[sdiy] Ultrarough draft of my hot-rodding of the Music Easel ring mod

[Simon Brouwer]

Aaron Lanterman schreef:

> (Note the 5532s are really supposed to be 4558s, which are the closest
> thing I found to the out-of-production and weirdly-pinouted RC4136
> used in the original easel;

Only the weird pinout would be the obstacle then:
http://focus.ti.com/docs/prod/folders/print/rc4136.html

According to TI's data sheet (of 2002) the extended temperature variants
"RM4136 and RV4136 are obsolete and are no longer supplied" but apparently
RC4136 is still in full production.

Farnell has them:
http://nl.farnell.com/texas-instruments/rc4136n/op-amp-quad-gen-purpose-4136-dip/dp/1106011

-- 
Vriendelijke groet,

Simon Brouwer
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