I cant get the (era 10 powered sub woofer) to come out of stand by, there is an led light that when you flip the power switch on turns red, when the woofer powers up it should turn blue, it is a 300 to 600 watt powered sub woofer with low pass freq. setting , polarity lift, speaker phase switch, eq. switch,and a low pass switch. I checked the fuse(ok) The only logo on the cabinet is (era) it is a natural wood cabinet with the ce logo for electronics, I believe it's made by "audio control"