[Radioroslyn]

Some of the spkr cones are held down with sheet metal screws along the perimeter. If not you'll have to use a solvent like acetone or mek to remove the adhesive. Start small by wetting edge and work your way around slowly. So do you have the chassis and cabinet too??

Have you tried to measure the resistance of the vc as close the coil as you can eliminating the possibility of a bad connection or bad hb coil?

Terry