Author: Kaz Kylheku
To: Darrall Dougherty
Subject: RE: Wow: quite a difference from replacing the EQ section op-amp!
On Thu, 6 Dec 2012 11:23:20 -0600, Darrall Dougherty
> So can you tell me which ones in the attached layout you replaced
> with the NE5532?
On the main board, I replaced U4, U8, U10, U11, U15, U18. (Also U17
with the MC33079 quad op-amp, and U7 with a SA572 compander.)
I left in place U12 and U22. U12 is an existing NE5532
(master volume circuit) and U22 is another NE5532 (chorus section),
although TL071 is written on the schematic.
On the MIDI/rear-jack board: U9 and U10. One of them was an NE5532,
but I replaced it anyway.
I in place U11, which is the basis for the rear input jack which
I don't use, and is an NE5532.