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Thread: JBL 4343 build.....

  1. #1
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    JBL 4343 build.....

    So I decided to build a 4343....my original plan was to build a 4333, but I know after couple of months, I will end up building a 4 way...
    so to save time and money....why not just go straight to a 4 way...i know im in over my head on this build...
    So please help me out....

    I will be running 2405, LE85/H91, 2122, 2226...i will have a 2235 maybe after i get rid of some stuff...
    I do not have the crossover yet, this is my problem....id like to get a DIY 3143/3144....i know it will be hard to find an original one...and if theres one
    for sale, its probably going to cost me an arm and a leg...

    this build is probably not going to be an exact copy...this is my first DIY from scratch..ill try my best to make it look like the original...

    please comment if theres anything i need to know or watch out for while doing this build...thanks in advance!!!!

    oh, and i do not have all the cool gadget to test the frequencies and all...like all the graph thingy that I see from other thread/build..
    so this is basically a build and listen kind of deal...and hope that all will sound good...
    Semper Fidelis

  2. #2
    Senior Member ivica's Avatar
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    Quote Originally Posted by ARMED View Post
    So I decided to build a 4343....my original plan was to build a 4333, but I know after couple of months, I will end up building a 4 way...
    so to save time and money....why not just go straight to a 4 way...i know im in over my head on this build...
    So please help me out....

    I will be running 2405, LE85/H91, 2122, 2226...i will have a 2235 maybe after i get rid of some stuff...
    I do not have the crossover yet, this is my problem....id like to get a DIY 3143/3144....i know it will be hard to find an original one...and if theres one
    for sale, its probably going to cost me an arm and a leg...

    this build is probably not going to be an exact copy...this is my first DIY from scratch..ill try my best to make it look like the original...

    please comment if theres anything i need to know or watch out for while doing this build...thanks in advance!!!!

    oh, and i do not have all the cool gadget to test the frequencies and all...like all the graph thingy that I see from other thread/build..
    so this is basically a build and listen kind of deal...and hope that all will sound good...
    Hi ARMED,

    I would suggest You to use 244x & 2311 instead of 242x&2307

    regards
    ivica

  3. #3
    Dang. Amateur speakerdave's Avatar
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    I agree with Ivica. You should follow 4313B's 4345 build except on a 4344 cabinet.
    "Audio is filled with dangerous amateurs." --- Tim de Paravicini

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    thanks guys... ill see if i could source them out, is there anything i could do with the crossover to compensate the usage og LE85/H91... you
    Semper Fidelis

  5. #5
    Senior Member ivica's Avatar
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    Quote Originally Posted by ARMED View Post
    thanks guys... ill see if i could source them out, is there anything i could do with the crossover to compensate the usage og LE85/H91... you
    Hi,

    Our forum member 4313B has suggest something like this:
    so You can start from here, and adjust the driver sensitivity.

    regards
    ivica
    Attached Images Attached Images  

  6. #6
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    thanks ivica...

    this is going to be a nightmare
    Semper Fidelis

  7. #7
    Senior Member quindecima's Avatar
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    It will be easier to build the exact copy than to formulate your own, those plans are already out there. I agree with the others, follow 4313b's plans you can't go wrong with them.

  8. #8
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    if i could just find someone to build the crossovers for me....ugh
    Semper Fidelis

  9. #9
    Senior Member ivica's Avatar
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    Quote Originally Posted by ARMED View Post
    thanks ivica...

    this is going to be a nightmare
    Hi ARMED,

    If not "CC-network" is acceptable, then You can substitute come caps and res with their equvalent

    1/Ceqv= 1/C1 + 1/C2 .....
    1/Reqv= 1/R1 + 1/R2 + 1/R3 ......

    and forget 'polarization' resistors ( over 1MOhms)
    may be can help

    or even less component version for the beginning

    regards
    ivica
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  10. #10
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    so is this correct? again, im just using what I have as far drivers...
    2404h, LE85/H91, 2122h, 2235 (2226 at the moment)
    with this design I could bi-amp it also correct..(2 inputs)

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    I might as well do it myself...
    Semper Fidelis

  11. #11
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    when I order the parts, for example I need a capacitor 72pf, do I get couple different ones to get 72? like 60+10+2?, do i need to worry about the tolerance and the voltage? i see 250/400v....1%/5%
    this shows how bad I am when it comes to crossover components.. and for the resistors, the number mean the ohms correct? I need to read a fricking book!

    and are the film/foil capacitors and metalized polypropylene capacitors the same...what should i get? will i even hear the difference?

    I could fix a multi million dollar fighter jet/aircraft and here i am struggling with a damn crossover
    Semper Fidelis

  12. #12
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    i got some pieces cut, i left the front baffle 1 piece..it will not be going sideways...
    thats the reason i picked 4343, i wanted the mids and highs to be higher...
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    Semper Fidelis

  13. #13
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    the dog house internal dimensions will be 14.5x10x6
    Semper Fidelis

  14. #14
    Member y60kuro's Avatar
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    2121 box

    Top size: 445mm x 267mm

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    height : 139mm (include top 13mm )

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  15. #15
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    thanks y60kuro!!!
    Semper Fidelis

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