None

Buzz on any bass note. These are rated with a lower freq. range than my fronts and my front speakers can play lower, louder, cleaner than these.

Tried to setup three different ways. These speakers always buzzed in every configuration. I was trying to use them as rear fill speakers and they are terrible. Using Phoenix Gold Titanium amp with 75W RMS clean power. I can't even play them loud enough to get rear fill with the front speakers I have. So, don't waste your money on these.