Questions About the Event TR5 Schematic
Paul wrote:
So it's normal to NOT see any signal on the input differential pins 2
and 3, right?
** Depending how the inputs are driven ( one, the other or both) you may or may not see any signal on op-amp pins 2 and 3.
I was driving only pin 2, from the unbalanced RCA input. But
there didn't appear to be any signal on either pin 2 or 3.
** Pins 2 and 3 stay near identical in normal operation.
If you had driven XLR pin 3, op-amp pins 2 &3 would both have half the signal voltage on them.
My sig gen signal only appeared before R20, and on the output pin 1.
I recall learning about virtual ground in this topology.
** Yes, that is what you had.
..... Phil
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