Studiomaster
03-06-2006, 02:01 PM
I just got my 127H woofers back from refoaming (at long last). I popped them back in the cabinets and they sound great. Now for the problem: One of my dome tweeters appears to have died, coincidentally.
I took the woofer of the offending speaker out and checked all the wires inside, thinking that perhaps I had disturbed the wiring either when I removed the woofer or when I reinstalled it. Not the case...everything appears very secure.
Before I removed the woofer, I tried rotating the high frequency control on the crossover full clockwise and counter clockwise, thinking that maybe it was an intermittent thing or that the control was dirty. No luck there.
How do I troubleshoot this? Did my tweeter suddenly die or could the problem be in the crossover? (Yes, I swapped both systems from left to right, just to determine that it's not some sort of high frequency loss in the amp).
Another thing I can't figure out is the so-called acoustic resistance shell that's in place behind the woofer. All these years I was under the impression that it was a solid foam basket. I was amazed to find that it's nothing more than a pair of strips made from the same stuff used to insulate the inside of the cabinet, stapled to a cardboard ring. The manual says you can "lift the acoustic resistance shell out of the cabinet", yet mine appears to be glued in place.
Any ideas on what ails my tweeter? It worked OK before I removed the woofer. Thanks.
I took the woofer of the offending speaker out and checked all the wires inside, thinking that perhaps I had disturbed the wiring either when I removed the woofer or when I reinstalled it. Not the case...everything appears very secure.
Before I removed the woofer, I tried rotating the high frequency control on the crossover full clockwise and counter clockwise, thinking that maybe it was an intermittent thing or that the control was dirty. No luck there.
How do I troubleshoot this? Did my tweeter suddenly die or could the problem be in the crossover? (Yes, I swapped both systems from left to right, just to determine that it's not some sort of high frequency loss in the amp).
Another thing I can't figure out is the so-called acoustic resistance shell that's in place behind the woofer. All these years I was under the impression that it was a solid foam basket. I was amazed to find that it's nothing more than a pair of strips made from the same stuff used to insulate the inside of the cabinet, stapled to a cardboard ring. The manual says you can "lift the acoustic resistance shell out of the cabinet", yet mine appears to be glued in place.
Any ideas on what ails my tweeter? It worked OK before I removed the woofer. Thanks.