2. speakers
  3. 191758-2831

any ideas?

I have a Rythmik sub that I have been using for several years in my system.  It is connected via high level ( speaker cables from amp) interface.  It has always been quiet and actually a great sub.  For the past week or so, it has been making a mechanical buzz - NOT thru the speakers and not changing with volume.  Absolutely nothing in the system has been changed for several months nor have any changes been made in where things are plugged into.  Does anyone have any suggestions as to what might be the culprit?  The buzz  is annoying when no music playing, but the sub still seems to function perfectly when fed a signal.  I am at a loss..

jwpstayman
rick_n's avatar
rick_n
207 posts
 

If you added another piece of equipment or appliance on the same power circuit it could be a ground loop.  Try a cheep three prong adapter from the hardware store and see if that stops the hum.  Good luck and cheers

boxcarman
412 posts
 

I am stating what is obvious.  If it buzzes when not playing anything, it's the electronics inside that is causing it.  Could be a ground loop or decaying parts in the sub amp.

shooter41
76 posts
 

I second the above advice to contact Rythmik. That guy knows his products extremely well and their customer service is famously quite good.

jwillox
186 posts
 

Power supply caps have degraded, or transformer dying. 

devinplombier
116 posts
 

If the noise is constant whether music plays or not, AND it’s not coming from the speaker... that eliminates pretty much everything.

It could possibly be a buzzing inductor, though that’s kind of reaching. By nature all inductors buzz so they’re potted in resin or glue to quiet them down. The dampening material can fail with age.

If that’s what it is, it’s completely harmless.

 

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