i found one of these amps cheap and ive herd nothing but good about them i read up on this model and it said it can run 320 watts if bridged could it power one l7 12
Sure. With the dual 2, coils wired in series for 4 320w should be plenty of power to get decent performance out of it. It's a 750w sub, so you obviously won't be pushing it to its optimum, but it should work ok.