so whats the feasability of using a pre amp into a PA power amp too run some big old speakers? cos i saw these on ebay an was considering getting a pair http://cgi.ebay.co.uk/Mega-1000W-DJ-Disco-PA-Double-15-Speaker-Bass-Cabinet_W0QQitemZ370325745715QQcmdZViewItemQQptZUK_ConElec_SpeakersPASystems_RL?hash=item5639227033
