[sdiy] more sh-101 mods?

NATE! timexheater at comcast.net
Thu Dec 1 08:55:26 CET 2005


ok i have been starting to plan on modding my sh-101... i'm not really
interested in the alternative PWM or LFO routing stuff, but some of the
other mods are a given... these are the ones i'm planning on doing:
- ext. audio in
- triangle wave mix
- square/saw/tri/noise out
- filter CV in

now i was wondering about some other mods that i haven't seen done
anywhere...
what i'd really like is CV in for the decay stage of the ADSR, and CV in for
resonance on the filter...

i don't see why they would be much different than doing the CV in mod [but
of course i'm probably wrong :P]... shouldn't a basic CV mixer after the
sliders do the trick?

i know some of the levels in the ADSR are 5v, some are higher, but i'm not
too concerned about accuracy - the increase on the decay is going to be
pretty small...
the reason i'd like to control the decay and res [in addition to the other
stuff] is to increase each of the settings a small bit to use as an accent
input...

if someone could give me a hand with these i've got the service manual
online, with the schematic page here... ADSR and filter are towards the
right.
<http://www.robot-dreams.com/misc/synths/sh-101/sm/sh101_7.gif>

by the way, back when i first got and fixed my SH-101, someone emailed me
about buying their spare one for parts... if it's still available it would
be cool if you emailed me again!

thanks for any help!

- nate




More information about the Synth-diy mailing list