I recently picked up an old DeVry 16mm sound projector for dirt cheap. It's cheap because it's missing an arm, and is useless as a projector without it. Anyway, I am getting an isolation transformer for it so it can be used safely, and converting it into a little combo amp. Normally, I would just remove the oscillator circuit, but since this is transformerless, I need to keep all the filaments in the circuit (and this tube is a half wave rectifier as well as a pentode). So I am wondering if there is anything I can do with the oscillator and oscillator tube. Any suggestions would be cool.