[sdiy] mn3207 BBD help??

[Tom Arnold]

On Sun, May 04, 2008 at 06:14:10AM +0000, Dan Snazelle wrote:
> i am having some real trouble getting my mn3207 to work. i have never worked with BBD's before and for some reason they just seem more complicated than any other synth project i have taken on. can anyone recommend a simple or simple enough to follow schematic that will use a MN32xx series chip?
> 

Here is a fairly simple complete delay based around the BL3208/MN3208
http://www.generalguitargadgets.com/index.php?option=content&task=view&id=48&Itemid=80

There was a simpler one that I cant find that used 3 chips, I should have it
archived somewhere just cant find it.

The 3207 should also work in the same circuit, just with shorter delay time.
To just play around with BBDs and make it simpler, you could ditch the SA571
compander and just level convert in and out with opamps.  That would
simplify things a bit at the cost of some sound quality.

Also a while back I scanned in the entire Matsushita book ( thanks to Harry
"Closet BBD Fanatic" Bissell ) and it does have some more detailed circuits
that could be useful for you.

http://www.sdiy.org/BBDHell/

BBDs arnt hard to use, but they are pretty hard to use cleanly...

-- 
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 - Tom Arnold       -  Free Synth DIY webspace http://www.sdiy.org 
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