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Thread: Help With Potential DIY Project

  1. #1
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    Help With Potential DIY Project

    Hi all,

    I am currently contemplating pursuing a DIY project. I was hoping people would chime in and suggest which way I should go. I currently have the following components on hand:

    1 - pair of JBL 2395 (horns+lens+stands)
    1 - pair of JBL 2350 (with 2" throat adapter)
    2 - pairs of JBL 2441 (one pair with titanium and the other with aluminum)
    1 - pair of NIB JBL 2404H baby cheek tweeters

    Any suggestions on which way I should go. Part of me wants to consider the pursing the JBL 4355/3155 that Mr.Widget built - but need to check with him if it is worth the cost.

    Additional components to consider:

    JBL 2405 tweeters (as it seems to be the forum favorite)
    JBL 2235H - seem to be impossible to find, can't decide if I need 2 or 4
    JBL 2245 - again tough to find

    Any thoughts?

  2. #2
    Heather [Senorita member] hjames's Avatar
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    Do you know of any JBL speakers that uses any combination of them??
    Maybe 2 ways even?

    Got box building skills?

    How are your custom crossover chops?


    Quote Originally Posted by dkalsi View Post
    Hi all,

    I am currently contemplating pursuing a DIY project. I was hoping people would chime in and suggest which way I should go. I currently have the following components on hand:

    1 - pair of JBL 2395 (horns+lens+stands)
    1 - pair of JBL 2350 (with 2" throat adapter)
    2 - pairs of JBL 2441 (one pair with titanium and the other with aluminum)
    1 - pair of NIB JBL 2404H baby cheek tweeters

    Any suggestions on which way I should go. Part of me wants to consider the pursing the JBL 4355/3155 that Mr.Widget built - but need to check with him if it is worth the cost.

    Additional components to consider:

    JBL 2405 tweeters (as it seems to be the forum favorite)
    JBL 2235H - seem to be impossible to find, can't decide if I need 2 or 4
    JBL 2245 - again tough to find

    Any thoughts?
    2ch: Oppo, JoLida 502CRC, JBL L212, 18ti,240ti; Heath AS101, Von Schweikert VR4
    7.1: Oppo BDP103D, B&K, UREI 809A, JBL B460

  3. #3
    Senior Member grumpy's Avatar
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    What experience and resource do you have available? There's certainly no
    guarantee that assembling wonderful, individual components will have a
    wonderful, combined result. As Heather mentioned, starting from a known
    product and modifying to taste -can- be a shorter path to a satisfying end.

    Giant, loud, blow your ears out, JBL-based boxes are an attainable given.

    The 2395/2441's over a pair of 2235's would be interesting, certainly from
    a visual standpoint.

    The 2404's might spray too wide, depending on your room, to match the
    midrange, but ok. .. where do you want to go and how much weight can you
    pull on the project? Measurement equipment? Crossover design experience?
    Assembly skills? ...

  4. #4
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    Quote Originally Posted by grumpy View Post
    What experience and resource do you have available? There's certainly no
    guarantee that assembling wonderful, individual components will have a
    wonderful, combined result. As Heather mentioned, starting from a known
    product and modifying to taste -can- be a shorter path to a satisfying end.

    Giant, loud, blow your ears out, JBL-based boxes are an attainable given.

    The 2395/2441's over a pair of 2235's would be interesting, certainly from
    a visual standpoint.

    The 2404's might spray too wide, depending on your room, to match the
    midrange, but ok. .. where do you want to go and how much weight can you
    pull on the project? Measurement equipment? Crossover design experience?
    Assembly skills? ...
    Excellent questions.

    I would certianly like to pursue a DIY project that has already proven sucessful.
    I unfortunately do not have testing equipment. I know this does not mean a whole lot, but if I have general plans or guidelines (enclosure volume, port lenght, etc.) - I can certainly do the construction.

    I was really hoping member can share their experience with the aforemetioned equipment - and suggest which way has proven sucessful results.

