Firstly is it possible just to trip back to top cone
Use a 2108 surround
Would it work.
Crazy yes just looking at options
Firstly is it possible just to trip back to top cone
Use a 2108 surround
Would it work.
Crazy yes just looking at options
could you rephrase the question, I'm not making any sense of what you wrote.
When faced with another JBL find, Good mech986 says
, JBL Fan mech986 says
Apart from the typo the question seemed quite straight forward, although I have no answer and not sure I would want to try.
Ok help me out then, I am not making sense of the question.
When faced with another JBL find, Good mech986 says
FWIW, it's not just you who can't figure out what the hell Dozier is talking about or asking.Originally Posted by mech986
". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers
I think I can translate.
He wants to know if he can get a 4" recone kit like the 2235H trim the cone down to the correct size and retrofit it in a 2108/112 basket?
I think thats what he is getting at......And if so no.....its not possible for multiple reasons.
If the OP is willing to try something like that, and actually has the cores, why not just have Orange County Speaker install their after market recone?
"Audio is filled with dangerous amateurs." --- Tim de Paravicini
Ok, so he wants to know if 2108 can be created when there is no OEM cone kit left?
Well the 2108 is the 8" midrange and only has a 3" voice coil. The 2235H uses a 4" voice coil so I don't see how those would be compatible.
The 2214H uses a 3 inch voice coil, but woofer voice coils are likely way too deep for use in a midrange application, magnetic circuit speaking. That and the cone is very deeply angled so wouldn't likely fit well with the needs of a shallow cone/shallow frame like the 2108.
The 2203A/H 12 inch woofer also uses a 4 inch voice coil, and as such, might be considered spiritually like a 2235H cut down to fit a 12" 2204 type frame.
Now if he's taking a 2108 frame and putting a 4" Voice coil gap magnetic system on it, well, then a Frankendriver is being thought of. It would pack a heck of a wallop but again, most of the 2235 type cones are deep dish concave so not sure they would fit in a 2108 frame. A lot of engineering, trial and error would have to be done. Probably at that point, try getting an unassembled 2235H aftermarket kit to see about how fitment might work. Doubt though it would be much of a midrange driver due to weight of coil and 2235 cone type. You probably would need something like a LE8 or maybe LE10 type and cut that cone down.
The big problems with trying to "design" a replacement 2018 is getting all the elements correct - voice coil diameter / winding length, magnetic gap and length, underhung/overhung, cone weight, cone rib/damping, spider softness, etc.
If he is trying to replicate a 4315 or get parts for that, and has the 2108 frames already, yes, I'd say that the aftermarket recone is probably the most straightforward way to do it. Or to contact GordonW or Edgewound for possibly a more customized solution.
When faced with another JBL find, Good mech986 says
Sorry, it was could I recreate a 2108, for a 4315s. I have le8t & pr8 baskets. I have had to procure le10a baskets to do a magnet swap. Looks like I may have hit the wall however bcd on the frames are different... the le8t being something like 130mm the space between screws is larger on the le10a, 3 1/4 vs 3" on the le8t. The frames for the 2108 seem to be a different cast then le8s to accommodate the larger magnet.
Bummed, dont know what iam going to do.
I have a 2108H that I just refoamed. PM me If you're in the market.
Thank you sir. I needed a pair. I know how it is looking for the unobtanium. My luck another single will feather, I will remain pat, thanks for your offer.
Do you have pics front and rear of this driver? Did you shim or use the tone method for centering?
When faced with another JBL find, Good mech986 says
Didn't do either I don't have a 2108. Trying to build them. ☺
Has anyone tried or can attest to the difference in baskets between the 2108/112a & le8t baskets.( which I have )
I have bought le8s thinking they could be tunrnt into ( turnt ) into the elusive 2108/112a. An also have pr8 baskets which I was going to use for, L212s,
im still excited for this baby project, but this is a hurdle hopefully not a tall one.
The second photo being the 112a, the seat to me looks extend closer to the basket outward ring, I guess if I needed to absolutely have one with older le8 frames, I could machine the basket to allow the use of the larger magnet, so le8 as of now from my knowledge dont seem compatible, the 2108 frames however, for any reason ypu wanted seem to be able to use bother a 2&3 inch magnet.
im wondering if inwould hqve better luck with a 221x basket
I managed to free the le10 motor. Here is a look.
Here is the le8th I had with the magnet also removed, I have zero idea what the recessed area is being used for or if its necessary as the motor sits atop on the plate, an rest againt the shoulder
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