The CVs are OK to keep for DJ use. Nobody is going to make any cracks about 'imaging' or 'transcendent highs'. They wanna BOOGIE.
I'm not familiar enough with the Quad amps, but if they don't run hot or clip, they should be fine. You might want more power, for larger spaces, but I don't know much about the 'pro' amps like Crown or Beheringer.
CVs are traditionally very good at turning electricity into sound, so if you go in the direction of other speakrs, you'll almost have to get much more power.
I'm not familiar enough with the Quad amps, but if they don't run hot or clip, they should be fine. You might want more power, for larger spaces, but I don't know much about the 'pro' amps like Crown or Beheringer.
CVs are traditionally very good at turning electricity into sound, so if you go in the direction of other speakrs, you'll almost have to get much more power.