I just managed to remove all of the speakers from the enclosure, about two of the mounting-screws seized-up and broke while I was removing them, that's ok cause the speakers are going to be replaced anyway, turns out only one of the original speakers is still good, the voice coil measures about 6.5 Ohms or so on my digital multimeter, but that could be erroneous so I'm not going to take it as gospel.
The insides of the cab could do with a decent clean-out, which I might do later on this year.
I gave the insides of the cab a bit of a spray with some air-freshener cause it doesn't half have a bit of a pong to it, it's all sorted now though.
Ok, so why were the other three speakers not working?, pretty simple really, the short pieces of flexible wire connecting the voice-coils to the terminals were broken, and even non-existent in a couple of the speakers, rather than try and repair them, I'm just going to cut-to-the-chase and replace the lot, all the original acoustic dampening material needs replacing too....did I mention that the cab needs a decent vacuuming-out and clean as well?
I've pretty much done all I can with it for the time-being, so I'm going to leave it alone till I can get replacement speakers and new acoustic dampening material for it, and etc.
Last edited by DrNomis_44; 16-11-2020 at 01:38 PM.