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Beovox M70 midrange fix or replace?

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Beo_Jean
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Beo_Jean posted on Sat, Mar 24 2018 11:36 AM

I'm having an issue with one midrange where the sound is scratchy and distorted at low volume.  After diagnose by pushing the dome slightly inwards  I found that the voice coil is rubbing slightly.

Is this repairable or I need to replace it?  Anyone attempted to open one before?

The midrange is an ITT LPKM 130/50.120T 4 Ohm found in the M70, M75 and M100

I know, it's a rare animal these days... 

TIA to everyone!

Charles

 

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Rich
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Rich replied on Mon, Mar 26 2018 9:36 PM

I had a spare pair of M70s with damaged cabinets that I parted out.  The phase links and tweeters were donated to Soren Mexico.  The woofers and midranges still need to find good homes. 


Saint Beogrowler
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Rich:

I had a spare pair of M70s with damaged cabinets that I parted out. The phase links and tweeters were donated to Soren Mexico. The woofers and midranges still need to find good homes.

Blah blah blah, blah blah ba ran

I spent spent so long waiting to find a woofer on eBay! Any chance you have an extra rear plastic piece that mounts to the stand? One of mine is broken and rotated funny to sort of work. These are my (and my wife’s) favorite B&O speaker.
Dillen
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Dillen replied on Tue, Mar 27 2018 1:00 PM

Rich,
Could I kindly ask you to upgrade your membership level to minimum silver?
That's what we ask of our members to allow buying and selling.
Your support will be appreciated. 

Martin 

Beo_Jean
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Dillen:

Rich,
Could I kindly ask you to upgrade your membership level to minimum silver?
That's what we ask of our members to allow buying and selling.
Your support will be appreciated. 

Martin 

Hi Martin,

How do we upgrade our membership?  I logged into my user portal and also look under my profile but I don't see anywhere how to upgrade?

Can you assist me please?

Thanks!

 

 

Dillen
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Dillen replied on Tue, Mar 27 2018 2:52 PM

Sure,
On the main website, just below the blue Logout button:
https://www.beoworld.org/register.asp?action=regrade_view

Martin 

Beo_Jean
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Oh boy,

Thanks Martin!

Rich
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Rich replied on Tue, Mar 27 2018 8:29 PM

Sorry, Martin.  But to be clear, the intent of the offer of the midranges was to give them away at no cost.


Dillen
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Dillen replied on Tue, Mar 27 2018 8:43 PM

That wasn't clear. At least to me it wasn't.
But that's of course perfectly fine - and very generous of you.

Martin

Beo_Jean
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Dillen:

Rich,
Could I kindly ask you to upgrade your membership level to minimum silver?
That's what we ask of our members to allow buying and selling.
Your support will be appreciated. 

Martin 

But Martin,

Rich is not selling anything, he donates his stuff!  Wink  Just kidding Smile

 

Søren Mexico
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Beo_Jean:
Rich is not selling anything, he donates his stuff!  Wink  Just kidding Smile

No kidding, he donated drivers for my M70s and then just for the fun of it he put a BG CD50 and a BG 3000 in the shipping box. its yours for free he wrote, the BG 3000 I repaired and send back to him, just for the fun of it.

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

Beo_Jean
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Søren Mexico:

Beo_Jean:
Rich is not selling anything, he donates his stuff!  Wink  Just kidding Smile

No kidding, he donated drivers for my M70s and then just for the fun of it he put a BG CD50 and a BG 3000 in the shipping box. its yours for free he wrote, the BG 3000 I repaired and send back to him, just for the fun of it.

What?  You mean the real BG 3000 manufactured by Thorens?  Oh man, that's a heck of a rare machine!  And going for 2K on eBay!

The joy of forums hey! Smile My hat off to you Rich!

 

Beo_Jean
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Anyone knows who manufactured the filler driver put into the M70?

Not much is said about this one.  I've seen resembling units put into the RL manufactured by Nokia (formerly ITT) but not much else.  Any equivalent available?  I'm building spares just in case...

Søren Mexico
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If it was a Thorens i would have kept it, no it was this one

 


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

Rich
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Rich replied on Tue, Mar 27 2018 10:54 PM

Well, just for the fun of it, I'm back to being a Gold Member again.


Rich
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Rich replied on Tue, Mar 27 2018 10:56 PM

Søren Mexico:

If it was a Thorens i would have kept it, no it was this one

Yes, that's the one.  I recognize the little scratch on the front of the wood trim.


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