Paul K. once reproduced a full symphony orchestra with 5 watts on his speakers in an auditorium so in a small room I can't see how all that much power would be necessary unless you really want to deafen yourself. If you are looking for the most visceral impact then go SS, for good tube sound 30 or 40 watts should drive you out of the room. A customer once took the Nelson Reed 804s I was demoing up to 108db and it had that effect on me. Remember that rock bass usually isn't all that low; just LOUD.
Tube Monoblocks for heavy music on Khorns
What tube monoblocks would drive Khorns the best for big bass/heavy metal music? I obviously can't go the SET route for the BEST sound. I was thinking about some BIG monoblocks to help the Khorns 15" driver REALLY move. My room is small. I could even experiment with adding a large sub like a Velodyne HGS18 in the future, too. However, price is an issue. Another interesting Idea, what horn speakers can really compete with Khorn for around the same money for reproduction of bass, Etc??