distance from amplifier to preamplifier question?

Bob,

it's likely not the output signal from the pre (which the amp is then dealing with) that is the issue. it is more likely the power supply of the preamp is affected by the EMI from the amp's power supply. this EMI would cause noise in the preamp which then gets added to the signal path.

the power supply from the amp does not pollute itself.....or at least no more than it is designed to.

just a SWAG based on my personal experience.

maybe an EE or Phd in Physics can shed light on theory here to explain it from a factual perspective.

Mike

again I agree with you...regardless of this, I have absolutely no noise in my signal path and (as stated) my preamp is less than 2 feet from my left channel amp.

Oneobgyn,

I don't think grounding will help if it is EMI/RFI that is the worry. Only adequate sheilding will prevent this and perhaps your ARC has such sheilding. It is this same type of sheilding that one looks for when purchasing a center channel speaker for HT.

For folks like me who still insist on a CRT HDTV it can be quite a problem. I must keep my A/V receiver at least 3 feet from my TV or it effects the action of the photon gun. Only moving the receiver away and de-gaussing remove the effects.