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beovox m100 fix or partout?

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radex7
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radex7 posted on Thu, Jan 29 2015 8:09 PM

Hello everyone,

I am counting on the fact that this being a dedicated b&o forum, you guys and gals will have some dedicated answers form me.

I recently acquired a pair of beovox m100 speakers, and beogram 3000 turntable. The speaker cabinets are in ok shape, definitely worth saving in my books... The problem is that they are not fully operational. One of the woofers is dead, both filler midrange drivers are missing (the ones just above the woofers), and one of the supertweeters (the top one) sounds off. When I plugged them in I was very intrigued and pleased by their sound, even in their incomplete state. I would really like to hear a fully operational pair, so I looked around for some info, as to finding replacement drivers, or fixing existing ones, but there is very little out there. 

Can you point me in a right direction here? Greatly appreciated! Thanks!

 

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Peter
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Peter replied on Thu, Jan 29 2015 9:23 PM

One of the woofers in mine stuck and I had it repaired. Well worth it. Better to get the drivers repaired than replace with new drivers unless you can get originals. This is the company I used.

Peter

Peter
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Peter replied on Thu, Jan 29 2015 9:24 PM

I also had the capacitors in the cross over replaced, though Tim Jarman did that.

Peter

radex7
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radex7 replied on Thu, Jan 29 2015 9:31 PM

Thanks Peter! I read your previous posts about the m100 stuck (slipped?) magnet. What does it mean? How do I identify if my magnet is at fault?

 

Thx

Peter
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Peter replied on Thu, Jan 29 2015 9:36 PM

If you press on the woofer ,normally you can move the diaphragm in and out. If the magnet slips, you cannot. However there are other reasons - I am no genius at fixing electronics, hence my use of professionals. Some of here can advise how to do things yourself.

Peter

radex7
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radex7 replied on Sat, Jan 31 2015 5:56 PM

Hmm, I will investigate further!

radex7
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Ok, I might have found someone stateside that will recone these. Another thing to check out I guess!

Does anyone have any info on the midrange  filler driver? The one that is enclosed inside the speaker.

Part numbers, maker, picture of the back, specs, anything? I found a few 4.5" drivers but have no idea what to aim for...

Thanks again!

 

 

 

 

 

 

radex7
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sonavor
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Stateside I can recommend this place - The Speaker Shop
I have only had to use them once but they repaired a twelve inch Yamaha woofer off an NS-690 speaker set.  That woofer had a slipped magnet and was frozen. The repair was very professional and that speaker is still working well for me. 

The Beovox M100 speakers are well worth repairing by the way.  I got my first pair towards the end of last year and they are quickly becoming one of my favorites.

-sonavor

radex7
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I think I would like them too, and I am all about fixing things rather than just chucking them, but that doesn't resolve my issue of missing midrange drivers. The information online is scant at best!

 

Someone out there must have taken them out at some point, and knows what they are! 

;-)

 

 

Peter
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Peter replied on Tue, Feb 3 2015 11:01 PM

I think it is a Peerless unit - part number is 8480125 but that is no help as they are not available now! I had to have mine refoamed and there was no suitable ring so the repairer had to cut and shut one he had. If I get a chance, I'll take one out and have a look at it!

Peter

radex7
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Peter, that would be fantastic! Thank you.

Next in line is the Phillips tweeter. Since it was already separating, I took  it apart to find  busted voice coil. This one is giving me hard time too! No continuity reading, Wire in a coil seems to have rubbed off coating, as I was able to get a reading between that location and one pin.

 

You can see a wire separating, that is because I was trying to eliminate the short. Very tedious ordeal!

radex7
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radex7 replied on Tue, Mar 17 2015 8:25 PM

I have committed to restoring those speakers!

 

I have the woofer sent out for inspection and repair. Acquired a pair of phase link midranges (too large since they are from m70 but hopefully will work), but I don't know what to do about the tweeters! One working, one with busted voice coil. 

I am on ebay every day searching for them, and nothing. But what about suitable replacement pairs? Does anyone have a suggestion, some tweeter characteristics to go by by searching for replacements?

Thank you!

 

 

Peter
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I think I have the tweeter - not sure if it works though - It is missing the red wire but was sent to me by a friend so I imagine it works. Happy to send it to you if you have one working one. I don't think the part number of the phase link is helpful though.

 


Peter

radex7
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radex7 replied on Sun, Mar 22 2015 7:28 PM

Peter! You are a life saver! That would be so incredibly fantastic!!! Did you try resistance reading between both solder points? Either way, I need it, I want it!!! I'll message you shortly so we can cover the details. This is so great!!

EDIT: I couldn't figure out how to send you a private message, could you please message me instead?

Thanks.

About phase links, yeah, the number itself not very useful. The resistance of the driver would be helpful though to find a closer match.

Once I gather all of the components again, I will still try the m70 phase links, and if they work well, I will just port my boxes to make them fit.

I am gonna wait with woodworking and cosmetics till I sort out the sound and electronics though. 

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