Bridged T EQ peaking cut

[ed rees]

I'm using the formulas in the Tremaine book to design a -10dB passive EQ with peaking cut.

Trying to get a -20dB bell-shaped peaking-cut at 10kHz. So far what I have only gets it down to -14.5dB. I know there needs to be another inductor somewhere near the 434.4 ohm resistor, and maybe another capacitor, but nothing I try works out quite right.

Does anyone have any experience designing these, or know of another good reference book I can check out? Any help would be much appreciated, I've reached a dead-end. Thank you.

 

[emrr]

The schematic isn't loading for me, so I can't say for sure.  Common mistake with T circuits is loading.  If you load it for the design impedance, you get more cut.  If you don't, you get less. 

 

[ed rees]

I've figured it out, thanks.