[Amps] Alternative cooling strategies for SB-220?

[David H Craig]

    Mine never did that.... having so said, take the old fan, drill some 
grease holes, and put it back in.  Just watch it, however, to be sure it 
doesn't die mid-use.

    Dave N3DB


----- Original Message ----- 
From: "Bill W5WVO" <w5wvo at cybermesa.net>
To: <amps at contesting.com>
Sent: Tuesday, December 15, 2009 6:18 PM
Subject: [Amps] Alternative cooling strategies for SB-220?


>I have a 6-meter-converted SB-220 equipped with the upgraded
> Harbaugh cooling fan, which provides more air circulation volume
> than the original Heathkit fan. It does a great job, but sounds
> like a B-17 revving up for takeoff. My XYL can't stand being in
> the same room with it. What solutions have any of y'all come up
> with to quiet this or similar amps' cooling fans? Like for
> example, are blowers generally more quiet than muffin fans? Any
> other ideas?
>
> Bill W5WVO
>
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