Hi,
You might flip the wall plug for the adapter, this might limit it a little.
Also, I have noticed that if the recording volume is over say 14 or 15, then
you might notice the hum when plugged in to AC.
I try to keep my recording volume between 10 and 13, but of course that will
depend on what and where you are recording.
When possible, I also would rather use a mixer to control the preamping of
all my signals and I prefer using line-in instead of mike if at all
possible.
I suspect that the power supply might be letting some AC ripple through.
Just my thoughts.

Dan
----- Original Message ----- 
From: "stever2525" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, August 01, 2004 3:17 AM
Subject: AC hum during recording


> Yesterday, I attended and recorded a seminar. I was near an outlet, so I
> plugged in. That way I didn't have to worry about running out of power. I
> recorded using an external mic. When I got home, I noticed the playback
had
> a very noticeable     AC hum. I did expect it to be very low in the
> background but was louder than I expected. I could understand what was
being
> said but the hum was still annoying. In the past, with other recording
> equipment, this hasn't been a problem.
> I then tried another mic recording with and without AC with the same
> problem. This is only a problem with external recording.
> Is this inherent with the Plextalk or is there something I can do? Thank
> you.
>
>
>
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