so your applying a signal to it like a music/movie and it won't turn green once it receives a low frequency signal? Has it ever worked and just stopped? Do you have the receiver setup to send low freq to the sub?

sorry for the simple questions..

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85