MOTM

All, 
  this patch is explained in Vail's Vintage Synthesizers book.  The patch is shown with a 2600 in mind.  I tried it out two days ago, but I have no clue as to what the authentic "Frankenstein" sound actually is so I'm not sure how close I got.  It sounded cool though..  It had to do with FM of the VCF with res fully up with a sine VCO at a high frequency (couple thousand hz).  The VCA was controlled with the AR env gen and the ADSR was I think controlling the VCO and filter also..  AR and ADSR were clocked at around 4-5 Hz Hmmmm.. anyone got that book nearby? (I'm at school)  The book said to slide the  VCF'S ADSR CV amount slider up and down to the beat.....   hmm  
good luck    
~Steve
(along the way, I stumbled upon the vowelly sounding filter FM ting mentioned on AH recently.  I found that byt FMing the vcf with a sine and having the vco and vcf cutoff at around the same freq, the vowelly sounds came out.  it happened at around 125hz and a little below 1000hz..  but who knows how out of tune this 2600 is.. anyone care to explain these frequency/sound  relationships for us??)