shaggy555

Almost certainly the HF driver (to be precise, the horn is what sits in front of the HF driver). As well as checking the resistance as Doug says, you could also feed *low level* audio to the driver to see if it produces sound or not - headphone level is ideal for this. But unless anything has become disconnected, which is unlikely, my money is on the driver being dead. A quick Google for B1520 replacement driver doesn't come up with any UK sources - though there will be some. Yeah you guys are right, driver appears to have gone, 100% resistance! I've tried another horn and it works so I am confident the cross-over is okay... Do you think it is worth getting just the diaphragm (there seem to be a few on Flea-bay) or do I need whole driver assembly? And any suggestions for UK suppliers would be great!!!(not too confident of Flea-bay!)

Hi I've got a pair of these in our school P.A. One is functioning fine at full range, the other seems to have lost it's top-end... Any ideas? I've got it on the bench atm... and when I put test signal thru it I get no response thru the horn... I have (visually) checked all the connections I can see and all looks good... Could someone point me in the right direction for what exactly I should test to determine if it is the horn itself or the crossover... Many thanks in advance (not done much speaker maintenance before, but needs must)