Recently, I've found repairing, restoring and most of all listening to vintage AR and KLH speakers to be a very addictive hobby. ? Anyways, a couple days ago, I was lucky enough to come across a pair of AR-4x for little more than lunch money. All drivers are original and working, the grills are in great condition. The cabinets for the most part are in pretty good condition too, except for one big issue: the diagonal cabinet joints where the side boards connect to the top have started to split or come apart at the edges so that there is now a gap of about 1mm on one joint and about 0.5mm on the other. They seem to have been stored in a basement or garage for many years, stacked upside down so that the top of the speaker in question was sitting on the ground soaking up moisture all that time. Since it's the top of the speaker, it's pretty unsightly.
Has anyone encountered a situation like this? Any thoughts on how to address this issue? My first idea was to use some kind of wood filler in the gap...