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    The info you seek ( for the JBL 2234H ) is ...

    The info you seek ( for the JBL 2234H ) is found in the Transducer Section of this web-site ( under 2235H > since the two models share the same coil ).

    Getting Gauss 4583 will be tougher >...
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    I believe LHF members sebackman (& maybe POS )...

    I believe LHF members sebackman (& maybe POS ) have the most experience to offer on that subject.

    :)
  3. I'm very confident that one can make either an...

    I'm very confident that one can make either an Altec 802 ( type ) or JBL 2425 ( type ) diaphragm fit this Dukane driver ( I do own a single example of the 5a540 with a working Dukane diaphragm ).
    ...
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    You got that right! Those wanting a 12"...

    You got that right!

    Those wanting a 12" version of 2216nd have only to modify the 2262H ( in the same way the 2265H was modified into a 2216nd ) .

    :)
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    I think your pictures show a legit L56 that...

    I think your pictures show a legit L56 that someone hacked into ( at the back terminal plate ).

    I know many complain about the terminal types that JBL used back then ( & how access is restricted...
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    Your aftermarket recone kits came from Sound...

    Your aftermarket recone kits came from Sound Speaker Repair ( if I remember correctly ), therefore its best to ask them about glue questions like this.

    Alternately, ask GordonW ( through a private...
  7. Thread: Project Widget

    by Earl K
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    Great Project Widget! I love the look! ...

    Great Project Widget!

    I love the look!

    http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=84931&stc=1&d=1567396816

    :)
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    Thanks Rob ( +4313B ). :)

    Thanks Rob ( +4313B ).

    :)
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    Rob, Do you have private intel that the...

    Rob,

    Do you have private intel that the 2216nd-1 has around 15-30 grams more MMS than the 2216nd ?

    If so, please share.

    :)
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    Thanks for your testimonial John. I follow...

    Thanks for your testimonial John. I follow all the comments ( over at AK ) praising this upgrade.

    I'm sure I would like that woofer since I value clarity over out-right ULF extension.

    I...
  11. Poll: Those worldwide hifiShark values would indicate...

    Those worldwide hifiShark values would indicate to me that the seller has already reasonably priced his 240's at around $700.00 if I remember correctly ( even with 104H-2 substitutes ).

    :)

    PS;...
  12. Poll: ;) Road trips this time of year can certainly...

    ;)

    Road trips this time of year can certainly be a lot of fun.

    Quebec City is a beautiful place to visit in summer.

    But "I get it" if someone can't or prefers not to travel for whatever...
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    I like AudioTool quite a lot ( for Android ). ...

    I like AudioTool quite a lot ( for Android ).

    84727

    Importantly, it allows the usage of an external mic plugged into your Android phone ( and the loading of a calibration file > if available...
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    Some Guesses? (i) The bias control on either...

    Some Guesses?

    (i) The bias control on either A or B ( or both ) channels may need adjusting.

    (ii) Also, something may have gone "kaflooey" ( a highly technical term ;) ) within the negative...
  15. Thread: 4345 Clones

    by Earl K
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    Nice! I'm glad those 2311's are going to good...

    Nice! I'm glad those 2311's are going to good use. I like the usage of the L94 lens.

    :)
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    Peaking at 85db ( C weighted ) is around my limit...

    Peaking at 85db ( C weighted ) is around my limit for home listening.

    I normally listen in the low to mid 70's.


    Frequency (Noise) Weightings

    :)
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    Derek, I like the advisement to try another...

    Derek,

    I like the advisement to try another amp.

    I'm in Pro Sound, always use pro grade amps here at home ( QSC & Bryston ) so have a hard time relating to "soft-circuit" mush caused by...
  18. Thread: 4345 Clones

    by Earl K
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    Very Nice Robert! :)

    Very Nice Robert!

    :)
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    I think most of your problems Derek with those...

    I think most of your problems Derek with those L150's woofers ( as well as desire to tinker with the other components ) stem from having unrealistic expectations ( level wise ) as to what HiFi...
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    The following is the recone I would consider...

    The following is the recone I would consider using ( assuming an original from JBL can't be sourced ).

    (Click the pic for the link)
    ...
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    Derek had full recones ( aftermarket I believe )...

    Derek had full recones ( aftermarket I believe ) done to his 128's .

    I'll assume the reconer was hip enough to her job to clean the gap as well as remove any crumbling foam from the center...
  22. Poll: You know Derek, I voted that you ( eventually )...

    You know Derek, I voted that you ( eventually ) sell those 150's and instead pursue making up some L220's ( on steroids ) .

    Here are the boxes to start you off ( available at a very low price...
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    Another ( so-called ) 800hz option is to use the...

    Another ( so-called ) 800hz option is to use the N800F network ( it's quite applicable for those older components of yours ).
    ...
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    When designing crossovers it's generally...

    When designing crossovers it's generally advisable to use ( create ) a constant impedance ( if at all possible ) .

    The variable Lpad will give you that.

    The older Altec diaphragms ( ie; 20275...
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    Thanks Rob! In reality I can't determine if...

    Thanks Rob!

    In reality I can't determine if what you have is aquaplas or not without an actual hands-on with that cone.

    What do you think it is?

    As Mac pointed out, the back of these...
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