Restoring Altec A7-500's. Project going well until I attempted to remove a woofer. Removed 4 bolts and speaker remained stuck in place to back board. How can I remove speakers without damaging them. I would have to refinish the cabs with them in place and covered with plastic, front and back. Also if left in place, the original tar/sealant around the cone sticks to everything. Anyone have an idea? Much appreciation.
Jimmy-time