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Thread: JBL 2360 Compression Driver?

  1. #106
    Senior Member ivica's Avatar
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    Quote Originally Posted by oks81 View Post
    Thanks for responding Macsic!

    Yes, the 2441 i read is very good.
    Alu diaphragm, beside beryllium I have not tested.
    Beryllium is to expensive.
    Alu, maybe some day I buy and try.

    But I think the original ribbed TI sound quite good as long as use tweeter from 6-7k.
    Over 7k the TI diaphragm sound really bad with a lot of resonances.

    I have the 2405, and it`s really good!!
    2404 is just a tiny bit better with the 2360, but it`s not by much!


    I will not test the Altec 288 as it needs adapter.
    Adapter makes the already long throat of 2360 even longer...not good.

    But, yes, I read and people tell the 288 is really good driver!!
    And it can be bought new from GPA!
    Hi oks81,

    I would not compare TAD 4" diaphragm driver with JBL 244x loaded with Be (Truext) diaphragm, may be with 476Be only would comparable, but if 2405 is applied, I think that JBL SL diaphragm would be acceptable solution too, as it is not 'ringing' over 10kHz.
    Using JBL 4" AL diaphragm (2441) under 800Hz have to be done with more care, especially if not too steep HF network is applied. May be even 2445 Ti diaphragm is not so bad solution too.

    regards
    ivica




    H

  2. #107
    Member oks81's Avatar
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    Sorry for late reply

    Think I will keep as is with the ribbed Ti, it sounds nice as long as lowpass it at 7k.
    Maybe try the 2441 dias one day... we will see.

    TAD, or Truextent be is to expensive I think.
    But, of course the best!


    Yes, if using 2405 and want to cross at 8-10khz the aquaplas will be better than ribbed Ti as the Ti starts ringing above 7k.


    Have read that 2445 TI dias is i a bit more "harsh" than ribbed Ti. But never heard.

    oks
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  3. #108
    Senior Member jbl4ever's Avatar
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    I liked the 2482's on the 2360 horns at 400hz using the 24db/octave M553 crossover. The highs were done with the little 2407j ring radiator between 4.6 and 4.8 Khz

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  4. #109
    Member oks81's Avatar
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    Wow! Thats a nice setup!
    Like the idea of using 2482 with phenolic!
    About the same crossover point as I used with BMS4590, used 450hz in the end.

    How does 2407 compare to the 2404?
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  5. #110
    Member oks81's Avatar
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    Some changes

    Name:  OK JBL 2360 TAD 4002 DEQX HDP-3 JBL 2226 Bassreflex.jpg
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  6. #111
    Member oks81's Avatar
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    Well, the obvious is new boxes with bassreflex.
    Four boxes with one JBL 2226 in each. Volume is about 140 litres ++ and tuned to 28hz.
    It does require some EQ to get the 2226`s to play bass with this low tuning and volume.

    Saved som money and got a nice pair of TAD 4002 for the 2360`s.

    Name:  JBL 2360 TAD 4002.jpg
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    The 2405 tweeters will be mounted later.

    I have also thrown away all the passive filters and have invested i a DSP, DEQX HDP-3.
    Only passive parts left is safety caps on the TAD`s.

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    For the bass speakers, Midgard Audio Oberon 4.1

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  7. #112
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    Impressions impressions impressions


    We want -no we need- sound Impressions!

    Best regards

  8. #113
    Member oks81's Avatar
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    The sound is quite good enough by my own standard.
    The TAD 4002 is a bit bether than 2446, not to much, but some, in everything.
    So was also the price...
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  9. #114
    Member oks81's Avatar
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    Name:  JBL 2360 2405 2220 2227 TAD 4002.jpg
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    Changed for JBL 2220 in upper and 2227 i lower box.
    Testing 2405 tweeters playing backwards.

    Sounds good enough for playing Black Metal...
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  10. #115
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by oks81 View Post
    Sounds good enough for playing Black Metal...
    Great! How does less energetic music sound?

    I thought I'd preserve your photo for posterity... linked photos have a habit of disappearing and I think your rig looks pretty cool, especially with that rear firing 2405. It'd be a shame to lose it.


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  11. #116
    Member oks81's Avatar
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    Thanks Widget

    If you think of heavy music with bad recordings it is as good as it gets.
    But in general heavy music sound really good in big horn speakers as they have attack and dynamics.

    The tweeter firing backwards was just an idea and a test. Easy to put them there, just using an 0,5uF cap as crossover for them.
    Can`t really say to much, but maybe it give some ambience and helps the 2360`s beaming over 10k.

    Edit: Tested at same song with tweeters on and off, there is a little difference, more air in the top.
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  12. #117
    Administrator Mr. Widget's Avatar
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    I think your system looks badass and I bet it sounds pretty darned good.

    I’m familiar with the 2220s and the 2360... both can kick butt. No experience with the 2227, but I am sure they help flush out the bottom.


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  13. #118
    Member oks81's Avatar
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    Think the 2227 was mostly sold in the european market?
    They do sound nice.

    Both 2220 and 2227 being more like midbass drivers, they do need some EQ to play bass.
    Their short stroke specs I do probably have quite a bit of 2.nd and 3rd. harmonic when turn up the volume.
    2220 has an Xdamage of 16mm peak-peak but at this stroke a big part of the voicecoil is out of the gap.
    Probably hard to damage since made this way, and with high distortion if driven this hard.

    Find both drivers being bether than the 2226`s in the midrange.

    Have tested crossing from 370hz and up to 1000hz.
    Didn`t play loud with low crossing, beryllium quite expensive....
    Do actually cross at 1000hz.
    A bit loss of 2360`s big image but with a bit cleaner sound.

    Som people love, som hate the 2360.
    I like it
    Big image but with some coloration and growl.
    Tried to find the reason for it`s coloration by simulation in hornresp.
    When put it in hornresp don`t get the shape, but it`s expantion at must see the horn as two segments.
    Both the throat and mouth is exponential, the throat loading harder than the mouth.

    The result showing quite a bit of variation in the acoustic impedances.
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  14. #119
    Member oks81's Avatar
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    The Frequency response.

    Name:  JBL 2360 FR.JPG
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    The simulations ar not all correct, but maybe gives an image on what`s going on.

    For the driver I just used som data on JBL 2440 found on diyaudio.
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  15. #120
    Administrator Mr. Widget's Avatar
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    It doesn’t surprise me that you would like a higher crossover frequency. I’d probably go with 800Hz. I think I would want a proper bass driver in the mix. Perhaps even a VLF capable driver.

    How loud do you play back music measured dBC at your listening position when you really crank it up?


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