OK, here's the deal.
I'm normally a two-way radio tech, but in my current job with a municipality, I've had to pick up on sound distribution. Because we have a whoooole bunch of fire stations in the city, of all different ages, and quality of installation of what we call the 'ring down' system - Dispatch pages out a station with paging tones, the receiver at the station decodes, trips a relay to light the lights, and audio is fed to a PA for distribution throughout the station. Except, many firefighters hands on audio systems make for large clustergaggles. Rats nests. Poor speaker selection, overdriven speakers, you probably get the idea.
So I came up with a basic design, radio to 70V amp feeding new decent and decent looking speakers thu the station. Not hi-fi quality, but the audio is clearer, we have adjustment where needed within a decent range, etc. Workable. And documented, so the next yutzhead that comes behind me is not completely lost. As time and budget allows, we're re-doing stations to rip out crap & install this.
Now: I've got one station that will be undergoing renovation in about 9 months, but before we can get to it, the guys want a speaker in an area not served. But if I put in a standard 70V speaker, tap it for a couple watts, run the wire back to the radio and use another (salvaged) 70V matching transformer in 'backwards' configuration, fed off the radio's internal speaker circuit, will this work?
(radio)(radio speaker, about 4 ohms)--> (transformer, stepping up to 70V)--> (cable)--> (new speaker, with integral transformer).
Or am I all wet? Just needs to run decently until other obstacles are out of the way.
Thanks in advance,