I'm trying to understand the directions provided with my AudioBytes, but I don't seem to be getting any sound from the EPZero. To quote the instructions "If you purchased an Axiom EPZero subwoofer then using the dual purple ended cable supplied with your EPZero, plug one end into the purple output marked “Sub” on your Audiobyte amplifier and the other end into the subwoofer." Firstly, the amplifier has two subwoofer outputs as referenced; however the one referred to as the "purple out" is actually more pink than purple. And the "dual purple ended" cable does not fit in the "purple out". Connecting the subwoofer to the other "sub" out produces no sound. Am I doing something wrong, or do I just need a different cable?