I am an Audio Professional and even you guys got ME confused. TOO much to reach and you lose the point. 1) The Sony 1000 watt amp will be JUST FINE. It's a sony and at that price, there is NO WAY you will get a TRUE 100 watts out of it. NO worries of blowing up the subs from too much power. No worries about under powering the subs. 2) Like speedy blue said, Bridge the amp to get the max power out of it and drop the load down to 2 ohms. Usually achieved by using the left channels positive and the right channels negative. unless it is a D-class amp, at that rate, it's already done for you. FOLLOW THE INSTRUCTIONS!! 3) on the speakers, you'll want to connect the Positive from the Amps left channel to positives on BOTH speakers and the amps right negative to the negatives on both speakers. This will give 2 4ohm speakers a 2 ohm load at the amp. 4) make sure you set up the cross-over on the amp. many buttons, lots of choices. Turn the gain knob all the way down, then turn the stereo up as far as it will go, then slowly turn up the gain untill the subs start to distort, then back off on the gain a little. That will keep you from EVER over powering the subs and keep the sound clean as you turn it up, even all the way. hope this helps a little, Dave