[sdiy] MN3207 and MN3102 Reissues

[Scott Stites]

Hi Again,

> Anyone think these make good Chorus units?
> and be honest, does it sound good?
> any audio examples?
> and, any schematics?

I've been collecting a number of flanger/chorus articles that deal with
these chips.  I hitched my wagon to the MN3207 star a couple of years ago
when I bought some Rat Shack echo kits (they had chinese versions of them in
it).  I played with it enough to know you can get some very good chorus and
flange effects.  I'd prefer the MN3007 because of the power supply
requirements, but those always seem a bit harder/more expensive to come by.

Anyway, as mentioned before, they were/are used in a number of guitar pedal
flangers/choruses, and I'd almost bet they're used in some of the current
synth modules as well.  The Morley Gembox series used them for
flanging/chorusing, so those are fairly good examples of the use of the
MN3207, though they don't use the MN3102 for the clock.  Check out the
Crystal Chorus and Sapphire Flanger schematics here:

http://www.morleypedals.com/downloads.html

I've got a number of other examples that do use the MN3102, which I prefer
mainly because of ease of operation, and you don't have to worry about
waveshaping on the clock.  One of them is an old ETI (I think) article about
building a combo flanger/phaser using the chip set.

In front of me right now I have a couple of schemos for some Ibanez choruses
(one is a dual flanger/chorus that reviewers mentioned sounded more like a
flanger in both modes - it uses one MN3207 and MN3102), and another Ibanez
stereo chorus that uses the same.  I can supply this stuff to you, but the
files are on my work computer and I'm at home now.

Cheers,
Scott