Doug,
As a fellow drummer, I'll chime in with an opinion. If what you are after is for the low end to be more "lively", then strictly looking for slam capabilities may still leave you wanting. I actually found what I wanted by looking for an extremely balanced and well staged speaker top to bottom. With the midrange especially cleaned up, the stage opened up to the point it was much easier to hear the definition in the low end and it was less of a struggle to follow. I especially want to follow the subtleties of the kick and the baseline and that's what really enabled it for me.
I eventually settled on the ProAC Response 1sc (about $2,500 new, but used on the 'gone for under 2k). They may be too small for a 400 square foot space, but they'd fill a 12 x 12 easily.
Bottom line - if you want to get "involved" with the music and really 'feel' it, you need to be able to hear it clearly. Your milage may vary, but something to think about.
As a fellow drummer, I'll chime in with an opinion. If what you are after is for the low end to be more "lively", then strictly looking for slam capabilities may still leave you wanting. I actually found what I wanted by looking for an extremely balanced and well staged speaker top to bottom. With the midrange especially cleaned up, the stage opened up to the point it was much easier to hear the definition in the low end and it was less of a struggle to follow. I especially want to follow the subtleties of the kick and the baseline and that's what really enabled it for me.
I eventually settled on the ProAC Response 1sc (about $2,500 new, but used on the 'gone for under 2k). They may be too small for a 400 square foot space, but they'd fill a 12 x 12 easily.
Bottom line - if you want to get "involved" with the music and really 'feel' it, you need to be able to hear it clearly. Your milage may vary, but something to think about.