If there are rubber surrounds what about a "Rubber Rejuevenator" (spelling)?
In the Printing industry the ink is transfered from a metal plate to a rubber "Blanket", these Blankets are treated with a liguid wipe on Rubber Rejuevenator to extend the life of the blanket, I am in no way saying this is a good idea for speakers just asking a what if question.
In the Printing industry the ink is transfered from a metal plate to a rubber "Blanket", these Blankets are treated with a liguid wipe on Rubber Rejuevenator to extend the life of the blanket, I am in no way saying this is a good idea for speakers just asking a what if question.