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In Reply to: RE: 3.6R Repair posted by skypop on January 12, 2021 at 08:14:40
Those ends parts of the panel look they have gone green. Someone else might be able to double confirm but I think that's the colour miloxane starts to go when it goes bad, and it starts at the ends. I can see what you mean as it might not be worth doing anything as the wires seem bonded ok, but I might be half tempted to redo all four ends on each speaker as it might progress. Would require using acetone and cotton wool pads but you'd also need to glue back down then use 30NF. I guess as you have removed the staples already and if you don't put so many back when you reassemble, you could do this repair at a later date if the bass panels start to buzz down the line.
Or another possibility is that that green and red bits are some kind of extra adhesive that Magnepan added as they knew the ends often give problems, - not sure on that one. Maybe someone else might know.
Follow Ups:
I read that about the ends also, it's only about an inch from the ends and only on the bass coils. I'm going to wait until I hear some buzzing before I do that though as I don't have a heated garage and its to cold to strip and apply that right now, as it is when the boss came home the first thing she said was What's That Smell! I did it in the basement and only stripped a few spots and reglued. Now that I've done this I realize it's not too hard to do. Everything is fixed for now, and tomorrow I'll put it back together with LESS STAPLES so next time will be easier.
Yes the glue stinks, and the staples are a pain! As you can see its really not too difficult to disassemble and also fix once you know what you are dealing with. The end of the bass wires might start curling up one day, but hopefully not for a good while. Like I said they can also curl without buzzing too but it's certainly not optimal! Try to keep the speakers out of sunlight if you can as IIRC that makes delam more likely.
Glad to hear you reglued ok. It's bound to fix the issue.
As for the XO if the speaker had more staples than you can imagine than its pretty unlikely its even been touched since it was built at the factory :-)
No problem with the sunlight, my Mancave/music room is in the basement so theres no chance of any sunlight hitting these speakers. I'll report back after everything is back together and I had a chance to do some listening to the music that I heard the Buzzing on.
Good luck! Fingers crossed it's better now.
In the words of the Infamous Dr Frankenstein...It Is Alive!!! Sounds great, no more Midrange Buzzing! Thanks for all of the advice and support. Otherwise for anyone on the fence regarding fixing the coils of their Maggies,Just do it, not hard at all just take your time and lots of pictures or notes so that you can reference them. Once again thanks everyone for the help.
congrats!inspirational work.
Thank you,the hardest part of doing this is taking the speaker apart and putting it back together.
Glad to hear it's all sorted now! That's really great. Yeah, it's not too difficult to repair if you are careful and take photos. When I first did it I thought I'd mess something up but it went just fine too.
I broke a ribbon tweeter once but that was just due to a speaker falling over. I found putting a new ribbon into the tweeter cage a nightmare! Much more difficult than a delam repair. Here in Europe we have no option to do the tweeter cage part exchange deal Magnepan offer in the US!
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