http://www.audioheritage.org/vbullet...3&postcount=54
Follow this link for details, I am NOT the designer and have no affiliation with Greg Ball other than he is located in Australia.
I do think however this design will slaughter anything commercial under US$3000 based on my auditioning including a lot of the absolute junk people around here insist on buying over on Ebay.
My motive for building this up is to enable comfortable listening in the Australian 40+ c summer days. The intention is to build up a 300 watt version for bi amping the woofers early next month.
Too hot for class A and in many ways its as good.
Ian