[sdiy] Reverb modules

[David G. Dixon]

> The Belton patent gives a very detailed description of what's inside. It
even has the math. But, get yourself 3 PT2399s and a PCB and the other parts
and $18 won't seem too bad.

> I agree. $18 doesn't seem bad at all. 
> I think springs are a very different sounding reverb, too.
> An Accutronics tank will cost $25 or more. Slap a VCA on the front end and
a Xfade of the wet/dry mix and you're in business.

Yes.  I've had a quick squizz at the Neunaber patent application, priced the
PT2399 ($4 per, or 3 for $12 at Small Bear) and concluded that it's
definitely worth it to use the Belton brick.  I only wish I'd learned of
this before I placed my recent huge order with Small Bear!  Now I'll have to
wait for my wife to forget about how much money I've spent before I can go
back to the trough!

Having said that, I really like the idea of having actual springs inside my
modular.  It just doesn't get more analog than a bunch of springs, does it?
Plus, it makes a nice crashing sound when you give it a whack!