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Posted

Hi

 

I recently purchased a pair of Kef Concertos. One of the bass drivers is open circuit. Does anyone have a replacement or know where I can get it repaired or replaced>

 

Thank you

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Posted
59 minutes ago, jonesie said:

Hi

 

I recently purchased a pair of Kef Concertos. One of the bass drivers is open circuit. Does anyone have a replacement or know where I can get it repaired or replaced>

 

Thank you

Try ebay. You may need to buy another pair with a failed bass driver to endup with one good pair. 

Posted

Repairing a B139 is possible providing the area of the expanded polystyrene cone adjoining the voice coil has not collapsed with age. You can check for this condition by removing the magnet which will also allow  you to inspect the voice coil to establish what has happened to it.  The flexible braided wires that provide the connection to the voice coil can also go open circuit. Used B 139,s turn up from time to time and there is the option of buying new replicas from Falcon Acoustics Co. in the U.K. 

Posted

Yes, Falcon Acoustics in the UK would also be my recommendation for purchasing a new pair to replace the existing B139s in both speakers. Also, you can try reaching out to the Speaker Hospital in Condell Park NSW for repairing the existing B139.

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Posted
34 minutes ago, VanArn said:

The flexible braided wires that provide the connection to the voice coil

It is quite common for the flexible braided wire to detach from the speaker terminal after 50 years of service. It would take a competent tech 2 mins to fix.

 

26 minutes ago, xlr8or said:

Yes, Falcon Acoustics in the UK would also be my recommendation for purchasing a new pair to replace the existing B139s

I disagree. They would cost more that the the Concertos are worth and would be well below the quality of the original drivers. In fact I would give any of the Falcon Acoustics stuff a wide berth. I would if the original driver is assessed as being US pick another secondhand unit, however, they were so well made it would have to have been a significant event or mistreatment to render it unrepairable. 

Posted
On 7/1/2024 at 11:55 AM, jonesie said:

Hi

 

I recently purchased a pair of Kef Concertos. One of the bass drivers is open circuit. Does anyone have a replacement or know where I can get it repaired or replaced>

 

Thank you

Contact Audio Connection, their associated company is the importer. 

Posted

I know that this is off-topic and not really helpful, but some years ago Wilson Audio tried to buy up all the available B139s in the world (If I recall correctly).   They managed to get hold of a huge cache of the things.

 

Good luck with your repair.

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Posted (edited)

Greedy bastards. I have found one that is supposed to be working. Total recoil have also said they can more than likely repair the one I have. So I’m starting to horde B139s as well! Thanks for your tip.

Edited by jonesie
Posted
On 06/01/2024 at 10:54 PM, Peter_F said:

and would be well below the quality of the original drivers. In fact I would give any of the Falcon Acoustics stuff a wide berth.

What are you basing that opinion on?

Posted

give Gary Cawsey a call he is a very competent tech
he is in Brunswick vic3056
0433884924

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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