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In Reply to: RE: 3.6R Repair posted by ColinB on January 05, 2021 at 16:58:39
Thanks for the information, will defiantly check regarding the serial numbers. Hopefully not a difficult fix. I doubt if the amp is an issue,ive been using the same amp for the better part of a year with no problems. I put my 1.7i's back into service and everything sounds great so it's definitely the speaker. Either way I'll know when I get to open them up.
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You're welcome. It's unlikely but is worth checking the manufacturing date just in case it's a later model. How powerful is your amp?
Hopefully you only need a small delam repair and will not need to do a whole rewire. Do check all the drivers are working ok. My Dads MGIIIs once lost continuity in one midrange section and it took a while for him to notice.
This is the Evo stik contact adhesive. https://www.amazon.com/Evo-Stik-Purpose-Impact-Adhesive-Super/dp/B002NPTNIK/ref=mp_s_a_1_4?dchild=1&keywords=evo+stick+contact+adhesive&qid=1609954180&sprefix=evo+stik+contact&sr=8-4
You can shop around for a better price. It's called a "Impact" and is in a red tube. I recommend getting the tube rather than a large pot as (after cleaning Mylar with acetone) you can squeeze the tube directly onto the Mylar diaphragm in small slithers. Works great and you can then apply 30NF later with a foam brush.
https://www.amazon.com/Bates-Brushes-Painting-Staining-Sponges/dp/B086JDDS32/ref=mp_s_a_1_1_sspa?dchild=1&keywords=foam+brush&qid=1609954848&sr=8-1-spons&psc=1&smid=A2QHPZ3L88WS89&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFZVFpNQzZBTzNZWTUmZW5jcnlwdGVkSWQ9QTAyMTg0MTNBT0tYMldNSkhZSTEmZW5jcnlwdGVkQWRJZD1BMDUxMzgzMlJMTDYxQkhZSkdVNCZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl
Shelia said they use foam brushes at the factory. The foam soaks up excess 30NF and avoids adding unnecessary weight to the driver. Should be able to buy 30NF online too.
Good luck and let us know how you get on!
I just heard back from Gary@ Magnepan and he said they were manufactured in July 2005. So I'll know soon enough once I get The Patient on the table.
Ah yes they use Miloxane. Close on the changeover date there!
Definitely likely to have some delam. The bass wires might have lifted a bit at the end of the panels too. Hopefully not too bad though!
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