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  1. Earl K, Thanks for the idea. Worth exploring...

    Earl K,

    Thanks for the idea. Worth exploring if I can't get the original. However, since you have a single Dukane 5a540, would you be interested in selling it to me? I also have a single working...
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    thread revival

    Has anyone compared the 4" Be diaphragms between the 2240-2451 JBL models and if the sonic character changes through the driver models?
    Herman
  3. Dukane 5a540/Coral -- repl diaphragm recommendation?

    Hello,

    I got a pair of Dukane aka Coral M100 drivers (no diaphragms). Can someone recommend a source of aluminum or phenolic diaphragms that fit the Dukane 5a540 properly?

    thanks,
    Herman
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    TAD sound

    >>>I didn't like the TAD 4002z when I heard it .

    Rich, I have the TAD 4002 and I don't really like it either. Too bright, like an arch welder. However, on the JBL 2384 horn, with the...
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    x-over freq

    What's the optimal crossover frequency for the 2384 horn mated to JBL 2451be or TAD 4002? Maybe that will help to narrow down the choice between a 15" or 18" midbass woofer? I plan to use that woofer...
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    That's one option. Generally, is there a rule of...

    That's one option. Generally, is there a rule of thumb when selecting an 18" that is optimized for upper freq range, like low Le or low moving mass? What should I look for?
    Herman
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    jbl 2384 with 18" midwoofer?

    Hello,
    I've got a JBL 2384 horn with jbl 2451 driver. This is just a thought: has anyone tried pairing these with an 18" woofer? Say 700hz crossover?

    Here's my idea: mobile 3 way system with...
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    2451Be EQ

    Ivica,

    what is the problem with putting EQ on 2451Be (Trex-Be), as opposed to JBL Be (476)?

    Herman
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    spacer

    Can you please provide more information on the needed spacer? I will use 2451 CD with 2384 waveguide.

    thank you,
    Herman
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    2451 & 2384

    So far am leaning towards 2451be+2384 or Radial type horn.

    Will I need a spacer between 2451 & 2384 horn combo?
    What is the horn model no from JBL 4367? Is it the H9800?

    Herman
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    Guys, thanks for the excellent responces! I'm...

    Guys, thanks for the excellent responces! I'm really amazed by the thoughtfulness and amount of good information to digest.


    My first surprise, Ivica, is that the Be Trx 4" diaphram will need an...
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    Which horns for JBL 2451 Be drivers?

    Hello,

    I now have some 2451h drivers with original diaphragms. My plan is to load them with Be diaphrams and try to make a nice 2-way monitor. 3-way is an option but I will barely manage making a...
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    Thank you, so far.

    I've thought about the mentioned recommendations and, in place, decided to try the JBL 2451H on the JBL horns (were sold together). Just curious, what's the best source for the Be diaphragms, now?...
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    SH50’s

    Thanks for the tip Barry! I would love to hear the SH50’s. They may be very good indeed. I'm in Chicago and if you know of a good way to hear them please let me know. Couple of questions for you,...
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    Thanks you for the recommendations so far. JBL...

    Thanks you for the recommendations so far.

    JBL M2's: I'm trying to stay away from DSP processors. Nothing wrong with using them for mastering work but for pleasure listening -- I prefer to keep...
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    Mr. Widget, Is the 15" coax a dead end in...

    Mr. Widget,
    Is the 15" coax a dead end in respect to the issue I described?
    I have not heard the JBL M2 nor other TAD based monitors or the JBL Cinema 2-ways. Have you compared M2 to other...
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    The next logical step from my UREI 813

    I'd like to ask for your thoughts on some possible directions I can take, after having used the UREI 813bx (with JBL coax) for some time now. I feel I can formulate what I like/dislike and maybe the...
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    let's do this, looking for cooperation in Chicago

    Thanks for the modeling! The phase plug will reduce this 9db beaming and diffuse the sound energy on axis, providing much more even coverage. This works well in my midrange horn, the picture of which...
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    Sample of the phase plug horn

    http://www.funktion-one.com/products/resolution-3-sh/

    Look at the midrange section, it uses a 10" mid. The idea is to keep this concept but adapt to the 100Hz horn with 12" driver.

    55439
    ...
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    E120 chassis with 2220 cone question

    The e120 and 2202h have different magnet depth. So what happens if I re-cone e120 with 2202h cone?

    As far as the phase plug goes:
    If the e120 pole piece has a hole in the center I can mount the...
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    phase plug

    the horns will sit on the floor. I will try to get them as far away from the walls as possible, not sure the exact distance yet.
    The phase plug does not attach to the cone, rather to the pole piece...
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    Here's a secret

    I will be removing the alum dome completely. It will be replaced with a big phase plug to reduce the on axis beaming.

    55408

    Because of this the 6 db/octave low pass filter will work very well...
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    not 15" woofer

    Marten,

    I currently have an Edgar midbass with 15" EV driver. For whatever reasons, I am not happy with them. Maybe it's the 15", maybe not, maybe the horn itself. I do not believe any 15" can...
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    JBL e120 in midbass horn application

    Hi,

    I am planning to build a "proper" midbass horn to cover 100 to 500hz to replace my current 80Hz Edgar straight Horn (a compromised design). Efficiency goal is AT LEAST 103db, to match my other...
  25. Baron, I tried 2 horns on the JBL 2470: ...

    Baron,

    I tried 2 horns on the JBL 2470:

    Altec 811b
    http://picasaweb.google.ru/noviygera/BasementSystem/photo#5238146838059017634...
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