Totally agree with Dan. Get rid of them, they're useless and will soon break or get trashed. If we wanna run the Cave like a proper rehearsel room, then its time to buy some semi decent, insured, waranteed equipment. Nix...you know who to talk to about this, or simply go to Edinburgh Gumtree as amps are always on there for cheap. This is getting even more important if we are going to be having a mini studio next door!
Having crappy equipment is worse than not having any equipment at all, people will get frustrated and not come back. I say, buy some better stuff, or run everything through the PA.
We have a good mixer and PA system, a great drumkit, and a good space. We're sooo close to having a fantastic rehearsal room.
We need to decide, whether to make people bring their own guitar amps (not a bad idea) or buy some(also not a bad idea).
The Cave looks great Nix by the way.