Can you hook up a capacitor to a home AC amp like you would in a car's DC amp? Possible at all?

I have a killer sound system that comprises of a 1500 Watt amp and 2200 Watt (Peak) 1100 Watt (RMS) of speakers. At high volumes the bass quality sucks when it hits hard and the ability to add a large capacitor to the system would (I think) solve my problem by providing that power when it is really needed. Can I do it??? If so, how???