Talk Back Systems

Talk Back Systems were touched on by Dave Allen and others in his recent "Understanding Radio Mics" article. Our theatre currently uses some UHF CB radios with headsets, sometimes with mixed results. Accidentally locking mics open, interference from outside public users, time delays in signal transmission, loose connections... the list goes on. A wired in system would be a great alternative. Unfortunately from what i have seen the commercially available ones are a little out of our reach for what i consider a basic set-up, 3 maybe 4 headsets in a small theatre. 2 either side of stage, 1 possibly 2 for the Bio Box. I have often thought about designing and building a set-up based on an old amplifier. I'm an electrician with an interest in electronics and can visualize a simple design. But would it work? Is it possible and has anyone built their own wired in Talk Back system?