2. home-theater
  3. 150385-111876

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 rankaudio

rankaudio OP
149 posts
 
Al, thanks very much for your feedback. Sounds like you really know your stuff. 
rankaudio OP
149 posts
 
Guys, thank you all for the feedback. The mono vs stereo issue was very interesting since I've always wondered about that. I may want to get a second sub for stereo bass then, assuming that means it may sound even better? Thanks for sharing that info.

I was able to solve the problem. There were two tube amps. One was a 2 watt Decware SE84UFO and the other, a Bob Latino Dynaco VTA ST-70 which I switch to for various reasons. The Decware was getting the hum while the Dynaco was not, so I just moved the Decware to a different location and the hum went away so I'm guessing some interference? I'm using an Erhard Audio Aretha tube preamp and a pair of Heresy II's. 

This REL is absolutely stunning in tight bass as well as low end extension. The REL's red wire is connected to the positive right speaker channel of the amp while the REL's yellow wire is connected to the positive left speaker channel. The black wire is connected to the left negative speaker channel per the instructions for my stereo setup. The issue was originally caused from the right positive channel.

I heard that if I get a second sub, one for each channel, the ideal setting is to connect each sub directly to the input of the speakers? Not sure of that's true but so far I'm overwhelmed with amazement on how incredibly good this whole things sounds now with the REL. It may be worth getting a second REL sub? 
Thank you again
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