[sdiy] EH frequency analyzer

Tom Wiltshire tom at electricdruid.net
Fri Aug 8 16:00:04 CEST 2008

On 8 Aug 2008, at 14:40, John Mahoney wrote:
> The Moogerfooger ring mod looks to be based on the LM13600. (Hey,  
> isn't the 13600 all but extinct? I wonder what Moog is using now in  
> these pedals. Maybe they've got a stockpile.)

National Seminconductor still have the LM13700 listed. I never  
understood exactly what the difference was supposed to be between  
LM13600/LM13700 ( was 13700 a later upgrade?) but they seem to be  
pretty much interchangeable.



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