Hello,

A few months ago I switched my system on only to find the sub  making a popping sound with no bass. I looked at the rear panel and found that someone had moved the crossover to its highest setting. ( Probably my son) After changing the crossover setting  and trying everything I could think of the sub would not work. Today I connected the sub to my two channel rig and it worked perfectly for about five minutes. I noticed the led was blinking and when I turned the  subs volume control up and down the popping sound got worse. Have any of you had this problem.

Thanks!