Just got a pair of LE14A. Still have intact, original surrounds but they have seen better days. Will have to get new surrounds. The serial numbers are 2858 and 2859. Very low numbers, no? The strange part is they are 16 ohms.
Which means I can't use it in my L222 or Dorian S12. Time to build somthing, I think.
Hmm, to build a cab all I need is a table saw, router, sander, clamps, etc, etc.
Couple of grand for a box. :-)
had L25,L36,L40,L120,L300,AquariusIV(2),S1,4408 have L65,L100,L222,DorianS12,B380
Well, I have the other two 16-Ohm LE14's you're gonna need, S/N 5429 and 5430. I already have another 4 8-Ohm ones set aside for this project. We're gonna build triple-chamber bandpass subwoofers based upon the Control SB-5 model, scaled up for LE14's.
The drivers will mount in face to face isobaric pairs, wired inverse parallel, on the two interior panels dividing the box into three chambers. All we need is for the box-modeling gurus here to tell us the box dimensions and the sizes for the 3 ports. We're gonna build outta 1-1/8" Sturdifloor.
Check it out HERE!
Structurally rated subfloor plywood or oriented strand board. Whichever the lumber yard has in that thickness, OSB preferred, probably.Originally Posted by Alex Lancaster
The thickest and strongest stuff we can buy without payin' a huge premium....
Gentlemen,Gentlemen
Why fool around with measley little 14 inchers when the big guns were already done by the pros.
Follow this link and then when you are on that page-check out the 4688-4
http://www.google.com/custom?q=4688-...www.jblpro.com
Oldmics
Oldmics: 30 X 30 X 60 and 250 Lbs.? Naw, we're gonna build something PRACTICAL here. Those are just one channel.
Do we have any details on 4685 and 4688? They CLAIM to be pushpull, and even TCB (?), but only use two drivers.
Last made 1982, no exploded view Tech sheets.
SB-5 is two-channel acoustically summed in the center chamber using four pushpull drivers.
We can use up the surplus of LE14's floating around out there.
Why not? Have you measured them, or is that what is labelled? Giskard has posted numerous times on this "labelled impedence" issue, and IMO, it may not preclude your planned project. Although, I too am intrigued with the replies you've gotten...
bo
"Indeed, not!!"
All the 16 ohm LE14A I've seen are coax units, I have one in a L55. Are the pair you have coax, or just a single driver?
Isn't the LE14C the coax version?
John
Ya, that's correct, I hadn't finished drinking my morning coffee when I wrote that reply.
4 ea. "8-Ohm" = 5.8, 5.8, 5.9, 6.1
2 ea. "16-Ohm" = 5.8, 6.2
The 16-Ohm units are the oldest ones; original Lansaloy surrounds, so not recones.
Looks like the early numbers game is all.
Still, I'd probably want to use 4 "16-Ohm" together, not mix them.
Notes:A) Measured at the solder terminals behind the push terminals, which are oxidized and unreliable for DCR measurements.
B) Gotta be quiet. Microphone effect is apparent. DCR is measured with low current. How low, I dunno. Itza Fluke 77 multimeter.
Yep, we've hashed over this before but you've brought data to the hash.
Data is our friend.
Thanks!
A very similar enclosure was designed by Steve Deckert at Decware.
It is called the Housewrecker.
http://www.decware.com
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