Hi, Anybody help me on an amp problem please. I have an old Ampro 16mm sound projector, with its amplifier removed. (Its been converted, and the old amp stripped out). The pencil thin basic PEC that reads the film track is not connected to any circuit, but runs straight through a lead to a 6.5mm jack, to fit into an amplifier.. To get sound an external amplifier has to be used. The exciter lamp on the projector works okay, the PEC obviously works, and is adjusted for best sound response okay. But the problem is, when the jack is connected on a modern amplifier I cannot get any sound at all, or very very low sound.However interestingly I have a CUB 7 Practice guitar amp that does pick up the sound, but obviously a bit distorted,(Guitar Amp!) and not as much volume as I would like. Is the problem the difference in signal from the PEC to a power amplifier or what?. I have a Q240 amplifier with 120 watts output, but can get nothing on it. I have a small, cheap Chinese amp with a microphone output, and have tried that, but still nothing. Advice would be much appreciated.