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Thread: Need DIY Suggestion

  1. #1
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    Need DIY Suggestion

    I have some really nice Wharfedale W70D cabinets that I'd like to use for an altec project. The internal volume of these are 2.5 cubic feet, and they're fairly shallow, only about 10" deep. I like bass you can feel, so any suggestions would be welcome. I've knocked out the front baffles, so I'm starting with a clean slate. Thanks

  2. #2
    Dang. Amateur speakerdave's Avatar
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    Is this a full-range speaker system or subwoofer?

    What is your budget?

    David

  3. #3
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    Quote Originally Posted by tbcblues
    I have some really nice Wharfedale W70D cabinets that I'd like to use for an altec project.
    - Run some alignment sims of different JBL & Altec woofers ( there's free software available online ) and you'll soon discover that Altec woofers typically have too high a "VAS" value to work well in that size cabinet .

    - JBL woofers typically have heavier cones / & increased motor strength ( to move the heavier cones ) and ( as a consequence ) dramatically lower "VAS" values . They'll be your best choice / from the Lansing family .

    - 2.5 cu ft works well enough for some JBL hif woofers ( like the 12", model 122a or the 128H series of older woofers that used 3" voice-coils ) .
    - That size box can also shoe-horn in the 14", le14 varietal with decent enough results ( though 3.5 cu' is a better size ) .


  4. #4
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    another question

    would an 8" coaxial-type speaker work well? If so, would the baffle need to be ported/vented?
    Attached Images Attached Images  

  5. #5
    Administrator Mr. Widget's Avatar
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    Quote Originally Posted by tbcblues View Post
    I like bass you can feel...
    Quote Originally Posted by tbcblues View Post
    would an 8" coaxial-type speaker work well?
    No.


    Widget

  6. #6
    Senior Member 57BELAIRE's Avatar
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    Get a pair of LE14's if you want that chest-thumping bass from a bookshelf sized enclosure.

    Your boxes (sand-filled?) are the approx. size of S99's (24 x 14 x 12)
    and the x-over cutout looks the right size for a LX4-1.

    Even better, try a pair of LE14C composites with the built in LE20...
    one less baffle hole to cut.

    Then when you're ready to plot port size any number of forum members
    can help you with that
    OPUS POCUS

  7. #7
    RIP 2011 Zilch's Avatar
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    Quote Originally Posted by 57BELAIRE View Post
    Get a pair of LE14's if you want that chest-thumping bass from a bookshelf sized enclosure.
    Yes. Mate with $10 PT waveguide and compression driver, BMS.

    Quote Originally Posted by 57BELAIRE View Post
    Even better, try a pair of LE14C composites with the built in LE20....
    Nope, they rather suck, actually....

    ******

    Example LE14/PT waveguide project:

    http://audioheritage.org/vbulletin/s...ad.php?t=17408

    http://audioheritage.org/vbulletin/s...ad.php?t=18168

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