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View Full Version : Are these aftermarket 2404H diaphragms?



Cozmo
02-17-2016, 07:45 PM
Personally, I wouldn't know by looking at them, so thought I would pose the question here with photos.

JeffW
02-17-2016, 08:17 PM
Look right to me, the 2402 diaphragm in a 2404 makes a 2404H-1, used in the Cabaret series like the 4612.

1audiohack
02-17-2016, 08:29 PM
Look right to me, the 2402 diaphragm in a 2404 makes a 2404H-1, used in the Cabaret series like the 4612.

Concur.

Barry.

Hi Jeff! :wave:

Cozmo
02-18-2016, 09:03 AM
I guess I didn't word that right.
What I meant was, are these aftermarket or OEM JBL diaphragms.:confused:

Earl K
02-18-2016, 09:13 AM
http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=69922&stc=1&d=1455767076

The sort of numerology seen above ( written on the diaphragms support ring, is classic JBL for the time period ) .

I really thought that Jeff was quite clear in his affirmation that the sample is OEM, JBL / you're not going to get anyone to give you a money-back guarantee ( beyond informed opinion ) !

:)

JeffW
02-18-2016, 09:20 AM
I guess I didn't word that right.
What I meant was, are these aftermarket or OEM JBL diaphragms.:confused:

Sorry, by "right" I meant JBL.

Cozmo
02-18-2016, 10:06 AM
OK, thanks guys.
Now that's cleared up.:thmbsup:
I misunderstood your responses.

johanwholst
02-20-2016, 04:31 AM
Look right to me, the 2402 diaphragm in a 2404 makes a 2404H-1, used in the Cabaret series like the 4612.

Jeff: I have read somewhere that there is also a diferrence between the phase plug in 2404 and 2404-1.
Is this nonsense?

1audiohack
02-20-2016, 06:29 AM
They are different. Running on memory!: the base diameter on the 2404-1 phase plug is about 1.600" and the 2404 is about 1.720". Something like that.

There s a thread started by Widget called "Ring Radiator Measurments" or differences that is like 13 bazzilian pages long that has just about everything one could possibly want or need to know about this family of super tweeters. :)

All the best,
Barry.

Mike Caldwell
02-20-2016, 06:36 AM
The big give away on the knock off JBL 2402, 2403, 2404, 2405 diaphragms I have seen is that the voice coil leads are at least twice as wide as the originals.

Don't forget the cone phase plug on the 2403/076 is yet another variation.