Eminence designed enclosures for the Alpha 8a?

Discussion in 'Amps [BG]' started by jallenbass, Mar 5, 2014.


  1. jallenbass

    jallenbass Supporting Member

    Joined:
    May 17, 2005
    Location:
    Bend, Oregon
  2. JimmyM

    JimmyM Supporting Member

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    Apr 11, 2005
    Location:
    Apopka, FL
    Disclosures:
    Endorsing: Ampeg Amps, EMG Pickups
    Copy the BA108.
     
  3. jallenbass

    jallenbass Supporting Member

    Joined:
    May 17, 2005
    Location:
    Bend, Oregon
    Want to give me the port size? :)
     
  4. JimmyM

    JimmyM Supporting Member

    Joined:
    Apr 11, 2005
    Location:
    Apopka, FL
    Disclosures:
    Endorsing: Ampeg Amps, EMG Pickups
    You know I do!

    One port, 2 7/8" dia. with a 3" tube.
     
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  6. jallenbass

    jallenbass Supporting Member

    Joined:
    May 17, 2005
    Location:
    Bend, Oregon
    Thanks Jimmy. You're OK.
     
  7. AstroSonic

    AstroSonic Supporting Member

    Joined:
    Dec 10, 2009
    Location:
    rural New Mexico
    Use the Eminence Medium Vented Enclosure: 0.85 cf internal volume, tune to 60 Hz with a 3 inch ID tube (cardboard or pvc) that is 3 1/2 inches long. It's pretty similar to the Ampeg BA-108 design (0.68 cf, Fb=72Hz) suggested by JimmyM. Both yield similar results with this driver, although the Eminence design is marginally better for this driver. Either way, power handling will be limited to around 60w by cone excursion.
     

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