need an tone expert for opamps

[prorms]

I got the software form http://www.duncanamps.com/tsc/
which is for tube amp
iam try to use the vox and e series circuits with opamps
the red and green arrow are point to section that i am not sure were to connect the second opamps ???????

the other schematic is a high and low pass filter in linkwitz-riley in 4 th order 24db/ octave i dont understand were you could put potentiometer to control the tone ??


http://sound.westhost.com/download.htm
esp-lr12- esp-lr12.exe you will need and vb40032.dll to make it run

[teemuk]

Maybe this will help you...
http://www.fender.com/support/amp_sc...ic_-_11x17.pdf

I don't see what's the difficulty unless you try to build an active tone stack. In that tonestack calculator software the voltage source at the left is the input which in your circuit is the output of the first opamp gain stage. The tone control circuit's output is usually taken from the treble potentiometer (unless otherwise mentioned; Fender, Vox and Marshall stacks do this).

The schematics in the software even clearly show the text "out" at the right places! Logically, you connect tone control circuit's output to the input of the preceding gain stage. The load shown by the tone stack calculator (the resistor from output node to common) should connect that as well. Make sure the output impedance of the first opamp stage is the same as the impedance of the voltage source in the software, otherwise the frequency response will not be right.

The software doesn't show all common connections but usually the horizontal bottom "rail" of the schematic is a common connection. (At least it is the common reference of both voltage source and load). This is the case in E-series circuit as well although it doesn't specify a certain "load impedance". Yeah, that funny looking thing that you removed from your E-series schematic (at the top) is a common connection as well.

[prorms]

i dont think this will work for the vox and e series circuits??

[teemuk]

You are wrong. Works fine.