Active filter for subwoofer

Thread Starter

Petrus Armagedon

Joined Jul 1, 2011
Hello all!
I want to create an amplifier for the completely subwoofer. I made 200W amp and now I need a schematic or project for an active filter for the subwoofer. Filter that can be Includes the amplifier outputs 100 watts and frequency control has the possibility of 40...120 Hz with the decline of 12...18dB.
Thanks for your help;)