We just got 2 peavey sp2. And for now we use my Tapco J1400 power amp. This is my bass back up amp. And it is not that loud. What amp would you suggest for these speakers.

Sp2s:
RMS 500watts
Program 1000 wats
Peak 2000

P.S. We are thinking about adding 2 subs and an amp to run them may be next year and use it to run our own shows.