View Full Version : 112a or 2108 specifications pdf

12-28-2016, 05:17 AM
Hello im trying to locate the pdf for either driver as id like to know the specific relationship
For distance from the spider to the top of the magnet...

I understand the le8t spacing is 9.4mm in trying to recreate the 2108/112 im only assuming
this is the figure id need to meet,

it was brought to my attention the distance from a 2123 maybe larger in its measurement &
the 2108 maybe greater then the le8ts 9.4mm.


here are the 2108 & le8t right to left side by side, from the image the baskets
look identical or close to it, I do see the spider as a smidge taller and basket seems a touch wider as well, maybe not identical. The spider height atop the frame seems fair.
This only leaves the rear magnet. If its seated as aother jbl relationships are
Or just resting atop the frame...


12-28-2016, 05:56 AM
Looks like TechBot never got the PDFs posted for the 112A/2108A (Alnico) drivers,
but the data IS there for the 112H/2108H (Ferrite) ...



12-28-2016, 08:39 AM

They did not specify, maybe someone knows if the magnets are seated or,
Strewn atop the frame.

I read the 2122h vc
3" id 1.240" length, .400" winding width.
2108h/112h: .170" winding length at 52 turns. = 2122 oem vc
0.23 windings length difference.

anyone know the turns on the 2122h?
thanks pos for starting the thread.