Gale Loudspeaker Repairs
The bass foam surrounds had degraded back to oil, almost! These can be renewed if care is taken. The worst part of the repair is removing the old surround, when this is done, remove the dust cap in centre of the cone with a scalpel and form a tube of paper (I've found 2 layers of photocopier paper is ideal) to go between the pole piece and the coil to hold the cone etc aligned while the surround is glued into place. Drop the new surround into position and glue in 4 places first to line it up, don't allow any forces to be placed on the cone or it will possibly cause the voice coil to scrape on the pole piece. Recommend doing this only on speakers that are worth saving!