[Amps] Fan Noise in GS-35b Amplifiers

[Glen Zook]

I have a muffin fan to cool my pair of GI-7bT 160-meter amplifier.  The tubes definitely run cool.  The noise level is relatively low.
 
Glen, K9STH


Website:  http://k9sth.com



On Thursday, February 20, 2014 12:30 PM, "donroden at hiwaay.net" <donroden at hiwaay.net> wrote:
 
Quoting Carl <km1h at jeremy.mv.com>:

> Dont overlook a good muffin fan either. The EBM Papst 4600N was used  
> in later production LK-800's using the 3 3CPX800A7's at about 3100V.  
> That is a lot of fin area and back pressure.

I ran a quad of 4cx250b s using a pair of stacked muffins for the  
extra back pressure.  fairly quiet and compact.

Don W4DNR

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