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Thread: JBL 2245 Ideal enclosure

  1. #1
    Senior Member Niklas Nord's Avatar
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    JBL 2245 Ideal enclosure

    I have been reading the enclosure guide for
    the JBL 2245.

    Does everyne follow this guide? It doesent
    seem to go as low as i want it to go.

    What is the ideal design if i want it to be down
    to 14 - 16hz

    maybe lower the FS of the driver in some way?

    CORNER placemement
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  2. #2
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    You aren't taking into account natural room EQ. Read about it on the Internet. Buy some books. Know the room you're building your system for.

    The 2245H doesn't respond real well to corner placement. Use single 2242H's instead if you're planning on doing that. Try sealed first and then ported and see which yields the prefered response.

    How do you know it doesn't go as low as you want? You have some previous experience with it?

    Perhaps you need to look at running the 2245H in a B6 alignment. Put it in 8.0 to 10.0 cubic feet, tuned to 20 Hz and then apply a 20 Hz auxilary filter with Q of 2.
    Last edited by 4313B; 04-29-2003 at 05:19 AM.

  3. #3
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    Question 2245H

    Hi Giskard Is that what JBL did with the B460 Sub and BX63A crossover???

  4. #4
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    No, the B460 is a B5 alignment with an auxilary filter at 26 Hz with a Q of 2.

  5. #5
    Senior Member jblwolf's Avatar
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    I found this in a old ATTEAN catalog if this helps-WOLF
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  6. #6
    Senior Member Niklas Nord's Avatar
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    Now i have two 2245 baskets !!

    yiiippiiiieieii
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  7. #7
    Senior Member Niklas Nord's Avatar
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    And there may be 2 more 2245..
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  8. #8
    Senior Member Ralf's Avatar
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    Thumbs up

    Originally posted by Niklas Nord
    And there may be 2 more 2245..
    Where you get FOUR 2245H? In Germany there is no way to get it. :-(
    16 Hz can not be substituted

  9. #9
    Senior Member Niklas Nord's Avatar
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    '

    Whell you can use 2240 and e-155 baskets as well
    then recone
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  10. #10
    Senior Member Ralf's Avatar
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    Originally posted by Niklas Nord
    '

    Whell you can use 2240 and e-155 baskets as well
    then recone
    Yea! That`s the way :-)
    16 Hz can not be substituted

  11. #11
    Senior Member Niklas Nord's Avatar
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    oh yes

    There are always several ways you know
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  12. #12
    Senior Member Niklas Nord's Avatar
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    I learned by Giskard, the jedi knight master of JBL reinforcement
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  13. #13
    Senior Member Ralf's Avatar
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    Originally posted by Niklas Nord
    I learned by Giskard, the jedi knight master of JBL reinforcement
    That`s realy right.

    Hey Niklas, I have seen 3 2245 and one 2240 on ebay. What is a good price for a recone needed 2245/2240 in EUR?
    16 Hz can not be substituted

  14. #14
    Senior Member Niklas Nord's Avatar
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    Well, here in sweden they cost cirka 280 euro for a recone
    to 2245 ...

    EXPENSIVE WARNING
    Best Regards
    .Niklas Nord, Stockholm Sweden
    Proud owner of the Project K2 s9500 system

  15. #15
    Senior Member Ralf's Avatar
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    Lightbulb Field Service Manual

    Today I found some Informations about enclosures with 2245H. These are from JBL`s "Field Service Manual" from 198x. I got it from a local JBL-Dealer. Next time I will get it to scan it completely...

    I'm surprised. That`s nearly the same result as I have calculated here:

    Vented Box for 18"
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    16 Hz can not be substituted

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