Fat Sounds
New Member
I recently picked up a killer package deal consisting of a pair of 4671ok's,a pair of JBL 6260 amps,and a 6215. When I went to audition them locally the seller had just the speakers set up in his garage,running off a mid level receiver. It was very slapped together. Anyhow,while listening I noticed one of the horns not playing properly,distorting,Sibilance,etc. We switched sources,playing sources,then swapped in each 6260,the problem persisted. I figured at worse,it'd need a diaphragm.
One thing that was curious,was that there was an extra set of binding posts on the back of each speaker,on the exposed portion of the crossover plate. I had noticed this in the ad. The seller seemed pretty clueless but had the posts paralleled,so both drivers were working in each cabinet. I assumed someone had just wired up a slick bi-amp set up......
The price was good enough,and for some personal reasons,I didn't even try to beat him up on the price,I knew I'd be ok regardless. Loaded everything up,got them unloaded at home and went to town. Pulled the 2225h in the ailing speaker to inspect the crossover. Indeed,they had been bi-wired for a active crossover network,internal crossover completely bypassed. I suspect,either the guy I bought them from,or the person whom he had,cooked the horn,not knowing they were unprotected. I went ahead and removed the horn and crossover network(65137 or 66073).
After a fair amount of time searching for good pictures to reference and correct the botched wiring,I was coming up fairly short. About a dozen pictures of the network,and a couple similar but nothing clear enough to make me feel comfortable digging in. I decided to pull the network out of the other one,which was a great idea. They'd tackled that one in a different manner,which together with the other crossover and pictures,gave me the confidence to continue. I just finished up the one from the problemed speaker,so I thought I'd post the results. I'm not the best solderer but everything is in it's proper location and I was able to open up all the wiring so there will be a good reference for people in the future. The other network is missing a cap,totally removed from the board,I don't believe it's loose in the cabinet but will give a better look before I buy a matching pair,just so the two will match. Also,I noticed the resistors on one network have powdered up a bit and left some residue on one of the jumper panels? I will swap new ones in on both as well. Wonder if this was the culprit of the almost fire I recently read about in a 4670.
Really looking forward to getting the pair going and fiddling with the amps. The 4670's have these massive ball socket and post style wall/ceiling mounting brackets which I will most likely remove and seal off. Thankfully those are on the bottoms. Been up for over 26 hrs. now,anything else I think of I'll address in the comments. Enjoy.
One thing that was curious,was that there was an extra set of binding posts on the back of each speaker,on the exposed portion of the crossover plate. I had noticed this in the ad. The seller seemed pretty clueless but had the posts paralleled,so both drivers were working in each cabinet. I assumed someone had just wired up a slick bi-amp set up......
The price was good enough,and for some personal reasons,I didn't even try to beat him up on the price,I knew I'd be ok regardless. Loaded everything up,got them unloaded at home and went to town. Pulled the 2225h in the ailing speaker to inspect the crossover. Indeed,they had been bi-wired for a active crossover network,internal crossover completely bypassed. I suspect,either the guy I bought them from,or the person whom he had,cooked the horn,not knowing they were unprotected. I went ahead and removed the horn and crossover network(65137 or 66073).
After a fair amount of time searching for good pictures to reference and correct the botched wiring,I was coming up fairly short. About a dozen pictures of the network,and a couple similar but nothing clear enough to make me feel comfortable digging in. I decided to pull the network out of the other one,which was a great idea. They'd tackled that one in a different manner,which together with the other crossover and pictures,gave me the confidence to continue. I just finished up the one from the problemed speaker,so I thought I'd post the results. I'm not the best solderer but everything is in it's proper location and I was able to open up all the wiring so there will be a good reference for people in the future. The other network is missing a cap,totally removed from the board,I don't believe it's loose in the cabinet but will give a better look before I buy a matching pair,just so the two will match. Also,I noticed the resistors on one network have powdered up a bit and left some residue on one of the jumper panels? I will swap new ones in on both as well. Wonder if this was the culprit of the almost fire I recently read about in a 4670.
Really looking forward to getting the pair going and fiddling with the amps. The 4670's have these massive ball socket and post style wall/ceiling mounting brackets which I will most likely remove and seal off. Thankfully those are on the bottoms. Been up for over 26 hrs. now,anything else I think of I'll address in the comments. Enjoy.
