Electrovoice 18" Woofer: smallish Magnet; only 2.3 ohms?

       No one is going to have OEM/EV Sentry III reconing kits, except EV  or an authorized EV warranty center..

        Anyone else would be proffering aftermarket, junk parts.    I'd never consider that an option!

        I'm in the neighborhood of 685 Miles, from Plainfield, NJ.

              "...who knows who has replaced a voice coil???"

      Back in the day: we reconers were buying our parts from Waldom Electronics*.     All of their voice coils were wound with round, copper wire and they carried parts to recone virtually anything commonly manufactured.

       If their catalog/parts list didn't have an exact reference, via the speaker's ID numbers: they could be sized and estimated, to fit and function.
         
       In either case: very seldom exactly to original specs or T/S parameters.


       At the VC and cone junction: EV always used epoxy, which can't be dissolved, chemically.    That would require a reconer to replace everything, to change the VC, which should be easy to spot.    If you're familiar with the original EV components, that is.

           Old as the systems/components you mention are: anything's possible!

        *That's: IF a customer wanted to go the cheap route and not buy an OEM reconing kit, from the likes of JBL, Cetec GAUSS, Altec, etc, which COULD get pricey.

rodman,

I hope you got a kick out of my Bass Base Idea, I did.

        I'm certain you could shake things up, with a design like that!

        My reservations would be: the weight of the moving parts, dropping the voice coil out of center with the gap and having to fight gravity, during half of their musical excursions.

        Those old suspensions are (undoubtedly) quite limber, by now.

        However: far be it for me, to ever dissuade another from their experimentation.

                                            Ya never know!

I've kept my 63 yr old E-V speakers going myself for 48 years, and have spare drivers for my great grandchildren, that's why these E-Vs intrigue me.

If I wasn't so crowded here by the 4,000 lps I just inherited, had the space to store them until I got to it, I probably would have those Model EV-Sixes stacked here already! 

I generally want forward facing, no ports, but this quickie idea, I considered the18WS facing down.

1. key to the design staying shorter
2. one 18WS eBay seller said surround sagged, in one position the coil rubs
3. my 15Ws started their life facing down in Fisher President II, up on 8" bronze legs. Never a coil rub, strong bass. That way 1958 to 1973 when I inherited them.
4. new identical but separate enclosures 75-1985, still facing down.
5. current enclosures, moved vertically 1985-now. Strong bass, discovered bass can be directional, yeah. 
6. 1980 had refurbed, coils and cones, by pro, a voice coil rubbed, he re-did them. 
7. I refurbed coils and cones myself twice over 40 years, vertically, never a rub.
8. I inspect them every other year, never a sign of weakness or sag from surround
9. one cone dried out, near hot air heating vent (since replaced with new damper vent)

I could design nice enclosures, I'm an Interior Designer, specialized in Corporate Office Space, designed and had built a lot of custom furniture and millwork over 46 years, and have current experience with a very good local custom woodworking firm.