i have 4 6x9 speakers, and a 1300watt sony xplod sub and a 1200 watt sony amp.. should i power my speakers to a seperate amp ? orrrrr would the blow up.

If you find a correctly sized amp for the 6x9's, no damage would be done. I don't think you are implying this, but don't power them off of your sub amp... Some clarification on what you are asking would be great. It would be easier to help you out.