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Thread: Jbl 1501al

  1. #1
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    Jbl 1501al

    Dues anyone know the Thiele/Small parameters for 1501AL

    The 1501AL is 12 ohm and 1500AL is 8 ohm and the voice coil winding length is 30 mm for 1501AL but 20 mm for 1500AL.





    thanks
    Ari

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    I was told last week that the 1501AL is NLA so it probably doesn't matter.

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    Quote Originally Posted by 4313B View Post
    I was told last week that the 1501AL is NLA so it probably doesn't matter.

    If somone on the forum know about the Thiele/Small information for 1500AL
    I will be happy to get them.

    Giskard is dues not matter for me if you can not get any drivers from JBL!

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    Quote Originally Posted by hlaari View Post
    If somone on the forum know about the Thiele/Small information for 1500AL
    I will be happy to get them.

    Giskard is dues not matter for me if you can not get any drivers from JBL!
    The 1500AL is NLA too.

    I didn't bother to measure the Le of either driver. I guess I could if only for the sake of science when I have time.
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    Quote Originally Posted by 4313B View Post
    The 1500AL is NLA too.

    I didn't bother to measure the Le of either driver. I guess I could if only for the sake of science when I have time.

    Thank you for the information Giskard,
    sorry about I said at I dont care at you can not get any JBL drivers I was not going to be rude.



    Ari

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    impressive specs but.....

    Quote Originally Posted by 4313B View Post
    The 1500AL is NLA too.

    I didn't bother to measure the Le of either driver. I guess I could if only for the sake of science when I have time.
    http://www.focal.com/files/catalog-utopia-iii-gb.pdf

    in this pdf, Focal states they reached a BL of 34 Tm, i don;t know if this is a lie or not, but i just cannot believe the 1501AL(measured aprox 27 BL by Giskard) is inferior in this spec to the 16 inch focal woofer.

    can you come with arguments please?, there must be something rotten in focal specs (i only assume).

    i also want to say hi, as i am new from this day to this forum

  7. #7
    Senior Member timc's Avatar
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    Getting a high BL is not a problem. Just put a very long wire in the gap.

    You have to see alle the parameters together as a system.

    The Focal system is also an elctromagnet, and not a permanent magnet as used in the JBL.

    Edit: Here is a woofer that manages the same with a permanent magnet system: http://www.rcf.it/en_US/products/pre...ucers/lf15n451
    2213 + 2435HPL w/aquaplas + H9800 (Matsj edition)

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    Nice with all these specs. (-;
    can someone tell me What the difference is on the last 2 specs (1-W spl) (and 2.8-V spl)

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    Quote Originally Posted by Brian DK View Post



    Nice with all these specs. (-;
    can someone tell me What the difference is on the last 2 specs (1-W spl) (and 2.8-V spl)

    Really no one knows the meaning of the 2 specs? (-;

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    IIRC, the 2.83V/1M measurement is the same as 1W/1M only for 8 ohm speakers, where 1W/1M can be used for any speaker impedance. In other words, 2.83V into a 4 ohm speaker gives 2 watts, where 2.83V into an 8 ohm speaker gives one watt.

    Google is your friend here, it can come up with many more (and undoubtedly better) explanations:

    https://www.google.com/#q=1w+vs+2.83v+dB

  11. #11
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    Quote Originally Posted by 4313B View Post
    The 1500AL is NLA too.

    I didn't bother to measure the Le of either driver. I guess I could if only for the sake of science when I have time.



    The 1501 has a spl on 94.1db at 1W.
    There are two of them in DD66000 😋😋
    but the DD66000 "only" end up with at total sensetivity at 96db at 1W.
    how is that??

    I have always learned that double up on woofers is 6db increase.
    but that seemed not to be the case here.

    why?😳😁

    anyway.. I absolutte love that speaker.. 😛😛

  12. #12
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    Quote Originally Posted by Brian DK View Post
    I have always learned that double up on woofers is 6db increase.
    but that seemed not to be the case here.
    Actually adding an identical speaker gives you 3dB more output and 3dB more power handling so combined you have a potential 6dB of SPL increase... of course with woofers in close proximity you also gain from mutual coupling.

    At the end of the day sensitivity figures for a speaker are a little bit flexible. I would not sweat it.

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