    I have someone interest in purchasing my 2395s - If I decide to sell to him, he is willing to sell me the following gear: 2 pairs (4 woofers) of 2235 (freshly reconed) + a pair of 2405 + smith horns + potentially 2122H (<-for which he is asking an arm and a leg). Ofcouse, I would also be handing over some cash in addition to my 2395 as well.

    If I go forward with the above transaction, I will have the following components at my leasure:

    1 - pair smith horns
    2 - pairs 2441 drivers
    2 - paris 2235H driver
    1 - pari 2405 (alino)
    1 - pair of 2404H
    1 - pair of 2122H drivers

    (hopefully that is).

  5. #5
    Senior Member jerry_rig's Avatar
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    Sounds like you're covered!

  6. #6
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    Here's one idea for you ;



    - These are ( or at least were ) John Ws' main speakers . John stated that they imaged quite well .

    - The 2435H could be substituted by your 2441s / working behind either a 2311 ( & 2308 lens ) or Selenium round exponential horn ( with maybe the L94 lens ) or ( perhaps ) a set of nice wood horns purchased from John .

    - Components were as follows ;

    LF = 2245H
    MF = 2202H

    ( IME, you'll want a 12" midbass as dynamic as this model, to "voice" or properly balance up with the 2441 / the 2123H could work / though the 2122H doesn't quite have the numbers ( from what I calculate, to keep up to a 2441 )

    HF = 2435H on a custom horn ( "turned" on a lathe by John )
    UHF = 2407H on a custom horn ( "turned" on a lathe by John )



    >< cheers

    ps ; here's the Selenium Horn, available from P.E.

  7. #7
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    Quote Originally Posted by Earl K View Post
    the 2123H could work / though the 2122H doesn't quite have the numbers ( from what I calculate, to keep up to a 2441 )
    Both the 2122H and 2123H work fine with the 2421/2441 and 2425/2445.

  8. #8
    Senior Member Woody Banks's Avatar
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    You may want to consider a vertical design and shoot for a smaller footprint than the 4355. Check out the PROJECT MAY for example.
    I used the 4355 plans and incorporated the Smith horn with a pair of 2441's.
    The only driver that is not standard is the 12" mid woofer. I decided to use the ME120HS instead of the 2202 for several reasons. The crossovers were built using the design posted by Giskard.
    These monsters have been setting collecting dust for the past year and a half. I tried a couple of days ago to lift them up onto a pedestal in order to match a window seat. They were way too heavy for two people to handle. The large wooden horns and pile of heavy drivers added up to a ludicrous weight.
    I finally powered them up last night for the first time but discovered that my ebay Ashly crossover is not functioning. I am currently running the top halves on a small Bryston amp and find the results very pleasing.
    The costs to put these together add up very quickly. To replace the drivers, horns and crossovers would cost $3600~$4000.

    Good luck on the project!

    Woody
    Attached Images Attached Images  

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    Quote Originally Posted by dkalsi View Post
    Excellent questions.

    I would certianly like to pursue a DIY project that has already proven sucessful.
    I unfortunately do not have testing equipment. I know this does not mean a whole lot, but if I have general plans or guidelines (enclosure volume, port lenght, etc.) - I can certainly do the construction.

    I was really hoping member can share their experience with the aforemetioned equipment - and suggest which way has proven sucessful results.

    I have someone interest in purchasing my 2395s - If I decide to sell to him, he is willing to sell me the following gear: 2 pairs (4 woofers) of 2235 (freshly reconed) + a pair of 2405 + smith horns + potentially 2122H (<-for which he is asking an arm and a leg). Ofcouse, I would also be handing over some cash in addition to my 2395 as well.

