Model Vs now running with replaced titanium dome midranges (really easy - 4 screws and 2 drops of solder each). Replaced the speakon connections where they meet the speakers because those seem to get much more wear than the connections at the amplifier. Probably the result of adjusting speaker placement puts stress on the cables. Anyways, used the wrong kind at first (first time with Neutek connectors) and they were a real challenge and didn't work well. Realized I'd bought really neat speakons that require a commercial-grade solder to attach the wires. I just used friction. Oops. Anyways, acquired NLF4C connectors; they use small screws to snug up the bare wire. Those work great - a five-minute job anybody can do. Unless you're me, and you neglect to carefully transcribe the wire colors to connection numbers when dismantling the old connectors. So here's the wiring guide figured out by trial and error for the servo bass cable to the numbered SpeakOn terminals: -2=black, +2 = red, +1=red/white twisted -1 = green/blue twisted. Neutek has a clear pdf guide to how the connectors fit together; if you buy them in a shop or online they will not include the instructions.
Next would be to get the amplifier recapped (doesn't need it that I can hear, but given its age it seems prudent) but I've not found a shop yet that's willing to take that on without benefit of a schematic.