[sdiy] Boards for a parametric EQ?

[George Hearn]

If you are looking for a very high quality voltage controlled parametric EQ
(log scales 'n all).  Two channels/bands could be made from one single
SSM2040 filter IC, configured as two SVF's.  Although these chips are not
available I've made some 'clones' that I have some spare of.  These are
22mmx22mmx8mm with 0.1" spaced legs and 0.7" wide DIL and are electrically
equivalent to the ssm2040.  Two of these 'chips' could make you a compact 4
band Parametric EQ.. with some design effort of course!

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Robert Lorentz
Sent: 10 September 2008 22:41
To: synth DIY
Subject: [sdiy] Boards for a parametric EQ?

Slightly OT maybe,

I have been looking into building my own parametric EQ, looks like the
best route is to use the BP output of a SVF.  To build one EQ would be
like 3-5 of these filters, possibly with different component values to
zero in on a certain frequency range.  Our beloved resonance would not
have to make an appearance for this..

Does anyone have boards for sale of a simple design for this?  Would
anyone have interest in buying some of these if I did a run of them?
(seems like an ideal candidate to cut boards of for DIY purposes)

Thanks,

Robert
_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy