I disagree with soundman on this one, when you wire the amp to the highest ohms the amp will not make full power. The amp is rated at 175 watts per channel at 2 ohms. it well be much less 7 or 8 ohms. When you wire them in parallel with one 4 ohm speaker and one 3 ohm speaker you will get 1.71 ohms, close enough to 2 ohms for me. The amp may run a little warm but should be ok.