Eminence Beta 12 CX

BETA-12CX American Standard Series

 

Recommended for professional audio as a mid-bass in either vented, or sealed satellite or floor monitor
enclosures. Also works nicely in vented two-way enclosures used for small coverage areas.

 

SPECIFICATION

 

    * Nominal Basket Diameter 12", 304.8 mm
    * Nominal Impedance 8 ohms
    * Power Rating Watts 250 W / Music Program 500 W
    * Resonance 43 Hz
    * Usable Frequency Range 66 Hz - 20 kHz
    * Sensitivity 96.7
    * Magnet Weight 38 oz.
    * Gap Height 0.312", 7.92 mm
    * Voice Coil Diameter 2", 50.8 mm

 

THIELE & Small Parameters

 

    * Resonant Frequency (fs) 43 Hz
    * DC Resistance (Re) 5.57
    * Coil Inductance (Le) 1.01 mH
    * Mechanical Q (Qms) 6.69
    * Electromagnetic Q (Qes) 0.51
    * Total Q (Qts) 0.48
    * Compliance Equivalent Volume (Vas) 161 liters / 5.7 cu. ft.
    * Peak Diaphragm Displacement Volume (Vd) 186 cc
    * Mechanical Compliance of Suspension (Cms) 0.40 mm/N
    * BL Product (BL) 10.0 T-M
    * Diaphragm Mass inc. Airload (Mms) 34 grams
    * Efficiency Bandwidth Product (EBP) 84
    * Maximum Linear Excursion (Xmax) 3.5 mm
    * Surface Area of Cone (Sd) 532.4 cm²
    * Maximum Mechanical Limit (Xlim) 10.4 mm

 

MOUNTING Information

 

    * Recommended Enclosure Volume
      Sealed 42.5-28 liters/1-1.5 cu.ft.
      Vented 37-71 liters/1.3-2.5 cu.ft.
    * Overall Diameter 12.03", 305.5 mm
    * Baffle Hole Diameter 10.95", 278.1 mm
    * Front Sealing Gasket fitted as standard
    * Rear Sealing Gasket fitted as standard
    * Mounting Holes Diameter 0.25", 6.4 mm
    * Mounting Holes B.C.D. 11.59", 294.3 mm
    * Depth 4.47", 114 mm

 

MATERIALS of Construction

 

    * Copper voice coil
    * Polyimide former
    * Ferrite magnet
    * Extended core
    * Pressed steel basket
    * Paper Cone
    * Cloth cone edge
    * Screened cloth dust cap