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Thread: JBL 2360 Compression Driver?

  1. #46
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    I don't have any experience with the old Alnico drivers, but JBL made improvements in the drivers over the years - things like the coherent wave phase plugs come to mind - that probably influence the sound more than what the magnet is made of. I wouldn't get too hung up over "only the old drivers or TAD".

  2. #47
    Member oks81's Avatar
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    No, I wont get hung up
    Its to expensive. Family needs food on table

    Will start with 2446 + aquaplas and take it from there!
    Remember the history!

  3. #48
    Senior Member ivica's Avatar
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    Quote Originally Posted by Lee in Montreal View Post
    Anyone has graphs comparing response of a 2451SL diaphragm compared to a 2445 Ti or 2441 Al diaphragm ?
    Hi Lee,
    I have shown here ,applying 2450-1.5 with 2332 horn an mentioned diphragm.
    As I have remembered SL can be used up to 11kHz, while AL (JBL for D16R2441) can be used up to 20kHz, while D16R2445 something up to 15kHz.
    Regards
    Ivica

  4. #49
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    I doubt that the 2441 goes higher then the 2450-51 sl .

  5. #50
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    Thinking changing and testing different diaphragms is most about minimizing resonances in higher frequenzies, not acually extend the the frequency range.
    Beryllium is mentioned to be the best with lowest distortion/resonances, but also highest price.

    But will also be a mather of taste I think.

    20kHz? Dont think so! Maybe 15 is a reasonable number?

    Don`t use rallycar for formula1.
    Don`t use 2" compression driver in big horn for tweeter duty, tweeters are made for that.
    Both will function, but not the best

    Best
    oks
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  6. #51
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by oks81 View Post
    No, I wont get hung up
    Its to expensive. Family needs food on table
    Really?

    Personally I think food is overrated.


    Widget

  7. #52
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    Choice 1:
    Oks buys TADs -> Dearest finds frying pan -> big bump in oks poor head....


    Choice 2:
    Keep 2446, try cheap aquaplas -> Dearest happy and oks still get family pizza on Saturdays
    Remember the history!

  8. #53
    Member oks81's Avatar
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    Trying to read on GPA page, just for fun

    What 1.4" drivers will you recommend for 5-15kHz?
    http://www.greatplainsaudio.com/vintage_altec.html

    Don`t know anything of these drivers....just read a little about the 288.
    But then again B, C, D, G, K.......
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  9. #54
    Senior Member ivica's Avatar
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    Quote Originally Posted by dezmond View Post
    I doubt that the 2441 goes higher then the 2450-51 sl .
    Hi dezmond

    I would You to do some measurements, just to insure yourself.
    In order to remember You AL is lighter then Titanium, not to mention the weight of the "aquaplas"....

    reagrds
    ivica

  10. #55
    Member oks81's Avatar
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    Remember the history!

  11. #56
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    D8R2450SL Aquas in position!
    Smoother, nicer, bether than standard diaphragm!

    Less treble then standard, but that is because standard diaphragm is quite resonant, specially around 12kHz.
    Aquas also less sensitive then stndard.

    But for hifi use, no question about it, aquas sounds bether!

    I`m happy!

    Thanks for all the help guys!!
    Remember the history!

  12. #57
    Senior Member Lee in Montreal's Avatar
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    Quote Originally Posted by oks81 View Post
    D8R2450SL Aquas in position!
    Smoother, nicer, bether than standard diaphragm!

    Less treble then standard, but that is because standard diaphragm is quite resonant, specially around 12kHz.
    Aquas also less sensitive then stndard.

    But for hifi use, no question about it, aquas sounds bether!

    I`m happy!

    Thanks for all the help guys!!
    Interesting. Two weeks ago, I swapped the 2445 w/ original titanium diaphragms on my 2360s for 2440 w/ Radian diaphragms. The sound was quite different. Less harsh, softer, and had to raise the attenuators by a several dbs to match the previous output. Overall, it was a good move.

  13. #58
    Member oks81's Avatar
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    Wow! 2440`s with Alnico! Sweet!
    Don`t know how aquas will be in those, but maybe in the 2445 you can try aquas?

    I don`t have to much experience with this, only heard 2446 with standard and aquas.
    Remember the history!

  14. #59
    Senior Member ivica's Avatar
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    Quote Originally Posted by Lee in Montreal View Post
    Interesting. Two weeks ago, I swapped the 2445 w/ original titanium diaphragms on my 2360s for 2440 w/ Radian diaphragms. The sound was quite different. Less harsh, softer, and had to raise the attenuators by a several dbs to match the previous output. Overall, it was a good move.
    Hi Lee,

    As I have remembered, 2445 Ti (JBL orig) diaphragm can work almost up to 20kHz, with some ringing over 10kHz, but Radian can not reach not even 14kHz. I have been them testing with JBL2441 core,
    (with 2311 horn) so Your results are expect-able for me. with Radian diaphragms I would expect to use 2405 as UHF driver....
    with SL diaphragm, over 10~12Khz, almost nothing, but 2441-JBL ALuminum, different story (20kHz, no problem).

    Regards
    Ivica

  15. #60
    Member oks81's Avatar
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    I use miniDSP 2x4 on my system.

    On the standard ti diaphragm I had the following setting:
    1650Hz -8dB 1Q
    2450Hz -1,5dB 2Q (High Shelf)

    With aquas I use this:
    1800Hz -7,5dB 0,5Q
    8000Hz 1,5dB 1Q (High Shelf)


    With this settings I have about the same treble, but the aquas not so resonant around 12kHz. Sounds cleaner.
    It`s playing to about 14-15kHz before it drops.
    20kHz..?? Ok, maybe, but think its most resonances..? maybe with Truextent be..?

    To get it all clean in the top thinking treble is the best. It`s made for the high frequencies, something the 2446 and 2360 is not so much.
    Remember the history!

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