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Beovox S45 Magnet Success: Screwdriver + CD Case + Glue + Xmas Card!

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machineage
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machineage Posted: Fri, Feb 8 2013 1:10 PM

OK - So I bought a pair of Beovox S45 6302 from eBay (£7.00!) - only to read of the dreaded magnet issues after they had been collected by the couriers. Yikes....

They arrived today - and sure enough one had a seized woofer Crying

Well I have no specialist equipment - and from what I read the woofers are really only good for binning when this happens. So I thought myself - I've nothing to lose!!!

The magnet had slipped sideways a centimetre or so dislodging the inner cylindrical core.

So I sat and thought for a while....

Then Idea

I now have a working Peerless Woofer!

So here's what I ended up doing. I removed the magnet & core and cleaned them up (the core had minor corrosion on the surfaces). I glued the core back into the magnet feeling for the 'soft spot' where it originally sat. I then held a CD case between one edge of the chassis & magnet to stop it snapping onto the chassis. This allowed me to carefully lower the other edge down and manoeuvre the core until it slipped into the voice coil. I let that side gently down - then carefully removed the CD case so the magnet was down onto the chassis (it's quite a strong magnet!).

OK - next step - I removed the dust cap. Doing this allows you to see which part of the core is binding with the coil. I judged what I thought would be the thickness of four shims to space between the core & coil - and tore up a Xmas card which looked about right into 1cm strips. I popped two into the larger space opposite the side which was binding. Then with a small flat bladed screwdriver - I wedged this up against the chassis - and used the shaft to lever the magnet around. Once you have the core unsnapped from one edge - it's a case of very very small but firm and controlled levering movements - then checking the shims for movement. It took me around 10 minutes - with the magnet occasionally snapping over to another side if you're not careful enough. Anyway - I eventually got it to the point where the four shims were about equal in resistance - so I removed them. Hey presto!! 

There was no rubbing on pushing the cone from various sides - and the coil space looked to be equidistant. I quickly applied some super glue to where the magnet meets the chassis to hold it. I then powered the speaker up and drove it with some low bass - it's perfect Lets have a Party !!!

OK - so now I need to glue all around with some epoxy - and replace the dust cone (I kinda destroyed the original). I know the magnet isn't glued surface to surface with the chassis - but to be honest the magnetic attraction is very strong - and I can't see it will cause a problem if the circumference is glued all around with epoxy.

So - very amateurish - but - it can be done with focussed determination! I can post some pics if anyone is interested. 

BTW - anyone know where i get some 3" dust caps in the UK? 

 

richardbell81
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Hi there,

I think I may have a similar problem and would be interested in seeing your pics! I've just bought 2 Beovox S25 from eBay and sure enough 1 of them is broken. I thought it was the wires shorting out on the basket so I fixed them back using some epoxy and although it might be a tiny bit louder than it was, there is no base whatsoever. The woofer seems to have 'seized' up compared to the other one and there is some corrosion around the core similar to how yours sounded!

Here's a pic... http://s821.beta.photobucket.com/user/richardbell81/media/speaker-core.jpg.html

Any advice you can give would be really helpful!

richardbell81
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Hi there,

I think I may have a similar problem and would be interested in seeing your pics! I've just bought 2 Beovox S25 from eBay and sure enough 1 of them is broken. I thought it was the wires shorting out on the basket so I fixed them back using some epoxy and although it might be a tiny bit louder than it was, there is no base whatsoever. The woofer seems to have 'seized' up compared to the other one and there is some corrosion around the core similar to how yours sounded!

Here's a pic... http://s821.beta.photobucket.com/user/richardbell81/media/speaker-core.jpg.html

Any advice you can give would be really helpful!

machineage
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machineage replied on Fri, Feb 15 2013 10:29 PM

Hi Richard

You can't see the core - or pole of the magnet unless you remove the dust cap.

Has the magnet visibly shifted out of centre?

I was going to put up some pics - however I've somehow managed to erase them from my phone Angry

If anyone has any seized Peerless woofers - don't throw them as I'd be interested in them Smile

bobaustin
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bobaustin replied on Sat, Feb 20 2021 7:46 PM

Hi Guys,

 

I just got a pair of S45-2 woofers. I didn't test them when buyting then, I came hoem and all that I heard was high and mids. So I found you guys discussing what seems to be a known problem with the S45-2's.

What I don't understand is:

When is the stuck woofer recoverable? I've read things about shifted magnets and magnets that have loose.. but mine seem tight, and there is no visible damage.. My question is, can I follow the turtorials here and simply make them work again? 

 

I would really appriciate your help!

Best,

Bob

Craig
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Craig replied on Sun, Feb 21 2021 6:30 AM

Yes

A woofer with a slipped magnet is recoverable.....I have tried a couple of techniques, this works best for me.

Freds Beovox S45's - (beoworld.org)

Craig

Dillen
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Dillen replied on Sun, Feb 21 2021 7:51 AM

The magnet only shifts 0,5 - 1 mm.
Not enough to be immediately spotted.

Do what Craig did.

Martin

bobaustin
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bobaustin replied on Mon, Feb 22 2021 11:23 AM

Thanks Craig and Martin. 

 

I ordered what I need to do the procedure... The documentation is really helpful. Many thanks for doing that. If needed, let me know if I should document it as well! Would be happy to add on.

 

 

Craig
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Craig replied on Mon, Feb 22 2021 4:36 PM

Please do.....we like to follow members projects, post pics too ;¬)

Craig

Craig
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Craig replied on Tue, Feb 23 2021 6:13 AM

This is a better thread......

Lee's S45 speaker - (beoworld.org)

bobaustin
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bobaustin replied on Thu, Feb 25 2021 3:35 PM

 

Hi Craig and Martin,

 

I posted my repair (still in progress though) here.

 

Question: What kind of glue should I use to reglue the dustcap?

 

Best,

Bob

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