Antwort: [sdiy] AN6912 IC in TR-808?

[Colin f]

----- Original Message -----
From: <Christian.Bergmiller at daimlerchrysler.com>
To: <jorgen.bergfors at idg.se>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, March 13, 2002 10:30 AM
Subject: Antwort: [sdiy] AN6912 IC in TR-808?


> while i was building the handclap section of the 808 some time ago i
noticed an
> error in the
> schematics from roland.
> C140 is noticed as 2n7
> handclap started working when i changed it to 27n...

Did your clap not work at all ?
I used the wrong value initially, and instead of getting the 3 rapid falling
ramps inthe envelope, I just got one - the sound was less crunchy, but
without a real 808 clap to compare it to, you might not notice.
I built the 909 clap just after the 808, and the circuits are almost the
same.
I noticed the difference between the cap values between the two, and fixed
the error.

Colin f