Any good circuit for active sub-woofer.

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Alvin

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Joined 2003
Hello,

I am planning to DIY a pair of active subwoofer using SS 25W/8565-01 as drivers.
The cabinet should be 50~60L vented.
Now, I am looking for the circuit that need to include:

1) the amplication, preferably using chip amp. (e.g. LM3875 or OPA549)
2) the equalization to equalize the not so smooth SPL
3) the active XO, better selectable.

Thanks very much!

Alvin.
 
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