In Reply to: Amplifier for AA Uno Nano ? posted by aaron1608 on March 17, 2016 at 17:25:50:
Any little tube rush or hum that you'd never heard on a typical system sounds like a jet engine and as soon as you notice it, it's all that you hear.
It's tough to say what will work for you. Often, I have to float the grounds which is more of a ground loop buzz. Or change tubes. That said, my Wavelength Geminis are as close to dead quiet as you can easily get. Another 300B amp worked great on a 95db speaker, but hummed like a banshee on my horns.
Still, to an extent, when you get into the 105db range in speakers, you will hear any buzz or hum if you try. A slight hum that you only hear with your head next to the speaker is likely the best that you'll get. Perfection will be elusive, IMO.
Just keep trying and returning candidates.
-Rod
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Follow Ups
- You've stumbled on the dirty little secret of High Efficiency speakers...hum!. - Rod M 18:03:05 03/17/16 (5)
- RE: You've stumbled on the dirty little secret of High Efficiency speakers...hum!. - aaron1608 18:24:28 03/17/16 (4)
- RE: You've stumbled on the dirty little secret of High Efficiency speakers...hum!. - GEO 17:04:05 03/18/16 (1)
- RE: You've stumbled on the dirty little secret of High Efficiency speakers...hum!. - aaron1608 17:05:37 03/18/16 (0)
- RE: You've stumbled on the dirty little secret of High Efficiency speakers...hum!. - Rod M 19:31:04 03/17/16 (1)
- RE: You've stumbled on the dirty little secret of High Efficiency speakers...hum!. - aaron1608 17:13:51 03/18/16 (0)