Description
12" Coaxial Driver, 8 Ohm, 250 Watt
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. HF device sold separately. Made in the USA. 7-year manufacturer's warranty!
Features:
- Kapton coil former
- Polyamide-imide coated copper voice coil
- Ferrite magnet
- Extended pole piece
- Pressed steel basket
- Paper cone
- Cloth accordian surround
Specifications:
- SPECIFICATION
- Nominal Basket Diameter: 12", 304.8mm
- Nominal Impedance*: 8 ohms
- Power Rating**
- Watts: 250W
- Music Program: 500W
- Resonance: 47.33Hz
- Usable Frequency Range: 57Hz - 4.6kHz
- Sensitivity***: 97.3dB
- Magnet Weight: 38 oz.
- Gap Height: 0.31", 7.92mm
- Voice Coil Diameter: 2", 50.8mm
- THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 47.33Hz
- DC Resistance (Re): 5.42
- Coil Inductance (Le): 0.64mH
- Mechanical Q (Qms): 5.64
- Electromagnetic Q (Qes): 0.52
- Total Q (Qts): 0.48
- Compliance Equivalent Volume (Vas): 120.94 liters / 4.27 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 188.6cc
- Mechanical Compliance of Suspension (Cms): 0.3mm/N
- BL Product (BL): 10.79 T-M
- Diaphragm Mass Inc. Airload (MMs): 37.93 grams
- Efficiency Bandwidth Product (EBP): 90.19
- Maximum Linear Excursion (Xmax): 3.5mm
- Surface Area of Cone (Sd): 538.87 cm2
- Maximum Mechanical Limit (Xlim): 10.4mm
- MOUNTING INFORMATION
- Recommended Enclosure Volume
- Sealed: 26.9-70.79 liters / 0.95-2.5 cu.ft.
- Vented: 32.85-158.5 liters / 1.16-5.6 cu.ft.
- Driver Volume Displaced: 122 cu.in. / 2 liters
- Overall Diameter: 12.03", 305.56mm
- Baffle Hole Diameter: 11.07", 281.18mm
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.25", 6.35mm
- Mounting Holes B.C.D.: 11.59", 294.39mm
- Depth: 4.47", 113.53mm
- Net Weight: 7.8 lbs, 3.54 kg
- Shipping Weight: 10 lbs, 4.54 kgs
- MATERIALS OF CONSTRUCTION
- Coil Construction: Copper voice coil
- Coil Former: Kapton former
- Magnet Composition: Ferrite magnet
- Core Details: Tapered Coax
- Basket Materials: Pressed steel basket
- Cone Composition: Paper cone
- Cone Edge Composition: Cloth cone edge
- Dust Cap Composition: Screened cloth dust cap