Question about Audio Players & Recorders
Tried everything...unplugged it and rehooked up cables,still no sound coming from subwoofer..soundbar works fine but subwoofer has no sound
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Posted on Jan 02, 2017
It sounds like you are describing an earth loop problem. I won't go into detail in this post, but try an isolation test first. disconnect everything from the reciever except the sub and try connecting say a BATTERY powered mp3 player or cd player to minimise connections to the electrical mains earth. you could also isolate things by taking your sub to a friend's house and trying it on their system.
If it is an earth loop use a process of elimination to find out which two pieces of equipment causes the earth loop. then apply filtering.
you can buy earth loop isolation transformers for about AU$26 and I've used one on my sub myself. Theyhave RCA (phono)plugs on each end and they connect inline with the signal cable to the sub amp.
as for the thumping sound it might be the speaker protection circuitry cutting off the amp to protect the subwoofer speaker from damaged. This might be triggered if the earth loop sound is causing the sub amp to overload and clip.
Failing this there might be a dried out overheated electro capacitor in the amp circuit causing the hum. Hav a chat to your local electronics person, who should be able to spot it!
Hope this puts you on the right track
Posted on Jan 07, 2010
Testimonial: "Thank you for your explanation of the possible causes for this error. I will investigate with the methods you suggested! :-)"
for Jameslicon re wireless sub going on and off repeatedly. Both the soundbar and the sub have 4 wireless channels - try a different pairing of those channels. There is a sliding switch on the back of both units. I set each of mine to channel 4 and the problem went away. There is also a signal level switch with 3 levels on the back of the soundbar. If the wireless channel idea does not work, try a different setting on the level switch. Good luck.
Posted on Nov 12, 2010
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