Ha! Ok, I have this idea....I am looking for a combo amp that will push some serious loud lows. I want to drive it with the "subwoofer out" jack on my DBX 120XP Subharmonic Synthesizer as a sort of active subwoofer idea. I would be looking for something big, 500-600w's, at least a 15" but an 18" would be ideal. Do they even make something like this? I would have a regular small, toneful rig with my Mesa head and DBX then add the sub for bigger stages. Any suggestions.....?