Spring Line Hum

KA4HJH ka4hjh at gte.net
Tue Jul 18 01:46:46 CEST 2000

>Oh, now that's a very nice tip Don.  I'll have to give that a try on mine
>and see how I like it (and see if it has any noticeable effect on the hum
>----- Original Message -----
>From: Don Tillman <don at till.com>
>But I do like the Hot Springs approach in general.  You can even
>improve on it; wire the pickup coils out of phase and add a phase
>switch on the driver coils and you've got a choice of two very
>different reverb sounds AND hum cancelling.

I built a a pair of Hot Springs with four Accutronics tanks from a 
surplus dealer. They're definitely not matched so the effect is not 
perfect, but it does sound a lot better than ordinary springs. And 
they do still hum, probably because of the already-mentioned lack of 
complete shielding (another one of those "someday" projects). I tried 
swapping them around but never could get completely rid of it.

Larry Fast (Synergy) always swore by the Hot Springs...

Terry Bowman, KA4HJH
"The Mac Doctor"

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