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The Super Zen amp and REL subwoofer: humming noise (Read 4165 times)

Alex P.

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Posts: 17

The Super Zen amp and REL subwoofer: humming noise
09/10/20 at 00:00:11

Hi,

Is anyone successfully running The Super Zen Triode amp with a REL amplifier using High Level inputs?

I follow REL's the instructions on connecting high-level cables (3 colored wires) to the speaker terminals of the amp, but when I turn on the subwoofer power I get a lot of humming noise. Their advice not to connect the black cable did not help and they are not familiar with the amp to further troubleshoot.

Any advice? Tx.

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Geno Seasoned Member Online Without music, life would be a mistake. Posts: 2338 Pearl, MS	Re: The Super Zen amp and REL subwoofer: humming noise Reply #1 - 09/10/20 at 00:08:20 I had exactly the same issue. Run a piece of speaker cable between the two negative speaker connections on the zen. I originally did this on Steve’s advice because I could not get rid of the hum. Worked like a charm!
Back to top	Bottlehead Stereomour ll or Sansui AU222 Cambridge CXN(ModWright) Technics SL1210 MK5(KAB Mods) London Decca Maroon cart Darlington Labs MP8b phono pre Otari MX5050-Bii2 R2R Decware Zbit Decware ZLC power cond. EcoFlow Delta 3 Classic Altec Valencia 846b IP Logged Share: Likes:

Alex P. Verified Member Offline Posts: 17	Re: The Super Zen amp and REL subwoofer: humming noise Reply #2 - 09/10/20 at 02:43:03 Brilliant! So to confirm, you bridge the L and the R negative terminals at the amp, right? Does that affect actual speaker sound at all?
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Geno

Seasoned Member

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Without music, life
would be a mistake.

Posts: 2338
Pearl, MS

Re: The Super Zen amp and REL subwoofer: humming noise
Reply #3 - 09/10/20 at 03:09:28

No effect on the speaker performance at all. I ended up with a piece of wire about 7” long with a banana plug on each side so I could just plug into the top of each negative terminal.

Like you, I had several conversations with REL techs trying to troubleshoot the hum problem. Ultimately it was Steve that came up with the solution.

Bottlehead Stereomour ll or Sansui AU222
Cambridge CXN(ModWright)
Technics SL1210 MK5(KAB Mods) London Decca Maroon cart
Darlington Labs MP8b phono pre
Otari MX5050-Bii2 R2R
Decware Zbit
Decware ZLC power cond.
EcoFlow Delta 3 Classic
Altec Valencia 846b

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Alex P. Verified Member Offline Posts: 17	Re: The Super Zen amp and REL subwoofer: humming noise Reply #4 - 09/10/20 at 04:26:35 It worked! So happy with the result. It took the genius of Steve to solve this puzzle.
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