Howdy,
Last message didn't post (don't know why).
After a year we finally got our church's no.1 loudspeakersafely on th ground. It was missing HF reproduction. Isolation testing shows the HF driver works, but the HF output from the crossover does not. Piece of a large resister was cracked and fell off when I pulled the rear panel out. Darkening of the circuit board around the base of the resister and blistering on the reverse side, plus loss of signal and continuity on the HF output wires, indicates the crossover (well, the HF side of the crossover) is fried.
The thing is riveted to the rear connection panel, which also has the speaker connections and the hipass attenuation switch.
So far I have been unable to locate the part online. If some one could please point me in the right direction, I'd be appreciative.
Thank you,
Ken N.