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  1. Replies
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    Thanks for info and ideas. If it is thread locked...

    Thanks for info and ideas. If it is thread locked maybe find a 6mm nut and put it on top of the bolt and weld in the hole. Maybe the heat will loosen the thread locker. Or maybe if I'm able to screw...
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    JBL 2447 broken threaded bolt

    One of my 2447 compression drivers have had one of it’s threaded bolts for fastening the horn taken a hit before my ownership. Unfortunately I could not resist the temptation to try to straighten it...
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    10,451

    Internal bracing, glue used by JBL?

    Hi I have four jbl 4645b, that I plan to inspect before putting them in to service. I startet with one of them, removed the driver and saw that the port tubs was not glued properly to the bracing...
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    Cabinet repair

    83764
    Hi, I have at last been able to get the JBL cinema speakers home after 4-5 years in storage.
    Before I start using them, I was planing to give them some cleaning and do some light cosmetic...
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    I have now removed the back cover and inspected...

    I have now removed the back cover and inspected the diaphragm. The diaphragm was easily removed and I could not see any damage to the voicecoil or diaphragm it self. Is there any special method of...
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    Ok, thank you: I will do the check later today or...

    Ok, thank you: I will do the check later today or tomorrow. On the compression drivers I have seen in the same series, it seems like JBL put rubber only on drivers for bigger horns like the 2446 used...
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    Ok, how whould you have checked it?

    Ok, how whould you have checked it?
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    7,581

    Damaged magnet on JBL 2447

    Hi, I have got my self three JBL 2447 with 2352 horns that I'm going to use together with low frequency system from 4675C.
    One of the 2447 fell from the 4675C low frequency cabinets during...
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