Argh. These things are a lot of work. Staples, staples, staples. I got the sides off. One was loose and popped off without much effort. About half the plastic fasteners were broken. On the other side I put the claw end of a mini crow bar (the thin steel type) in the joint at the top and hit it with a hammer. Top of the side came loose. I took off the bottom and did the same to get bottom of the side it loose (must disconnect wires to get bottom off). Then I sharply pulled. Side off with no damage to the fasteners. After untying the sock and removing about twenty staples I can see the mids. To get at them will require removing more staples down the sides. Two rows of twenty staples each side (about 80 total). Won't have to remove all to get at the mids.
Surrounds on the mids need to be replaced. On the front the surround looked good but dented when I touched it. Back surround on mid is hanging half off.
Before pulling any more staples, I'm going to put a little sound into them to check that each driver is working. If not, it might not be worth doing much more.
I will say that I am VERY impressed by the construction quality and the materials. The cabinet construction of these vs. my JBL L100T is like comparing a current BMW 5 Series with a 65 Ford Mustang.