Eminence American Standard Beta 12A 12 Inch Speaker 250 Watts 8 Ohm

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    Product Description

    The Eminence Beta 12A Speaker features optimized frequency response and power handling for use as a replacement speaker for two and three way speakers systems, bass and keyboard combo amps, guitar combo amps, and stage monitors. 8 ohms, 500W Program.

    Performance optimized for sound reinforcement systems. Also suitable for lead and bass guitar, keyboards, guitar combos, club music systems and stage monitors.

    Materials of Construction

    • Kapton coil former
    • Ferrite magnet
    • Pressed steel basket
    • Polyamide-imide coated copper voice coil
    • Paper cone/cloth cone edge
    • Solid composition paper dust cap

    Product Specifications


    • Nominal Basket Diameter: 12 inches, 304.8mm
    • Impedance: 8 Ohms
    • Power Rating:
      • Music Program: 500 W
      • Watts: 250 W
    • Resonance: 50Hz
    • Usable Frequency Range: 43Hz - 3.8kHz
    • Average Sensitivity 1W @ 1m: 100 dB
    • Magnet Weight: 34oz.
    • Gap Height: 0.312 inches, 7.94mm
    • Voice Coil Diameter: 2 inches, 50.8mm

    Mounting Information

    • Overall Diameter: 12.02 inches, 305.2mm
    • Baffle Hole Diameter: 10.97 inches, 278.6mm
    • Front Sealing Gasket: fitted as standard
    • Rear Sealing Gasket: fitted as standard
    • Mounting Holes Diameter: 0.25 inches, 6.4mm
    • Mounting Hole B.C.D.: 11.63 inches, 295.3mm
    • Depth: 4.47 inches, 113.5mm
    • Shipping Weight: 9.2 lbs., 4.2 kg

    Thiele-Small Parameters

    • Resonant Frequency: 50Hz
    • Impedance (RE): 7.07 ohm
    • Coil Inductance (Le): 0.84mH
    • Electromagnetic Q (Qes): 0.57
    • Mechanical Q (Qms): 5.82
    • Total Q (Qts): 0.52
    • Compliance Equivalent Volume (Vas): 114.7 liters, 4.05 cu.ft.
    • Peak Diaphragm Displacement Volume (Vd): 42cc
    • Mechanical Compliance of suspension (Cms): 0.29mm/N
    • BL Product (BL): 11.6 T-M
    • Diaphragm Mass inc. Airload (Mms): 35 grams
    • Equiv. Resistance of mechanical suspension loss (Rms): 1.88N*sec/M
    • Efficiency Bandwidth Product (EBP): 88
    • Voice Coil Overhang (Xmax): 0.8mm
    • Surface Area of Cone (Sd): 532.4cm2
    • Impedance at Resonance (Zmax): 79 ohm

    Helpful Info about the Manufacturer
    Phone:  502-845-5622 Warranty:  Warranty: 7 years
    HHansen from R.I.
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    With 250 watts per speaker your covered for most any amp when used in tandum.
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