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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...
  4. 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;...
  5. 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...
  8. 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...
  11. 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...
  15. 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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    Why not use a 16 ohm variable Lpad for...

    Why not use a 16 ohm variable Lpad for attenuation ?( for instance one from Parts Express found in the clickable picture link )
    - Use in place of all fixed value resistors ( between crossover...
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    Thanks Rob! So the original 128H was painted...

    Thanks Rob!

    So the original 128H was painted in white aquaplas ( according to this blurb ).

    http://www.lansingheritage.org/images/jbl/specs/home-speakers/1979-l150/page3.jpg

    And the original...
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    Derek, Color me confused here. I thought...

    Derek,

    Color me confused here.

    I thought you were getting ( from your preferred reconer ) bona-fide JBL recone kits.

    Is that not the case? ( Price wise, were they inline with a costing...
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    Hi There + Welcome! Adding a dedicated bass...

    Hi There + Welcome!

    Adding a dedicated bass driver to the 604 would be a good idea.
    I believe it could be made to sound great. The 2240 would add some nice ( + missing ) weight to the bottom end...
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    Yes, the spider & surround both need to be...

    Yes, the spider & surround both need to be released from their glue points.

    I imagine ( since I've never lifted a complete cone out ) that a putty knife, Q-tips for targeted application of the...
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    Wow MoD! Very Impressive! Yes, I think...

    Wow MoD!

    Very Impressive!

    Yes, I think your 075 tweeters need to have installed some new ( 077 ) diaphragms .

    :)
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    Thanks for the pics Derek! ( plus the update on...

    Thanks for the pics Derek! ( plus the update on the cone painting mixture ).

    I you still have them ( I humbly suggest that you ) hold on to those cone assemblies ( that were lifted out as a single...
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