Nic is right. But consider a few other
choices as well. The thermal condition could cause a poor solder connection to
fail. Be advised that there are LETHAL voltages inside these units. If you are
inclined to investigate,
be aware of that. No time to comment further,
just finished a festival and have part two in the morning. Must
get sleep.
Respect
Will Brake
Soul Fruit Electronics
-----Original Message-----
From: Nic Roozeboom
[mailto:Nic_Roozeboom@msn.com]
Sent: Saturday, August 02, 2003
4:13 PM
To:
Loopers-Delight@loopers-delight.com
Subject: Re: [OT] Noise
interference problem
>>If
you're not overloading it by signal,
>well, that's the odd thing--at least to me. If I plug straight into
>my amps, there's no problem. When I run through all my gear--problem.
I
may not be the best qualified for remote troubleshooting (seen some very
methodical guidance offered on this list many times), but these are my
thoughts:
If
the signal chain of the additiona gear you mention doesn't affect the gain /
average power of the signal (adjust if so), then eliminate each piece of gear
individually (take 1 out, put back in chain, take 2 out etc) and check for
improvement.
If
level "shouldn't" be a problem (I.e. if amp headroom appears to be
sufficient) and the amp is overloading thermally, I tend to suspect inaudible
(high or low frequency) in your signal. It could be e.g. that one of your
digital (i.e. sampling) effects units is contributing significant out-of-band
power if it lacks sufficient post-filtering. If that is the case, putting it
upstream from anything that does have good HF roll-off should improve the
problem.
-----
Original Message -----
Sent: Saturday, August 02,
2003 12:51 PM
Subject: Re:
[OT] Noise interference problem
>
>Sounds a bit like your amps might be going into thermal shutdown.
Needless to say, this doesn't sound good! lol
>If you're not overloading it by signal,
well, that's the odd thing--at least to me. If I plug straight into
my amps, there's no problem. When I run through all my gear--problem.
> other potential sources of overload are hum, a DC offset problem
>(if DC coupled), or (inaudible) excessive RF interference coupling
>into the amp. Neither of these are necessarily solved by a supply
>filter such as the Furman.
Now I'm in over my head for sure, which was why I called Furman in
the first place. I may take your comments and run them by the guy I
talked to, just to see what he says. He was pretty thorough in his
explanation to me previously, but I didn't hit him with the scenarios
you are proposing either.
> It would take some investigation if it's not simply a matter of
>trimming down your average power level.
Call an electrician in other words?
Thanks for your help,
Jeff
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