simplest way to suppress resonance peak ?

[percy]

I have this little 3" driver that has a bad reasonance peak. Sounds like a halloween horror toy (atleast to my ears).
And I think the way it sounds, its this resonance peak that is causing it. If somehow I smooth that out it could sound much better.



Replacing the driver is difficult because of tight space constraints where it is located, but still while I try to find a suitable replacement is there anything I could do to snub/suppress that resonance peak ? I can't use anything with a big honking inductor or capacitor because there is simply no space in there.
I have been tossing around the idea of this "Twin-T RC notch filter". Would that be a good idea ? I am willing to compromise some sensitivity.

[bjorno]

Hi percy,

You need a circuit that lowers the Q at about 420 Hz 12-13 dB and is adjustable in both Q value and frequency.

A buffered bootstrapped Variable Q Twin T active filter should do the proper job.

Replace the potentiometers with resistors after you’ve found the correct settings.

If you need to adjust the signal level, use the input buffer to form a voltage gain stage.

http://www.geofex.com/Article_Folder...iable_Q_twin_t

B

[percy]

thanks! its good to know its worth trying.
btw, in case you guys are wondering that the resonance peak is not the only problem with this driver - its not exactly a high fidelity application. Its a shortwave/communications receiver, so...