Faces set to stunned

[jhaible]

> Yes, ARP used the 3086's because they were cheaper.
> We used 3086's all over the place, on nearly every product, from 2600
VCO's
> to AXXE VCA's.

I worked thru the ARP Sequencer schemos a year or two ago, and I was
impressed about the use of 3086 arrays for BJTs and CMOS 4007
chips for FETs all over the circuit.

> As for the phaser,
> it warms my heart to know that people are still building it.

It's a truely brilliant design. I was excited about it from the first moment
I
saw it. Just the idea of that all pass filter ladder: Cross coupling the
resistive
element from one side to the other with the BE path of a transistor, and
doing the buffering from C to E in one and the same side of the ladder.
It's mind-boggling to even analyze this - who was the one who invented
it at ARP ?
And then the compander, 3 tracking VC resistors built from one inexpensive
4007 chip, and it works so nicely !
The hybrid high impedance instrumentation amp that acts as a pickup
for the end of the ladder is remarkable as well. (I have omitted that
in my version, because low noise FET input opamps are no problem
today, and much cheaper, but anyway ...)
And the combination of Germanium diode clipping and the compander
that makes this clipping even more gradual and smooth contributes
to the unique sound at high resonance as well.

Hats off to the designer of this !

JH.