I actually have a system that is very close to this. The turntable has a variable-reluctance cartridge, and I hardly ever take it off the 78 RPM (78.26, actually) setting. I usually keep the stylus weight well under an ounce, too.

There is one coax from there to the amplifier, a Capehart tube job with 6L6s in the output stage. This is a pretty cool amplifier because the preamp stage has infinitely variable turnover, so when you go from the 78s made before microphones were used, to the ones with a 100 Hz turnover, to RIAA ones, to English FFRR recordings, you can change the turnover in an attempt, by ear, to make the playback have a flat frequency response, all the way up to the 8 or so kHz that several of these records have.

I hate to disappoint you, but the single coax stops there. I actually have use two-conductor wire to go to the loudspeaker from the 8 ohm terminals of the output transformer. Coax at that point of the circuit has been known to make the amplifier oscillate, which blows the tweeter in my speaker. It's really irritating to have to fix the tweeter, because for some reason people want to sell me parts in pairs.

It is wonderful to listen to, as well, as the sound comes from all over the room. Mostly from the speaker, really, but I am told that every room has reflections at different frequencies, so I am sure it is coming from all over the room.

Yup, one single coax WILL DO IT!