I recently picked up an old Traynor 215 cab. Internally the speakers are isolated to their own "box". Two 8ohm speakers wired in series for 4ohms. I want to rewire it so if I want to I can run both speakers at 4 ohms (as it is now) but ALSO have the option to run two channels separately, one into each speaker, at 8ohms. I have basic wiring knowledge, but have never played around with the wiring in any of my cabs before. Can anyone help me out/lend me some advice? The main reason I want to do this is because I want to run two Epiphone Valve Juniors through it for dual 5w, for g*****.