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S 45-2 bass driver issue

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Answered (Verified) This post has 2 verified answers | 56 Replies | 3 Followers

Orava
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Orava posted on Wed, May 16 2012 4:36 PM

I found out that I have a pair of S45-2 with stucked bass drivers. Obiously loose magnets, and no more spares aviable. Donator speakers are not an option to me, it still leaves me with pair of speakers wiht broken basses, and that bugs me for sure.

So,  I have to do something about it.

 blah-blah and photographs as needed

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Orava
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Answered (Verified) Orava replied on Mon, May 21 2012 6:35 PM
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And here they are, with their new friend, Beocenter 3300. Reglued, recapped and cleaned.

And sounding Good, as you can hear. I guess I have to put my small Linn speakers aside now. Alltough they are about same side, they clearly lack bass, but their high register is exelent. Anyway this time B&O wins.

This reglueing isn´t so hard afterall, pretty straighfoward mechanical job. Maybe messy with all that glue, time and space consuming, but at the end I think it´s rewarding. And compaired to hunting (good) donator speakers, or equalent new drivers, this may be even easier to do.

 blah-blah and photographs as needed

Ricardo
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Verified by twowheel2001

Slight delay due to issues with the Crossovers on both speakers. Somebody got stupid and put a bit too much load on these guys I think

 

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freddy63
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I'm impressed, i wish i had read a thread like this a few years ago. I might have saved my S45 woofer !

I am curious about the types of glue used.

The white glue looks like wood glue, can anyone explaine what types of glue are used on the dust-cap ? and spider/chassis ? and rubber suspention/chassis ?

Frédéric

 

Orava
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Orava replied on Fri, Feb 15 2013 7:28 AM

freddy63:

I am curious about the types of glue used.

The white glue looks like wood glue, can anyone explaine what types of glue are used on the dust-cap ? and spider/chassis ? and rubber suspention/chassis ?

Frédéric

 

Hi

I used Hempels Epoxy (danishSmile) on magnets, it is slow hardening and never let me down, I also use it on my boat so has to be good. And yes the white glue is ordinary good quality PVA-glue, someones might shake threir heads, but I didn't found reason why not, in these places it doenst, in fact it cant be flexible like when glueing surroundings. On these rubber surroundings I used Danalim(again danish) contact-glue, not like contact, but immedially wet-glueing.

 blah-blah and photographs as needed

freddy63
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Thank you for making that clear.

I looked up Danalim glue, the yellow, universal adhesive 300, seems to be what you used.

Frédéric

Orava
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Orava replied on Mon, Feb 18 2013 9:07 AM

Those I mentoned were those I did use, not saying that there is no better ones.Hmm Anyway, they did work allright and I will use them in future if I do these again

 

 blah-blah and photographs as needed

chartz
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chartz replied on Mon, Feb 18 2013 12:37 PM

I used plain compound epoxy glue about 30 years ago to repair Kef B200 bass drivers, with a HUGE ferrite, almost the size of the speakers themselves and they are still working.

Jacques

Ricardo
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Following Orava's wonderful instructions

 

 

All ready to be cooked up in the Microwave for a few hours and Voila my drivers should be ready to rock n roll.

 

Søren Mexico
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Ricardo:
Following Orava's wonderful instructions

Nice job, but the micro will turn woofers into tweeters, cant wait to try this myself.Smile

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

Ricardo
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Søren Mexico:

Ricardo:
Following Orava's wonderful instructions

Nice job, but the micro will turn woofers into tweeters, cant wait to try this myself.Smile

Please note the use of shims, Two different sets were needed - one set for centering up the magnet then a second set for centering the voice coil. What I used was card stock in varying thicknesses,

Kind of had to  sort that one out on my own and required a handful of test fits before I was satisfied,

Just waiting for the glues to completely dry for a day or so before put them thru a sound check.

Rich
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Rich replied on Tue, Jul 16 2013 5:28 PM

The 8" woofer is probably harder to handle with the larger magnet, but with the P45 woofers (5"?), you could still move the magnet a bit while the epoxy is still "wet."

A "dry" test fit, though, is absolutely essential.

Good luck with the sound check.


Ricardo
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Verified by twowheel2001

Slight delay due to issues with the Crossovers on both speakers. Somebody got stupid and put a bit too much load on these guys I think

 

Ricardo
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Ricardo replied on Tue, Jul 23 2013 11:34 PM

It worked both bass drivers have been tested and are in good working order. Sadly the damage to the one crossover was sufficient enough to short out one tweeter.

Luckily plenty old stock out there on the web.

Garyy
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Garyy replied on Fri, Oct 28 2016 12:08 AM

Hello,

i have some P45 and the magnets have slipped off the two woofers. The magnet and back cover and the centre metal bar are still in place.

is it possible to reattached the magnet without removing the speaker and removing and dis atelier the whole cone? 

The rubber surround all look in great condition. 

Thanks for your help

Gary

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