Schroeder 1212 blown High Freq. Compression Driver (AKA the tweeter)

[Revolver]

Yesterday during a rehearsal the compression driver on my Scroeder 1212 (earlier model) was shot. A burnt smell aroma suddenly invaded the air, and upon checking every band member's equipment the offensive smell came from my cab. I immediately noticed the smell was particularly strong in front of the tweeter, so I moved the L-pad and got no response from it (the tweeter). I then opened the cab, disconnected the Tweeter and proceeded to keep playing without the driver. After a while the smell came up again, so I stopped and opened the cab once more, only to notice that the smell was very strong on the L-pad as well (Could it have been that the disconnected wires were accidentally in contact and heated the thing up?). At this point we stopped playing, and decided I would do some further testing back home. Once there I tested the faulty driver, and just as I had supsected, it was dead. Then, to check the L-pad, I took the tweeter from an old Polk audio speaker that I have (which was luckily rated at 8Ohms) and connected it to the cab. It worked. The L-pad did it's job and the tweeter actually sounded pretty nice. Now, I couldn't test the thing at a high power rating due to the time of day, so I am not sure if the L-pad will heat up again after some minutes. Can an L-pad be partially damaged? Or it's one or the or the other (working or not)? [Just to be clear, the thing was at about 11 O'clock, so in theory it was not being pushed hard]

Aside from this, has anyone replaced the old Schroeder Driver (P.audio PHT-409) with the Pyramid (TW46) super tweeter successfully? And if so, did you have to make any major mods to fit it in the hole? Any input on the matter would be greatly appreciated.