I am trying to update a pair of old circa 1985 Mercury M20's. Does any one know of a source in the UK of the current absorbent material that is used for the internal lining of speaker boxes. Guess I could try Tannoy direct !!!!!!! I notice as well that the internal wiring is rather flimsy........is it worth replacing it with a thicker one ? I have some Cable Talk 3 spare that I could use but am not sure of the results I will get ? Any advice would be appreciated.