1. Do they say in the specs what the audio power is at the headphone output? 2. Did you compare it to another radio? It could be a problem in your panel, like my low-volume problem.
Our plane had some really idiotic wiring. I don't know who did it, but I think it was done by an avionics shop in Washington. For those of you who are electronics-minded, the El-Cheapo Terra audio panel doesn't use a summing amp in the headphone circuit, it's all passive. Connect COM-1, and COM-1 is connected to the headphones directly. Connect COM-2, now COM-1 and COM-2 are both connected to the headphones...a 3 dB reduction in volume. The more things that are connected, the more drop there is. To make things worse, the "avionics shop" put series build-out resistors in the COM radio headset lines to increase the impedance to that of the rest of the equipment, and the result was that you couldn't get enough volume from the COM radios. Jack, my COM radios (Narcos) have two headset outputs. One is louder, but the inpedance is lower so it might load down another radio if you have an audio panel like mine. It won't hurt anything, just make other radios quieter when switched on. Did ou have an avionics shop put it in? Do you have a schematic of the radio? At 08:37 PM 1/25/99 -0500, you wrote: >Have just installed a used Val Com 760 radio. It is a nice >set, but one problem, low volume. > >Has anyone else used a Val Com and could give me a clue >on how to increase the sound. At full volume it okay on >the ground, put that's no fun. > >Have went back over the wiring several times, all is >plugged in correctly. > >Jack >99069 > > ---------------------------------------------------------------- Steve Dold ([EMAIL PROTECTED]) http://home.pacbell.net/sdold/ Say NO to useless over-quoting ----------------------------------------------------------------
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