Reduce 55Hz with an active filter

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Progg70

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Joined 2004
Reduce 55Hz with a active filter

Hi!
I have a big resonance in my listening room for 55HZ. I would experiment with an active filter in the signal way, between (preamp and power amp) that reduces that frequency.
Please can some one give me a schematic for a filter with an OP in it.

Regard
 
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