Hi all, this is my first post and its a not on a happy note
I moved house and one of my speaker cones now gives out a distorted sound, i have taken it out and looked at it but its like a cave man looking at concepts on nuclear physics

but it looks ok..
Anyway I have two of these speakers (towers) each with two of the same sized cone (both identical) a tweeter at the top and bass cone at the bottom. When I took out the damaged cone and looked at it there are no markings or ratings on it and so cant find out what to replace it with. Can i rate these things myself using amp/volt meter or something of the like? On the back it says the speakers asa whole are rated at 250W ~8Ohms.
They were really good speakers and really good quality sound from them. They are custom jobs done by a friend of a friend and so cant walk into a store and just buy a new one from a certain manufacture.
Can anyone offer a poor soul some advice??