Hello. I have searched the forum, but have not found any threads on this subject. I have a JBL SE-401/402 Energizer amplifier. I was going to test it with my ipod to see how it sounded. I hooked up the ipod with RCA cables and one speaker to channel A. All I get is a buzzing noise from speaker. I tried both channels, same sound. No music. The serial number on the front does not light up, so it seems the amp is ok. Any ideas on how to get it working would be appreciated.