[sdiy] power one supplies

davidas 'el malaralio' james wdave13 at qwest.net
Wed Jan 9 07:21:25 CET 2002


aloha there - the synth-diy arkive seems to be down. was wondering if someone could push me
in the right direction on using two 15v+/- power one linear
supplies i picked up - i have lost the info sheets and not
sure how to wire it up exactly - have fuses and fuse holders allready. private reply might be best! thanks again
(they are power one international series had15-0.4-a)

dave wright
www.notbreathing.com
www.carrionsound.com

  ----- Original Message ----- 
  From: DTK 
  To: synth-diy at dropmix.xs4all.nl 
  Sent: Tuesday, January 08, 2002 10:31 PM
  Subject: [sdiy] Concertmate MG-1 mods/schematics


  Hello from the new guy :)

  I've got an MG-1 that I found at a pawn shop and resurrected. Man, do 
  I wish I had found this group about 6 months ago! :) Anyway, it's now 
  in good working order, and I've made several mods to it, installed a 
  MIDIJack, etc. 

  For my next mod, I've decided that I want to try and slow down the 
  LFO rate. If I understand correctly, the LFO in this machine is just 
  another VCO. There's a slider type variable resistor for the rate 
  control, where lfo rate increases as resistance decreases. SO I was 
  thinking that I could just insert an extra resistor in line and that 
  would slow things down.

  Of course not... that would be too easy, wouldn't it? :) I tried it 
  out, soldered a 22k resistor in at a couple of different points, but 
  there was no change (as far as I could tell, anyway)

  Is anyone here familiar enough with this little quasi-moog to help me 
  out? I'm really not even sure if I have the right idea or not. I've 
  been using schematics for the Rogue, which is (supposedly) nearly 
  identical in design. I've been unable to find any schematics or 
  technical information about the MG-1 online, so if anyone knows where 
  I can find anything, please let me know. 

  Thanks for any help you can provide...


  Duane



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