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Beovox S-45-2 restoration

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This post has 18 Replies | 2 Followers

Juanitito
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Juanitito Posted: Wed, May 1 2013 10:31 PM

Hi, my name is Jean, and I would like to begin by thanking all of you for this incredible sum of B&O knowledge !

I am about to begin the restoration of my father's Beovox S45-2 and it's going to be a major one. Though they have been loved, 35 years of travel and loud playing have taken their toll.
The cabinets are in terrible condition (deep scratches all over, edges destroyed), holes in the covers and one of the peerless woofer is dead (magnet I presume). 

 I would like to get them back to the best possible condition given the terrible state they're in... So I have found another pair which I intend to use as an organ donnor.

To prepare, I have been reading all the threads I've found about those speakers and I have just a few questions left :

-For those who have already done that : is there anything you wish you had known before or any advice you can think of ?

-Where can I buy capacitors and resistors kit and have you really heard a big difference after recaping yours ?

Anyway, I'll keep you posted as i go along ! Thanks again.

 

Jean

 

Søren Hammer
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Welcome to Beoworld!

I did a recap of my Beovox S-75's and did notice that the treble was much clearer and they were easier for the amplifier to drive. A/B-tested the stock speaker vs. the recapped one and was genuinely surprised about the result. I used one of Martin's kits, he is known as "Dillen" here, send him a PM to him ("Start conversation with Dillen" in his profile.)

I have also worked with a pair of S-45's for my cousin - glued the magnet in place as the first thing. They are very good sounding speakers and go well with most amplifiers.

Vinyl records, cassettes, open reel, valve amplifiers and film photography.

Rich
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Rich replied on Wed, May 1 2013 11:03 PM
Where are you located? (Forgive me if your avatar states your location, but I can't see it as I'm on an iPod at the moment.)

My S45-2 refurb turned into a mod. I replaced capacitors using member Dillen's kit, replaced damping material, replaced terminal cup, and replaced fret (grill) cloth.

Replacing capacitors was essential for me. I had faulty midrange output in one channel.

Good luck with your project.


Juanitito
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Juanitito replied on Wed, May 1 2013 11:18 PM

Hi Rich,

I am in France. Usually I'm in Paris but the speakers are far east in the mountains !

Rich
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Rich replied on Thu, May 2 2013 12:12 AM
Then Dillen/Martin would likely be a great choice for capacitor choice, as Soren stated.


Juanitito
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Thanks for the answers guys !

PM sent to Dillen.

Orava
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Orava replied on Thu, May 2 2013 12:16 PM

And as you probably already find out, magnets are repaireable ;)

 

 blah-blah and photographs as needed

Juanitito
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Juanitito replied on Wed, May 28 2014 9:41 PM

Hello guys,

just a little update to tell you I've finally recaped my pair with Martin's kit and I'm very very happy with the results. They sound absolutely great and I think I will repair my second pair. Seriously, everybody should recap these speakers, they deserve it !

On the second pair one has a faulty woofer (trembling sound on bass) and I can't find any problem on the cone or suspension. It is a mystery, nothing shows but it sounds terrible on some low basses frequencies...

BO
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BO replied on Thu, May 29 2014 12:27 AM

Re-glue the whole back of the cabinet!

//Bo.
A long list...

Juanitito
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Juanitito replied on Thu, May 29 2014 6:55 AM

Hello,

I'm quite sure it comes from the woofer because it's still here when it is detached from the cabinet and stops if I touch the cone while it plays.

Jean

chartz
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chartz replied on Thu, May 29 2014 9:38 AM

Salut !

I think I've seen you somewhere else Jean... 

I would agree about the S-45. An excellent small speaker indeed!

Jacques

Dave Farr
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Dave Farr replied on Thu, May 29 2014 10:22 AM

Jean,

try turning the woofer 180°.  Does it still make the noise you described?

Dave.

Dillen
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Dillen replied on Thu, May 29 2014 11:23 AM

Dustcap lose from the cone ?
Cone lose from the metal basket ?
Spider lose ?

Martin

Juanitito
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Juanitito replied on Thu, May 29 2014 12:01 PM

I'll try turning the speaker upside down when I get back to it !

As far as the spider, dustcap, and cone are concerned I don't see anything wrong, I'll check again to be certain. Funny thing is I have to woofers with the same symptoms from two different set of speakers and used with different amps/systems.

Thanks

Jean

Juanitito
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Juanitito replied on Thu, May 29 2014 12:04 PM

Yep, french vintage audio forum !

chartz:

Salut !

I think I've seen you somewhere else Jean... 

I would agree about the S-45. An excellent small speaker indeed!

 

Juanitito
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Juanitito replied on Fri, Jul 25 2014 10:17 PM

Guys, I give up...

I've tried turning them 180°, same problem. I've closely looked at the dustcap, cone and spider and everything seems ok. I have remove the dustcap to look under and once again everything is fine. Still I've got these scratches on some low frequencies...

Orava
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Orava replied on Sat, Jul 26 2014 12:24 PM

did you try speaker poiting straight up?

 blah-blah and photographs as needed

Søren Mexico
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Juanitito:

Guys, I give up...

I've tried turning them 180°, same problem. I've closely looked at the dustcap, cone and spider and everything seems ok. I have remove the dustcap to look under and once again everything is fine. Still I've got these scratches on some low frequencies...

 

Check the gap in the voice coil to the magnet (shim it) must be parallel top and bottom and same all around.

Collecting Vintage B&O is not a hobby, its a lifestyle.

TunG122
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TunG122 replied on Sun, May 3 2020 7:09 AM

Vui lòng kiểm tra cẩn thận nhện loa, rất có thể nhện loa đã bị lột xương loa

 

Which roughly translated by Dillen (Beoworld moderator) comes out as:
"Please check carefully the speaker spider, it is likely that the speaker spider has been stripped"

Please write in english if possible.

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