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  3. 192058-167033

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
crustycoot
644 posts
 

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

petaluman
156 posts
 

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?

kraftwerkturbo OP
329 posts
 

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?

kraftwerkturbo OP
329 posts
 

Helpful and knowledeable folks at the diyAudio forum came through: 

 

Falcon Acoustics Nightingale NM-1

 

 

kraftwerkturbo OP
329 posts
 

Repaired Peerless midrange is back and speakers now running. 

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

 

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