Question on lxh marshal symulator

[donald stringer]

I am about to start building this thing and had a question on the schem. I noticed that there werent any Vr. connections made. Is that something that was just assumed we should know or is it just a matter of connecttiing +9 to op-amp pin8 and -9 to op-amp pin 4. For ref. I am using tlo82 and just building pre-amp portion w/o cab sym.

[Doug_H]

With a bipolar pwr supply (+-9v) Vr is 0.

Doug

[MartyMart]

I built one a while ago Donald and also skipped the very LARGE speaker sim section.
It works well with the Condor and even better with the more simplified marshall sim that's
floating around.
That only uses 2 x dual op;amps, it also sounds quite good through the Behringer GDi 100
which includes a nice speaker sim output also.
I did tack on some roll off onto mine, using 2x 15k's with 2n2 to ground from each, ala ROG
that helped to remove the very high end that was causing a problem, sim then follows that.

MM.