[sdiy] MN30XX, MN32XX differences (was CA3080 deal on Ebay)

Scott Stites scottnoanh at peoplepc.com
Wed Jun 14 17:12:30 CEST 2006


> hehe.  Welll...the pin diagram looked the same save the six n/c pins.
> SO I just socketed it and like I said it distorted until I installed a 
> trimmer to kill some level.  And now it's ok signal wise but very 
> noisy compared to the original setup.  I'm hiking for a couple days.  
> Thanks for the good thoughts and if anyone makes a crack at that 
> mystery Siel problem and gets it I'll send them some kind of prize :) 
> -Bob

The MN3004 can be a notoriously hard beast to find around here; at least it is for me.

It's pretty easy to get an MN3007, though, which has the same pinout as the MN3207, but the same supply/distortion, etc. specs as the MN3004.  Of course, the MN3207/MN3007 have twice the number of stages of the MN3004, so it's not going to sound the quite same as the MN3004.  If you can find an efficient way to double the initial clock frequency, then it would sound pretty damn close, providing you still have a nice, crisp clock waveform.  If they're 'droopy', you'd have to buffer Cp1 and Cp2.

Throw Small Bear some business, they have the MN3007.

Cheerio,
Scott

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