Try this website:
http://www.celloseattle.com/ctdocs/prodserve/speakers/speakers.html
They are wonderful speaker but even with high efficiency, need good power Amp like the Krell FPB series...
http://www.celloseattle.com/ctdocs/prodserve/speakers/speakers.html
They are wonderful speaker but even with high efficiency, need good power Amp like the Krell FPB series...