Identify, repair or replace mid range speaker in B139 based setup


I got my hands on (could not resist bringing home the famous oval driver) these speakers. Doesn't look like DIY but might be a kit.

a) If someone can identify what those, let me know. 

b) The midrange driver is all chewed up (foam gone, still runs, but broke voice coil wire when trying to remove from enclosure). Can somenoe ID the driver? Anyone out there that can refoam (and put longer voice coil wires back on)? 

c) If I cannot repair the existing midrange drivers, I need to find replacements that fit into the bracket (preferrably with their own sealed enclosure like the originals). Or else (but then would stack vertically with tweeter. 

 

https://drive.google.com/file/d/1_gIE6jrGBdwHaIU4hppW5rc9xBzIcy2P/view?usp=sharing

https://drive.google.com/file/d/1qN4pm70N9CeZBz6cDMcM-E3bAOUbnXda/view?usp=sharing

Midrange driver photos:

https://drive.google.com/drive/folders/1Kha0AvJc9w9khmVUJLmnYO4fS7-JPwB4?usp=sharing

 

 

kraftwerkturbo

Peerless KO40-MRF.  Often used in configurations where a low crossover from the B139 was not necessary.  In those situations, a KEF B200 was the popular choice.

FWIW, the B139 is, technically, not an oval which has no flat sides.  The shape is more like a racetrack.

kr4, thank you very much. No need to find 8 ohm version (ebay has a 4 ohm refoamed listed). 

Any suggestion for good replacement if I don't find exact match?

 

yogiboy, I need to replace the busted (foam, and broke voice coil leads) midrange Peerless KO40-MRF 8 Ohm. Not the Kef woofer (seems to work fine). 

I would contact Bill LeGall from Miller Sound to see if he can fix it. He’s a genius and probably the best speaker repair person in the US, (maybe the world). Just google him.

He has done several repairs for me after being told from others that the drivers weren’t repairable.

Super highly recommended!

http://www.millersound.net/

https://forum.audiogon.com/discussions/bill-legall-millersound-speaker-driver-repair

If repair is not possible, check with Madisound for near equivalent replacement. You may need to re-create the closed back chamber somewhow. 

from Wikipedia: "A stadium is a two-dimensional geometric shape constructed of a rectangle with semicircles at a pair of opposite sides. The same shape is known also as a pill shape, discorectangle, obround, or sausage body".

Dare we call a KEF B139 discorectangle-shaped?

My recone/refoam friend is attempting rebuild. Will likely end up with foam reversed (sticking out like most drivers, nut inverse like original), but try original orientation first. Supplier of the foam indicates in description what it can be done. Either way would work for me!

Still trying to determine who built the speaker! Any guesses?

Any places to post pics to find out?

Helpful and knowledeable folks at the diyAudio forum came through: 

 

Falcon Acoustics Nightingale NM-1

 

 

Repaired Peerless midrange is back and speakers now running. 

Still trying to find more details (cross over, cabinet design, etc).