150 watt mono Class A/B amplifier to drive 10" subwoofer

Hi,

This amp :http://www.diyaudio.com/forums/solid-state/253726-another-100w-hifi-amp.html could serve you well. it's a TEF blameless design, very good distortion figures, i have made several amps on this design and none has failed over the time and has good authority in low frequencies. you could use sanken transistors instead of on semi njw0281/0302 originally used

Regards,
Aniket