[Amps] Excessive Henry Amp Hummmmmm

Amps

[Amps] Excessive Henry Amp Hummmmmm

To:	<amps@contesting.com>
Subject:	[Amps] Excessive Henry Amp Hummmmmm
From:	k9mk at flash.net (Mike Krzystyniak)
Date:	Thu May 8 08:54:25 2003

    I recently checked out a Henry 2002A 2M amp and 2004A 432 amp for a
friend.

    Compared to my Commander II the 2004A amps noise (blower noise and
residual hum) is a good 10dB louder.  But the 2002A is at least 6-10dB
louder than the 2004A amp.  It sounds like more like mechanical resonances
and I hear some droning with the blower.  I have tightened up a few loose
screws but overall the noise is still unacceptable.

    Has anyone had a similar experience with high residual noise from these
amps?  Has anyone had any success in reducing the noise?

   Thanks in advance.

73  Mike   K9MK/5

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