If you have loudspeaker woofers which have "rotted" foam edges due to age etc. I can replace most types for $20.00 to $30.00 each depending on size & type. Small to large. JBL, Advent, Tannoy, AR, and hundreds of other speaker brands can be fixed economically and work like new with replaced foam edges. Local Practioner no shipping, Expert tech. since 1971. Call (310) 372-9113 Thanks, R. E.