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View Full Version : Jbl le111a backplate thickness.



bldozier
01-05-2016, 05:48 AM
Hello,
Happy new year,

Im trying to reconstruct the jbl 2108 using either a k110,le10, or 112a.
The le110d,d however I cannot locate its pdf to check pertinent information...

So is anybody aware if the le10 / le111 have the same backplate thickness, I know the le111 is a woffer,
Maybe its thicker for this application.
Thanks.

bldozier
01-22-2016, 03:35 AM
The xmax for the le111a and le10a & h is .24
Top plate thickness is the same for all three drives according to this information
Briqn.

bldozier
01-06-2017, 11:40 AM
Le111a backplate thickness can any confirm .28 or .350

Earl K
01-06-2017, 01:01 PM
Gaps are always located within a top-plate.

The 2 top-plates ( at least what's visible above the frame inset collar ) measure as identical ( to these old eyes ) at @ 5.5mm .

:)

Earl K
01-06-2017, 01:33 PM
Magnetic Assemblies that use Ferrite Magnets have a back-plate ( it's part of the magnetic return path ) .

Just trying to keep the vernacular straight here.

:)

bldozier
01-06-2017, 01:56 PM
What would you prefer I call it? Gap.straight.
can anyone tell me the jbl le111 gap thickness.

Earl K
01-06-2017, 02:21 PM
http://copyright.lenardaudio.com/laidesign/images/a05/a05_speaker.gif
https://www.aperionaudio.com/images/connect/ae_c2_v4.jpg
http://www.eighteensound.com/portals/0/Img/Img_tech/Img_pag_tech/ttc_fig1.jpg

http://www.simplyspeakers.com/assets/images/Diagrams/Speaker-Cross-Section.jpg
These are all magnetic assemblies ( utilizing ferrite magnets ) and have, front and back ( top & bottom ) plates.

:)

Earl K
01-06-2017, 02:34 PM
Here's a pic showing ( an obvious ) JBL alnico woofer ( the bottom woofer ) .

http://www.magnetpole.com/wp-content/uploads/2011/07/alnico%20speaker.jpg

:)

Ed Kreamer
01-06-2017, 04:38 PM
It is important to refer to the parts by the correct nomenclature so that any one responding knows what is being discussed.

bldozier
01-08-2017, 12:39 PM
I did look above, thanks for the lesson.

Ed Kreamer
01-08-2017, 01:05 PM
I'm sorry if you took offense, I was not trying to be snarky, or rude or look down my nose. I am known to be prone to error.

Ed

bldozier
01-09-2017, 10:49 AM
Its ok earl we're both human I do it all the time