How to integrate Baffle Step Compensation into existing discrete linestage?

[Groundloops]

Searching for solutions for a line level baffle step compensation I came across this:

As I don't want to fiddle with additionial opamps in the signal path, I wonder if it is possible to integrate something similar into my AMB α20 line stages:

Is it possible? And if, how?

 

[Emerson Prado]

You seem to need only some shelving low frequency boost (or shelving hi freq cut), correct? Your amplifier has global feedback, so the only two places I can see such filter being inserted is:
1.Input. A series resistor and cap network, paralelled with R2. It impacts input Z, which will fall to a few k above center frequency. For this reason, the signal source can change filter behaviour.
2.NFB network. A series resistor and cap network, paralelled with R14. Can mess stability if center frequency is high enough - do proper stability analysis.
Best regards,
Emerson

 

[gk7]

Maybe this is of interest:
Loudspeaker Diffraction Loss & Zero PSRR

 

[Groundloops]

You seem to need only some shelving low frequency boost (or shelving hi freq cut), correct?

Correct!

1.Input. A series resistor and cap network, paralelled with R2.

Nah, won't do that. Input Z would be much too low for my uses.

2.NFB network. A series resistor and cap network, paralelled with R14.

Will try that tonight and report my findings.

Can mess stability if center frequency is high enough - do proper stability analysis.

Will check that with my o'scope.

Maybe this is of interest:
Loudspeaker Diffraction Loss & Zero PSRR

More or less the same approach ... Thank you!