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Re: [Amps] Acoustic Noise Comparison

To: amps@contesting.com
Subject: Re: [Amps] Acoustic Noise Comparison
From: "Jerry Kaidor" <jerry@tr2.com>
Reply-to: jerry@tr2.com
Date: Fri, 22 Jun 2012 21:36:44 -0700 (PDT)
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Hi,

   I found a spare moment today and couldn't resist.  I popped open the
hood of the Alpha and cut three squares of the "Dynamat Extreme" that I had
left over from my car soundproofing project.  I stuck one square on the L/H
side of the cover, next to ( but not over ) the RF deck.  The second square
went above the power transformer.  The third square on the R/H side of the
cover.

   I also cut up a soft rubber mouse pad and put pieces under the amp,
where the (missing) rear feet were supposed to be, and also under the
(stiff, plastic ) front feet.

   Buttoned it back up, plugged it in, powered it up.  The amp was MUCH
QUIETER.  According to the sound meter, about 8 or 9 db quieter.  Just
as quiet as the 30L-1 in fact.

                              - Jerry Kaidor


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