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Speaker Hiss with Krell Amp

Hi,

I have an in home audition with a Krell Evolution 302 and there is a hiss coming from the speakers. This did not occur with in home auditions of Hegel H20, Proceed HPA 2, Levinson 533, or Pass X350 amps.

The Krell is the only one of the tested amps that required a 20 amp cord. All of the amps were run on a 15 amp dedicated circuit. Speakers Are Thiel CS 5's with a Prima Luna Dialogue Premium Preamp.

Can anyone explain what is going on?

Thanks,

Scott

dsper

Showing 1 response by almarg

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almarg
9,670 posts
 
I assume, given the preamp you are using, that you are connecting it to the amp via RCA cables. Are jumpers in place between pins 1 and 3 of the amp's XLR connectors, as called for in the manual when the RCA input connectors are being used? If not, that could very conceivably account for the problem.

Also, can you provide some indication of how loud the hiss is?

Regards,
-- Al
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