What is a JBL 2306?

[willxox]

I've got a couple of 1 inch throat conical JBL horns that are stamped 2306. Does anyone know what these might originally have come out of? I can't find anything about them on the JBL site or anywhere else on the net.
Any help much appreciated.

[4313B]

How about a visual?

[Hofmannhp]

I've got a couple of 1 inch throat conical JBL horns that are stamped 2306. Does anyone know what these might originally have come out of? I can't find anything about them on the JBL site or anywhere else on the net.
Any help much appreciated.

Hi Willxox,

is it possible that it's the 2406 ?
That's the HF-driver of the M-Pro Series speaker MP412 / MP 415, a ring radiator.

As Giskard wrote

HP

[subwoof]

The 2306 is the 2307 conical horn that was painted black and then the inside was turned on a lathe to produce a polished aluminum appearance.

This was used in the first generation 4690 cabaret 15" 2 way speakers.

Later versions of that cabinet used the 2370 then 2370A which had superior dispersion.

Here is the tech sheet - the early generation cabaret cut sheets shoewd pictures...:o)

http://www.jblproservice.com/pdf/Cab...ries/4690A.pdf

sub

[johnaec]

Those horns look like they must have almost no dispersion without a diffraction lens. 'Anyone know the coverages specs, without the lens?

John

[edgewound]

Those horns look like they must have almost no dispersion without a diffraction lens. 'Anyone know the coverages specs, without the lens?

John

Something like 20 degrees. A conical cannon.

[subwoof]

I had some lit that said the conicals were 40 degrees but not sure where it is anymore...it should say the specs in the older proline cats on this site though.

that cabinet ( 4690 ) was great as a drum monitor back in the 80's - point the horn at the drummers head and it was muffled just right by the unbiqous hairband...


sub

[willxox]

Thanks subwoof, you've nailed it. They do indeed have bare aluminium interiors. I'm now convinced, rather than just suspecting, that they're not much good to me. I guess they could be handy for a dj monitor, tho. Or maybe a doorstop.

Thanks for everyone's input.

[short_circutz]

According to what I've been able to find, when the slant plate lens is mounted on it, it widens the HF dispersion to 80 degrees h by 45 degrees v. I would hence assume that dispersion without the 2308 slant plate lense would result in a dispersion of 45 degree conical dispersion.