Can anyone ID this speaker?

Ran across this image but, because pinterest, it's not linked to any useful info on this speaker. The driver looks coaxial Tannoy-ish to my eye, but my eye is a little less-trained than some. Cool looking enclosure and stand. Certainly looks DIY. Anyone recognize this?

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Looked to me like a larger Tannoy
But with the screen removed.

Using Google lens found a Japanese Web Blog.
And indeed in one entry mentions a 15" Tannoy
Even shows the Rear of Driver
With label
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In another blog entry mentions adding a Grill
and also mentions the size as 15"
Also mentions the dust cover being removed.


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Seems to be the Link to Main Blog Page/ Diary

Tannoy Speakers.jpg

The Driver before Dust Cap removed

Gotta say Japanese have a much different HiFi scene.
Rather cool and heavy influence from Early American Vintage Altec / Western Electric
With a Twist. Very interesting.
Seems American designer/company Ojas vintage style was heavily influenced by his time living there
 
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I must confess, I built it. Only needed one because the world back then was mono and it was also in black and white. I hooked it up to a superhetrodyne receiver so I could listen to the NYSO. Men wore ties and hats, women wore dresses and washed their hair once a week, but only if it needed it. Everyone smoked something called tobacco that didn't get you high but did keep you skinny. We built an addition on to our house about that time to add an inside toilet, whew!

(note: this is satire and is not meant to be taken seriously)
 
Only needed one because the world back then was mono
Got the satire, but hey, For old Jazz 78's all that is needed.
Often hunting down rather old Threads on the internet going back to the 90's
Many older gentleman that have likely passed by now often made comments that Stereo was a gimmick.
And the usual tube stuff, nothing beats real Triodes and ultra linear is garbage yada yada.
Only needed one tube channel ( cheaper on the wallet) , AM radio was fine LOL

This blog is interesting though, was actually stereo and many iterations of the project including vintage Horns.
And shows some turntables and McIntosh 240 amplifier

Seems a collection of 15" and 12" speakers
the OP photo shows adapter plate. Blog does mention a plate made to use other speakers
Below appears without plate for 15"

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Certainly was having fun
 
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Excellent detective work, guys, thanks.

And wow… that blog is a rabbit hole! Agreed, was/is having fun— I dig the aesthetic of the setup, would love to actually hear it, and also after checking out just one of the records he’s featured I can tell you I’ll likely spend hours checking out the rest.

Agreed, there is definitely a uniquely awesome vintage hifi scene in Japan, and I think it’s great that Devon Turnbull/Ojas has translated that into interest in Hifi (and DIY) in the US. I went to see his art installation/listening room in San Francisco and it was one the best systems I’ve ever heard.
 
Many older gentleman that have likely passed by now often made comments that Stereo was a gimmick.
One of those gentlemen is (or, at least last I checked, was) still kicking, and if you’re ever in LA you should check out his store, The Record Collector, on Melrose Ave.

Dude had a single JBL Hartsfield smack in the center of the store, hooked up to a Thorens 124 via an early McIntosh monoblock, which he used to play 16” broadcast transcriptions of concerts at the Hollywood Bowl, “…and I mean the REAL Hollywood Bowl,” he angrily explained to me, “Before they tore down the ORIGINAL wooden shell and destroyed the sound of the venue FOREVER!”

They truly don’t make curmudgeons like they used to.
 
"For old Jazz 78's all that is needed." True! I like blues played on a scratchy record. I will play mono recordings on CD (which are really mono left + mono right) in Dolby to focus the sound into the center channel. This sounds better to me. In my 'stereo' room I stack the speakers or disconnect the right channel before the DAC. Mono is best listened to as mono.