[sdiy] New Year clearout - VCO and VCA bits

Neil Johnson neil.johnson97 at ntlworld.com
Sat Jan 3 21:20:20 CET 2009


Some time back I started designing a series of small (2" x 2" PCB)  
mini synth modules ("MSM").  I got as far as designing a sawtooth VCO  
and a CA3046-based Gilbert cell VCA, having 2 each of the PCBs made  
for them (double-sided, through hole plated, tinned), building up one  
of the VCO boards and having a 3U-high (Doepfer-like) Schaeffer panel  
made for it, and a start on one of the VCA boards.

The original (archived) webpage is here:
     http://www.njohnson.co.uk/page/MSM/msm.html

At the time I got the VCO to function over about 10 octaves (from  
memory).

But I simply don't have time to continue these modules with all the  
other synth projects I have lined up.  One notable result of this  
"clearing of the decks" was the completion of the 18dB state-variable  
filter board released a couple of months back.

So I'm offering for sale all of these parts, including some other  
components, as one single package comprising:

- four PCBs (2 x VCO, 2 x VCA)

- one 3U-high Schaeffer VCO front panel

- four unused new-in-bag 2SC1583 NPN-pair transistors

- four 3000ppm/C temp.coeff resistors in surface-mount package (was  
Farnell code 732-369, now 117-4311)

I'll include all the documentation files I have (mainly PDFs of the  
schematics) on a CD as well.

All this for £50.00 or nearest offer, plus postage.  I am happy to  
ship internationally.  I take Paypal for non-UK payment.

Email off-list if you're interested.

Cheers,
Neil
--
http://www.njohnson.co.uk







More information about the Synth-diy mailing list