moving air is moving air, with good parts, in properly designed enclosures. seems like yours are.
some old designs are still fabulous.
removable covers? inspect the cones/rings, spring action while off and while playing music.
most any driver can be re-coned, get another 15 years. My 15" woofers, made in 1958, cloth (not foam) surrounds, the paper weakened (and who knows how tired the cloth surround was (didn't appear so).
Pro re-coned them, many years later I bought the kit and re-coned them myself. Videos help, it ain't rocket science, hardest part is cleaning the old mounting ring off.
I re-coned my Velodyne 12" sub (foam surrounds), sounds like new.
some old designs are still fabulous.
removable covers? inspect the cones/rings, spring action while off and while playing music.
most any driver can be re-coned, get another 15 years. My 15" woofers, made in 1958, cloth (not foam) surrounds, the paper weakened (and who knows how tired the cloth surround was (didn't appear so).
Pro re-coned them, many years later I bought the kit and re-coned them myself. Videos help, it ain't rocket science, hardest part is cleaning the old mounting ring off.
I re-coned my Velodyne 12" sub (foam surrounds), sounds like new.