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Another CX re-foam Thread

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Orava
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Orava posted on Tue, Feb 14 2017 9:50 AM

It has been several years now when I last time foamed CX speakers. I do remember that new foams were kind of hard when compaired to old. Do anyone have any feeling whan they should be? I do have a pair of C40 witch have orginal rings (not tacky at all), and they are very flexible compaired to new ones. Has CX50/100 foams been as flexible when new? Or has my C40 foams just came flexible with age?

I had rings from Good Hifi and Audiofriends, both hard. I guess this has some effect to sound quality, at least I´m not satisfied to re-foamed CX100 of mine.

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Saint Beogrowler
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Saint Beogrowler replied on Tue, Feb 14 2017 11:21 AM
When I re-foamed my cx100s a couple months ago the new rings where soft, supple, and easily worked with.
Orava
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Orava replied on Tue, Feb 14 2017 12:29 PM

Where did you buy new ones?

 

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Saint Beogrowler
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Saint Beogrowler replied on Wed, Feb 15 2017 3:51 AM
I bought from a local speaker repair shop. They were generic sized foam and the shop did one of the cut a wedge out and glue together technique. Not aesthetically perfect but I've been abusing them daily and they have worked fantastically. I'd be nervous about hard foam.

There is a guy from Poland, I think, from Facebook who claims he has a source for perfect fitting foam for cx's that are pretty inexpensive. I can try to hunt him down if you'd be interested.
Orava
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Orava replied on Wed, Feb 15 2017 7:59 AM

Well, all hints are welcome.

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marc
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marc replied on Wed, Feb 15 2017 8:55 AM

for mine i'm considering to buy these:

http://www.audio-parts.de/Speaker-surrounds-repair/Bang---Olufsen-speaker-surrounds-repair-kit/Bang---Olufsen-Beovox-CX-100-Speaker-surrounds-repair.html

Orava
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Orava replied on Wed, Mar 1 2017 12:38 PM

So, no one has actual feel from originals anymore? Newest I had were some 15 years old, if I can remember feel was like fine t-shirt fabric versus new foams rough denim.

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Beocd
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Answered (Not Verified) Beocd replied on Sun, Oct 1 2017 8:54 PM
Suggested by Beocd

Hello,

I recently refoamed my CX-50's with foam from audiofriends (http://www.repairyourspeakers.com/) and I am happy with them. They do no seem hard at all. My repair project can be found here:

http://www.repairyourspeakers.com/manuals/Customers/Bang+Olufsen-CX50-CX100/CX50_woofer_restore.pdf

Best regards

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