2. home-theater
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REL T5i Subwoofer Hum issue

I followed all of REL’s suggestions on how to deal with hum but none address my issue. I’m using mine for stereo with my tube amplifier. All of the information I see or read just pertains to the left channel negative wire etc but the hum on mine appears to be coming from the red right positive channel. When I disconnect the right positive wire the hum stops dramatically and when I move the wire further away about seven inches or so, the hum stops altogether. I do have lots of wires and such around the area of the amp. Any ideas? I’m still waiting for a response from REL since it’s the weekend. 
Thanks
D
rankaudio

Showing 2 responses by uberwaltz

uberwaltz's avatar
uberwaltz
13,381 posts
 
Not quite sure how all the bickering is helping to resolve the ops ground ( assumed ) hum issue?

Would be nice to know the amp the op is using to drive the Rel.
uberwaltz's avatar
uberwaltz
13,381 posts
 
One assumes you are using the speaker level inputs because your amp does not have a RCA sub out?

I suffered a ground hum using same method from my old Ayre ax7e integrated , never solved it.

Not sure if I paid any attention to whether it was specifically the pos or neg wiring that was the cause.

Some amps and subs will need a different connection for the negative.
Some will be fine off the negative speaker terminal, some will need the sub negative connecting to chassis ground instead.

Depending on your amp you may need contact manufacturer to see what they recommend.

I cheated and used a wireless Martin Logan sub.
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