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Eminence Beta-12CX 12" Coaxial Driver

Brand:|Model: Beta-12CX|Part # 290-504

The Eminence Beta-12CX coaxial 12" speaker offers the coherency of a point source, while providing a form factor that requires minimal baffle space.
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Part # 290-504
  • 1-3/8"-18 TPI mount is compatable with many popular horn drivers
  • Polyamide-imide coated copper voice coil with Kapton former
  • Perfect for creating ultra compact monitors
  • Point source design delivers equal off axis response in all directions

Product Details

Eminence Beta-12CX 12" Coaxial Driver

The Eminence Beta-12CX 12" Coaxial Driver is recommended for professional audio midrange reproduction in sealed loudspeaker enclosures. Also suitable for midbass or floor monitor applications in vented 2-way speaker cabinets. The Beta-12CX's coaxial design facilitates use of an HF driver to extend frequency response. Standard 1-3/8"-18 TPI threaded insert for HF horn driver (sold separately). Made in the USA. 7-year manufacturer's warranty!

Featured in Eminence's "Using coaxial products for DIY monitors and home hi-fi applications" article.

Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)250 Watts
  • Power Handling (max)500 Watts
  • Impedance8 ohms
  • Frequency Response57 to 4,600 Hz
  • Sensitivity97.3 dB 1W/1m
  • Voice Coil Diameter2"
  • Magnet Weight38 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)47 Hz
  • DC Resistance (Re)5.42 ohms
  • Voice Coil Inductance (Le)0.64 mH
  • Mechanical Q (Qms)5.64
  • Electromagnetic Q (Qes)0.52
  • Total Q (Qts)0.48
  • Compliance Equivalent Volume (Vas)4.27 ft.³
  • Mechanical Compliance of Suspension (Cms)0.30 mm/N
  • BL Product (BL)10.79 Tm
  • Diaphragm Mass Inc. Airload (Mms)38g
  • Maximum Linear Excursion (Xmax)3.5 mm
  • Surface Area of Cone (Sd)538.9 cm²
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialCloth
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12.03"
  • Baffle Cutout Diameter10.95"
  • Depth4.47"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume2.4 ft.³
  • Sealed F377 Hz
  • Vented Volume8.05 ft.³
  • Vented F340 Hz
Eminence Beta-12CX 12" Coaxial Driver
  • BrandEminence Speaker
  • ModelBeta-12CX
  • Part Number290-504
  • UPC876358000135
  • Product CategoryPro Woofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (3 Reviews)
  • Weight10.03 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Eminence Beta-12CX 12" Coaxial Driver

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