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Thread: loudspeaker cabinet 212-8A

  1. #1
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    loudspeaker cabinet 212-8A

    Hello
    Has anyone a drawing for a loudspeaker cabinet ? A loudspeaker cabinet for my speakers 212-8A.
    The PDF is in the annex.

    Sorry for my English

    Best Regards
    aloa5
    Attached Images Attached Images

  2. #2
    Senior Member stephane RAME's Avatar
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    Club double 16"
    "Laissez les Bons Temps Rouler"

  3. #3
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    Hey,

    thank you for the links.

    Is it possible, to make a Onken cabinet for this driver.
    Here is a link for a drawing.
    http://nicolas.davidenko.perso.sfr.f...lancaisse.html

    Can I take one of this 3 drawings ?

    Best Regards
    Xmedia

  4. #4
    Senior Member stephane RAME's Avatar
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    Hi,
    If the parameters of the GPA 212-8A are the same as those of the ALTEC 414, can have a try with "petite Onken"

    http://www.asrr.org/biblioteca/Revue...KEN/ONKEN.html

    Stéphane
    Club double 16"
    "Laissez les Bons Temps Rouler"

  5. #5
    Senior Member CONVERGENCE's Avatar
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    Quote Originally Posted by aloa5 View Post
    Hello
    Has anyone a drawing for a loudspeaker cabinet ? A loudspeaker cabinet for my speakers 212-8A.
    The PDF is in the annex.

    Sorry for my English

    Best Regards
    aloa5
    Here is the original cabinet designed for this speaker.
    Attached Images Attached Images

  6. #6
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    @stephan

    Hello
    from where you have the data for the speakers 414 ?
    I think nowhere the same values between the 2 speakers.

    @convergence
    Thank you for the link, but my favorite cabinet is a onken.


    Best Regards
    aloa5

  7. #7
    Senior Member stephane RAME's Avatar
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    Hi,
    The data for the speakers 414

    http://www.greatplainsaudio.com/altec_thiele_small.html

    Thiele-Small Parameters


    Model Number: Gpa 212-8A
    Free Air resonance (Fs): 51.2 Hz
    Equivalent Volume
    Compliance (VAS): 3.76 ft.3 (106.4 l)
    Total Q (QTS): 0.46
    Electrical Q (QES): 0.48
    Mechanical Q (QMS): 10.57
    Reference
    Efficiency (ηO): 2.89%
    D.C. Resistance (RE): 5.83 ohms
    Peak Linear
    Displacement (XMAX): 0.12 in. (3 mm)
    Peak Linear Volume
    Displacement (VD): 9.8 in.3 (0.16 l)
    Effective
    Piston Area (SD): 81.7 in.2 (527.1 cm2)


    Model Number: ALTEC 414-8C
    Xmax (inch) 0.15
    Re (ohms) 6.70

    Vd (cu. in.) 11.80
    Fs (Hz) 30.20
    Vas (cu. ft.) 8.13
    Ref (%) 2.90
    Qts 0.21

    Qms 7.40
    Qes 0.21
    Vid 0.15



    Stéphane
    Club double 16"
    "Laissez les Bons Temps Rouler"

  8. #8
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    hey stephan

    But there are not the same specification, are you sure, that the petit onken cabinet is matching ?

    Best Regards
    aloa5

  9. #9
    Senior Member stephane RAME's Avatar
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    Hi,
    No, it should be adapted to the new settings.

    Stéphane
    Club double 16"
    "Laissez les Bons Temps Rouler"

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