On Wed, 21 Sep 2005 14:48:24 GMT, T Maki wrote:

You may have a noisy board level component somewhere. It
happens to even new equipment. A resistor, transistor/chip,
etc., maybe even a cold solder joint, maybe a slightly
oxidized connection somewhere. In troubleshooting some of my
own equipment over the years, I've occasionally found a
component will warm/cool and be the source of the kind of
sound on your clip.

Eliminate one piece at a time. The dummy loads are a good
first start. When you troubleshoot, be sure to use "known
good" substitutes at each point.

It can be frustrating, but approach it in a scientific way,
and you'll find it, or at least narrow it down to a
component that you can have looked at by someone else if
your electronic repair skills aren't up to it.

Good luck.


TM


If the noise were confined to a single channel, I would agree. But it is on
both, so the source must be somehow shared. It could be that the acoustic
environment is somehow different - artists further from the mic, air
conditioning on or off for example. Or it might be that the gain plan of
the chain is somehow different - attenuators switched into the mic, input
gain settings changed, perhaps.

d