    If I go forward with the above transaction, I will have the following components at my leasure:

    1 - pair smith horns
    2 - pairs 2441 drivers
    2 - paris 2235H driver
    1 - pari 2405 (alino)
    1 - pair of 2404H
    1 - pair of 2122H drivers

    (hopefully that is).
    Hi see my avatar?
    300L box; 2x2235,1x2441,1 x2397, 1x2405,1x3106 xover-pretty darn good imo!
    Cooky

  10. #10
    Heather [Senorita member] hjames's Avatar
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    Quote Originally Posted by dkalsi View Post
    Excellent questions.
    I have someone interest in purchasing my 2395s -

    If I go forward with the above transaction, I will have the following components at my leasure:

    1 - pair smith horns
    2 - pairs 2441 drivers
    2 - paris 2235H driver
    1 - pari 2405 (alnico)
    1 - pair of 2404H
    1 - pair of 2122H drivers

    (hopefully that is).
    Okay, the obvious choice is the 4343/4344 4-way JBL Monitors (with current recommended replacement parts). They consist of

    2235H
    2122H
    2425H
    2405H

    You have Alnico version of the 2405 slot tweeter, and 2 inch mid horn 2441 (and smith horns!)
    instead of the original 2425 (with 2307 horn), but you are darned close if you want to go that route ...
    2ch: Oppo, JoLida 502CRC, JBL L212, 18ti,240ti; Heath AS101, Von Schweikert VR4
    7.1: Oppo BDP103D, B&K, UREI 809A, JBL B460

  11. #11
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    Guys, quick question:
    What do you think is a fair price for the following (Feel free to give ranges). I tried guessing)

    2-Pairs of 2235H ($450/pair??)
    1 - Pair of 2122H ($450??)
    1 - Pair of 2405 ($300??)
    1 - Pair of Smith Horns ($380??) - based on last pair sold on e-bay with adapters)

  12. #12
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    Quote Originally Posted by cooky1257 View Post
    Hi see my avatar?
    300L box; 2x2235,1x2441,1 x2397, 1x2405,1x3106 xover-pretty darn good imo!
    Cooky
    Can you please specify how low are you crossing the 2441+2397?

    Do you feel that you need a mid-bass driver?

  13. #13
    Heather [Senorita member] hjames's Avatar
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    Quote Originally Posted by dkalsi View Post
    Guys, quick question:
    What do you think is a fair price for the following (Feel free to give ranges). I tried guessing)

    2 - Pairs of 2235H ($450/pair??)
    1 - Pair of 2122H ($450??)
    1 - Pair of 2405 ($300??)
    1 - Pair of Smith Horns ($380??) - based on last pair sold on e-bay with adapters)
    I paid $500 last year for a pair of 2123 cores reconed for me as 2122s ...
    The real question for these speakers is condition - if they are just old drivers laying around,
    their value is much less than freshly reconed or rediaphramed (JBL parts only, please!)

    Are the Smith horns actual JBL model 2397 in clean shape with 2" adapters?
    2ch: Oppo, JoLida 502CRC, JBL L212, 18ti,240ti; Heath AS101, Von Schweikert VR4
    7.1: Oppo BDP103D, B&K, UREI 809A, JBL B460

  14. #14
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    Quote Originally Posted by dkalsi View Post
    Can you please specify how low are you crossing the 2441+2397?

    Do you feel that you need a mid-bass driver?
    Hi, the design is based on the Westlake TM1, xover is 2nd order @ 800 and 8,500hz. The 4350 is legendary and uses a mid to great effect and is better than the TM1 in this regard.

  15. #15
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    Quote Originally Posted by hjames View Post
    I paid $500 last year for a pair of 2123 cores reconed for me as 2122s ...
    The real question for these speakers is condition - if they are just old drivers laying around,
    their value is much less than freshly reconed or rediaphramed (JBL parts only, please!)

    Are the Smith horns actual JBL model 2397 in clean shape with 2" adapters?

    The 2122 would be reconed is the seller is able to bye the recones from JBL - He mentioned that he is not 100% sure that JBL would still have them even though they are listed on their parts website.

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