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JBL L112s w/ black woofers

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It looks like a 128H-1 cone to me. The 128H-1 is acoustically identical to the white 128H, but with a black cone. It should not cause any issues.

The JBL 4412A Studio Monitor, that used the black 128H-1, was still sold up until 15 years ago or so. That caused there to be continued supply of 128H-1 woofers and official 128H-1 recone kits. Many white 128H woofers were reconed with 128H-1 kits or simply replaced with 128H-1 woofers, because they were available.
 
I noticed upon in-person inspection that the surrounds were glued to the front of the driver — oof. Hack refoaming job. I'd already gathered from my AK research that it would likely take a full recone job on the woofers to set the job right. Was looking forward to picking them up, but passed.

Thanks again for the guidance
 
I’ve got a pair of L100’s with black woofers as well, not sure if they are original equipment or not. I don’t “think” that the L100’s ever came with a black woofer, but have never investigated it...it’d be interesting to know.
 
Sure looks glued to the cone back in the photo.

No, JBL never sold the L100 Century / L100A Century L100A Century with black cones.
 
I noticed upon in-person inspection that the surrounds were glued to the front of the driver — oof. Hack refoaming job.

Are you sure that they were glued to the front?

Here is an example of a 128H-1 with the foam glued correctly to the rear:
4412left.jpg

Here is an example of a 128H-1 with the foam on the front (bad):

4412badrefoam.jpg

Your pic for comparison:

C692F729-4073-43C2-9A4E-53A15CF7870E.jpeg

Looks a lot more like the first example than the second. Usually it's pretty obvious when the foam is glued to the front.
 
Yeah, I failed the acid test on this one. Honestly my brain ended up short wiring as the seller auditioned them for me in his garage. He first played a Celine Dion CD then something else that was really overproduced and shrill. I’m not a basshead, but I didn’t detect any of the slam or depth I was expecting, instead the highs just seemed super glassy and etched. Then came some Chicago and Sinatra, which are better, but it seemed as though the speakers were kinda shouting at me at whatever volume.

I had run around all day preparing to buy them, and after a long drive I should’ve just snagged them and listened to them at length on my own system. I didn’t even have the presence of mind to attenuate the tweeters or mids a bit, I got hung up on the woofers and the lack of perceived frequency balance, and grew antsy about whether the refoaming or reconing was done correctly. I listen to ADS L880s in my living room, where the L112s would have gone, and in my mind I was thinking, “These don’t sound nearly as smooth or natural... what gives?” (Different speakers, of course. I’ve also been hunting for L980s, and part of my brain was thinking, “Walk away and find those instead. You already know you like the sound signature.”)

I have my regrets. I started replaying the sequence over and over on Sunday trying to piece together how I lost the plot and watching this thread silently. But hey, live and learn. This was my second shot at a pair for a reasonable price (though I was unemployed the first time). Unlikely to fall in my lap at this rate, though they certainly seem to come up for sale online fairly routinely.
 
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You just never now . I had 2 pair drop in my lap out of nowhere. Mint minus the rotted woofer foams . Fortunately , I know a guy who refoams JBL's professionally . They are awesome .
 
I noticed upon in-person inspection that the surrounds were glued to the front of the driver — oof. Hack refoaming job. I'd already gathered from my AK research that it would likely take a full recone job on the woofers to set the job right. Was looking forward to picking them up, but passed.

Thanks again for the guidance

That's exactly how the used pair of L166s I bought were done. Foam surround glued to front of cone. The speakers needed to be reconed properly. I had Bao at Speaker Repair Pro recone them. But, he had to add the Aquaplas to the front (OEM has them on the back of the L166 122A woofers). It didn't matter, as the white coating does not show through the "egg carton" grilles.

BTW... real Aquaplas is getting hard to find. Bao hand applied the stuff, in several coats over several days. :thumbsup:
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L-166 and L-100 (small).jpg
As I bought them. Next to my L100s.



L-166 woofer 122A (small).jpg
Original woofer with wrong surround job and OEM Aquaplas, on back of L122A.


L166 without grille (small).jpg
Re-coned and Aquaplas added.

L166 with grille (small).jpg
With grille.
 
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