December 22, 2014 Author Share Posted December 22, 2014 I'll try it if the hum is still there when i get my receiver back from repair. Thanks for your inputs! Martin Pedersen Denmark 1 Quote Link to comment Share on other sites More sharing options...
Beechnut Posted December 22, 2014 Share Posted December 22, 2014 What happens when you remove the input cable from the AVR, (with it still plugged into the sub) does it still hum? If it still hums, take the input cable off of the sub and then see what happens. Still hums, certainly a sub problem. If there is no hum with just the sub turned on, then the sub isn't the source. If there is a hum with the sub turned on and the input cable plugged into the sub, but not the AVR...cable problem. After testing all the above, If it hums with the input cable plugged in (to both sub and AVR), sub turned on and AVR turned OFF, something silly in the AVR. Some ideas to help troubleshoot. Hope that was clear as mud Quote Link to comment Share on other sites More sharing options...
EKBI Posted December 22, 2014 Author Share Posted December 22, 2014 Them it must be the AVR. Just been confirmed with your suggestion. Martin Pedersen Denmark 1 Quote Link to comment Share on other sites More sharing options...
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