OK first of two replacement crossovers arrived in the mail today. I put it in and it sounds pretty good! woofer works, tweeters work. I hear a tiny bit of distortion here and there, but I think it might just be the nature of the speakers. They are a 40 year old design, after all. I think it might have something to do with the bump in the woofer response and the sort of wonky crossover design as described here.
Because the new crossover was from a new model (serial number 177750 -A), I had to drill 4 holes in the front panel of my speaker which is an earlier build, serial number 87709. I didn't mind at all, though, because it will make things easier to replace if something goes wrong with the crossover again.
I'm happy to report that I was able to buy two replacement crossovers and install them and the speakers are working swell now. My speakers, which are the older L-26 models, had their crossovers *glued* and *stapled* to the inside of the front face of the cabinet. Ripping out the crossovers was hard until I figured that the key is to scrape a bit with a razor edger or spackle spatula until you meet a staple and then pull out the staple. Pliers work for staple-pulling, but you have to be careful not to smash the cardboard port tube.
I also had to drill mounting holes for the replacement crossovers -- this is pretty exacting work and one must be pretty careful.
Thanks for the suggestions guys.
And markw, this one is for you:
Gee for such a knowledgable tech you sure are a drama queen and a crybaby to boot. All you needed was to spritz the pots or, at most, new pots.
Originally Posted by sneakyimp
Last edited by markw; 03-29-2012 at 04:12 AM.
Unfortunately, the pots were more or less stuck in place (corroded, etc. -- moisture?). One of them had broken loose and would turn around completely when you tried to turn the adjustment. So minimally new pots.
Originally Posted by markw
I don't know if you were paying attention, but the crossovers were *glued* inside. Not only am I not in possession of mirrors/cameras/arthroscopic surgery equipment, but the nut holding the old pots in place was on the other side of the glued-on board. To unscrew the nut would require that I remove the crossover anyway. Removing the crossovers was impossible without tearing them to pieces.
For such a self-professed elitist you sure do provide a lot of factually inaccurate detail and grief to well-intentioned posters. I think you are the troll.
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