If it's only a few speakers go around and check the taps on them and add them ll up. See if they're tapped for 25V or 70V. Make sure no one slipped a speaker without a transformer in.

If you've got too many speakers to do this comfortably, get an impedence meter and test the line. If it's under 100 Watts (and it should be under 80) then play music over the speakers. Walk around and see if one or more speakers sounds too loud or too low. Check their taps.

Work it from there. Check your connections and make sure they're mechanically sound. If necessary split the system in half. Run half the speakers (with music or test tone) through them and see if the problem is localized to one section or the other.

Let us know what you find.

Sam


"Where are we going and why are we in this hand basket?"