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  1. Who is looking after the Technical reference forum?

    I would like to upload some missing tech manuals and other JBL info.
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    Most recent phone cameras have created an EXIF...

    Most recent phone cameras have created an EXIF file with photos that note photo orientation. Some phones and all older photo software does not read the files so just display the photo as stored. To...
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    Thankyou Earl. Aftermarket sources appear to...

    Thankyou Earl. Aftermarket sources appear to emulate the 3rd version. 22 rib, black aquaplas back, black/grey foam roll. And I have 5's I guess. How to match? Does anyone out there have JBL kits with...
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    JBL 2245 cone ribs

    My original 2245H cines have 17 stiffening ribs as does my JBL recone kit. Cannot find oem kits anymore and need at least one more. Looking at aftermarket 2245 recone kits but they all have 22 ribs....
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    Closed cell does not absorb water. It is used for...

    Closed cell does not absorb water. It is used for patio furniture cushions among other uses that water absorption would not be acceptable.
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    That foam looks pretty stiff. I think the...

    That foam looks pretty stiff. I think the original is a polyurethane closed-cell foam, usually dark grey/green about 10mm. There is some discussion of open or porous cell vs closed or impermeable....
  7. Thread: Change of plans

    by remusr
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    Steve, the link is to 2way 4331A cabinets not...

    Steve, the link is to 2way 4331A cabinets not 4430 referred to. Mind you, the 4331 or similar 3way 4333 cabinet is what you want - 2235, 2425/2312/2308, 2405 3 way.
  8. Thread: 2420 foam

    by remusr
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    You can get the foam at any foam shop. Sticky one...

    You can get the foam at any foam shop. Sticky one side, 10mm, closed cell. Pretty cheap, maybe $10 for 3ft square. Cut to size including screw notches, clean off old with alcohol and stick on.
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    A riskier alternative is the Bissel Little Green...

    A riskier alternative is the Bissel Little Green Machine, a small vacuum with a built-in Bissel liquid sprayer. Vacuum dry then lightly spray with the wand sprayer and gently vacuum dry. Abort...
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    I have heard that you must use a water base...

    I have heard that you must use a water base solution to remove a water stain. Makes some sense. The suggested solution was distilled water with a bit of isopropyl alcohol and Dawn dish soap. Lightly...
  11. LE85 is heritage era. Negative polarity.

    LE85 is heritage era. Negative polarity.
  12. Right on the walnut. I have been doing too much...

    Right on the walnut. I have been doing too much oakwork.
  13. Great the grilles are still ok. Way I look at it...

    Great the grilles are still ok. Way I look at it you probably could live with a repair that is not obvious.
    Easiest is to remove grilles, patch with plastic wood, sand, tidy up a bit and stain with...
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    Probably $15k USD plus shipping for a pair of...

    Probably $15k USD plus shipping for a pair of originals in perfect shape. Slightly more with spare grilles in alternate color.
    Theoretically that is. If they were for sale. Hey, should this thread...
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    Biggest difference between the two is dispersion...

    Biggest difference between the two is dispersion pattern I believe. Potatoe masher conical dispersion pattern may be more amenable to sound reinforcement use than residential hifi use.
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    Usually just a concentric nut on the shaft. Pot...

    Usually just a concentric nut on the shaft. Pot mounted from back of mounting plate, securing nut on front followed by the knob. Mounting plate "may" be screwed to rear of baffle and that could get...
  17. I have encountered an Internet phenomena -...

    I have encountered an Internet phenomena - controversial nonsense discussion with no intent to confirm suggested solutions. Pure mindless entertainment for some. Timewaster for others. Could this...
  18. Is it possible they are now connected out of...

    Is it possible they are now connected out of phase?
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    I believe it has been posted before. I recall...

    I believe it has been posted before. I recall doing it with s different extension to get by the attachment restriction. Download and alter the extension to xls and viola.Will look for post.
  20. I believe you can make a H-1 by installing a 075...

    I believe you can make a H-1 by installing a 075 or 2402 dia in any 2404. I may have an original H-1 but just moved so everything is boxed up. Somewhere!
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    Edgewound also does recones....

    Edgewound also does recones....
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    The correct sticky back closed cell foam is easy...

    The correct sticky back closed cell foam is easy to get. Google it for your area. I got a 4x4 sheet for $15 or so.
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    Half inch. But anything is better than original...

    Half inch. But anything is better than original melting foam now!
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    I would consider again the tired spider issue. I...

    I would consider again the tired spider issue. I had a somewhat analagous situation with 4 2245's formerly used in a church for sound reinforcement. Foams appeared as new but mrasured fs = 14-15Hz...
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    Do you mean 4350?

    Do you mean 4350?
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