Posted by Wayne Parham [ 70.234.129.180 ] on June 25, 2007 at 18:11:56:
In Reply to: McIntosh C20 tube preamp, sound inequal... posted by kraken on June 23, 2007 at 10:02:39:
Has your technician done a swept sine test on both chanels to get a response curve? Has he checked for distortion? I think I'd check those two things first. You may have a problem that's easier to find with measurements than listening by ear. This kind of test should be done first end-to-end, then at each amplification stage in the circuit. You will eventually find a point where the signal changes from what is present at the inputs, and by narrowing down each stage one at a time, your technician should be able to find the cause.
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