Vintage Simmons Drums (UK) Users Group

This is the schematics of the Mark 2 (analogue Simmons ClapTrap), the humaniser is already built in. It was a great idea to use the AC frequency from the PSU to modulate the VCO. A free LFO! This is the Simmons spirit!
Also bad, that the LM566 (VCO) is so expensive these days. Back in the days, you could buy it for a few cents. Now they want 15 Euro or more.

 
  ----- Original Message ----- 
  From: Chris Wareham 
  To: Simmons_Drums@yahoogroups.com 
  Sent: Monday, December 16, 2013 4:30 AM
  Subject: Re: [Simmons Drums] Musicaid Claptrap schematics


    
  WT said on 15/12/13 15:22:
  > Cool !
  >
  > Can you scan it and upload it ?
  >
  > WT
  >

  Hi!

  I've uploaded the schematic to the existing "Analog Claptrap" directory 
  in the files section of the Yahoo group. I'll quote below the 
  description that I added to the file:

  "Simmons Analog Clap Trap schematic. There is no attribution or 
  copyright on the schematic. I assume this was distributed by Simmons as 
  an aid to service engineers, and is therefore freely distributable."

  It's a 300 dpi scan, so should be suitable for printing on A4 sized paper.

  Cheers,

  Chris