[Amps] L-4B Switch

[Jim Brown]

On Mon, 05 Sep 2005 11:06:18 -0700, Marv Gonsior wrote:

>The consensus is that the root cause of the failures is the
>probable high inrush current to the power transformer so 
>anything that can be done to limit it will alleviate the problem.

A company I know from the pro audio world makes a product that addresses 
this problem. Check out the ICE modules made by SurgeX. 

www.surgex.com

http://www.surgex.com/products/ice20.html  

They're well respected in our industry, located near Philly, their marketing 
mgr (Don Kugler?) is a ham and pilot. Their main products are series-mode 
surge suppressors. Turn-on surges are a common problem with big sound 
systems, as dozens of big power amps all get turned on at once, each with a 
large inrush current to charge filter caps. 

Jim Brown  K9YC