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In Reply to: RE: Disappointment with Rothwell attenuators posted by KanedaK on January 20, 2017 at 00:23:58
I don't know what CDP you have and its output voltage and impedance. 3dB of attenuation would halve the output. 10dB is a lot and could well explain your results. If you have done this because you don't like that the volume control only gets turned up a little attenuate the output of the pre to power amp connection instead.
What pre is it? What CDP and what power amp? Are you actually overdriving the input of the preamp to distortion\clipping that you connect the CDP to? Which input is that? Modern CDP's and sources have a much heftier and most often SS low impedance output of two volts or more. Vintage tube sources were usually lower output and definitely a lot higher output impedance.
Again since it is so easy try the Rothwells between pre out and power amp in. Good luck.
ET
"If at first you don't succeed, keep on sucking till you do suck seed" - Curly Howard 1936
Follow Ups:
CD player is Revox B226 - 2v, 500 ohms
Preamp is Korn&Mcway SP100. Sounds fabulous, but loads of gain. Specs unknown (it's a rarity). No idea of the input impedance. From around 1980.
I actually don't need to put the Rothwell between pre and power. Attenuation is done at power amps inputs (bi-amped sytem).
I just figured I would try the Rothwell because my previous CD player, with digital volume control, sounded slightly better when feeding the same preamp at -10dB output.
But I don't hear distortion per se. Not that I'm aware of, at least.
Still even with some attenuation in front of the power amps, 9 o'clock is loud, and 10o'clock shakes the house - but it's with 104dB sensitive horn speakers.
Globally all sounds great, I just thought I would try them - but it's no big deal.
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