[Amps] Alternative cooling strategies for SB-220?

[mikea]

On Thu, Dec 17, 2009 at 03:03:20PM -0500, Carl wrote:
> The SB-220 fan draws air in from the rear and the output is split by the 
> chassis to pass over the socket pins and the glass envelope. It exhausts 
> thru the top and side perforations.
> 
> Remoting a fan is impratical due to the friction loss and a big blower would 
> be needed.
> 
> Nice to talk about for 3 days but not very practical.
> 
> As I said before, add a resistor or as another said, go back to the stock 
> fan. However graphite anode tubes need the extra air if those are being 
> used.

Is the SB-220 such that you could put two 110VAC fans electrically in 
series and physically stack them? This would run them at reduced power,
which would reduce the noise, though I'm not sure how much airflow you'd
get from two fans in physical "series". I've used similar dodges to
reduce fan noise in computers and other equipment, and there it has been
pretty effective. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin