Well after replacing the amp (hissing sound when off)in my 3 month old EP500 my replacement amp is now acting strange. Several times when I have turned my system on to listen to music I have noticed no or very low amount of bass. The light on the back of the sub is green but sub is not producing hardly any sound. The problem is fixed if I cycle the power switch off and then back on. Sub will then continue to work correctly for the next day or so until the problem reappears. I don't listen to crazy loud volume levels that would trip internal protection.
Any ideas?