Nick,
You lay the speaker down flat with the electrostatic element facing up. Now take a piece of wood and a hammer and tap on the bottom if the wood rails. after you tap them up about an inch or so the rail will come off. You can then see how they are attached. Do the same to the other side. After the rails are off the metal cover over the woofer can be taken off. once this is off,you just remove the woofer from the front of the enclosure.
You lay the speaker down flat with the electrostatic element facing up. Now take a piece of wood and a hammer and tap on the bottom if the wood rails. after you tap them up about an inch or so the rail will come off. You can then see how they are attached. Do the same to the other side. After the rails are off the metal cover over the woofer can be taken off. once this is off,you just remove the woofer from the front of the enclosure.