A tube 15 watt would overpower any drummer. :?
Add to that – one watt at one meter will cause permanent ear damage.
Going about this another way would be an Adrenalinn III into what ever 'make louder' device you care to put it into. A full range speaker will certainly sound better though.
In my mind if you don't consider the PA/Mixer as an integral part of the band sound you are doing things very, very wrong.
The best sound I ever heard was Amanda Marshall in London. Everyone was using modellers/plastic kit for drums/keyboards. In ear monitoring for everyone. No sound on stage at all therefore no spill into the vocal mics. Whatever came out of the PA was pure ear candy, mixed so you could hear everything in its place. And for the first time ever I could define a stereo mix live.
Loud guitar amps are used as crutch for the less than talented who insist on winding up their current 'this is the bollox' amp to stupid levels in order to get the power amp working at its optimum. **** the lot of em!
Plum