Subwoofer amp need

[madam]

Hi all,

I've finnished my bpa300 amp for my main speakers. (Thanks for the sch. 4 Alexw88 again)

Now I'm still working on a powerfull PSU 4 the 2 BPA300 boards, but I would need an amp sch. 4 a subwoofer (peerless 830500) wich can deliver 1-200 watts with very low distort and other values, wich are essential for a good sub.

I want to use it only in the bandwith from 20Hz to 100Hz (maybe up to 150)

if anyone have a good Xo sch. to make this. I would need only a sub Xo... not a 2 or 3 way kind. (fixed subsonic filter + a variable /prefered fixed/ 100, 120, 150Hz 3rd order)

I would like some push-pull config. since I've built a BIG horn for sub.... small noise, 0V offset and other goodies would be essential

Thanks in advice