Genz Benz NX2 tweeter fix?

[Pinball]

Hi, I have a GB NX2 212T and the tweeter doesn't seem to function.

The story goes that when I got it a few months back I put my electro acoustic guitar through it, rather than dig our another amp/cab and damaged it somehow. I usually have the tweeters turned down to zero but turned them up to about half and played for a few minutes. Then all of a sudden I got some high pitched feedback. Since then no noticeable tweeter adjustment !!!

Like I said I don't use the tweeters normally anyway but I keep thinking that I really should get it functioning as the makers intended. Any advice on what procedure to follow?

[LawrenceH]

I'd have the tweeter out, take it out of circuit and check the resistance across the terminals with a multimeter. If it's dead then you'll need a new diaphragm or replacement tweeter unit. If it's not I'd check the continuity of the wiring and then move to the high pass side of the crossover, and/or attenuator.

[Pinball]

Brilliant, thanks for that, Thats the sort of overview I needed. Although I have to admit that I'm going to have to look up some of those terms as I go