Description
8" Coaxial Driver, 8 Ohm, 250 Watt
The Eminence Beta-8CX 8" 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-8CX'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: 8", 203.2mm
- Nominal Impedance*: 8 ohms
- Power Rating**
- Watts: 250W
- Music Program: 500W
- Resonance: 62.09Hz
- Usable Frequency Range: 95Hz - 3.3kHz
- Sensitivity***: 92.9dB
- Magnet Weight: 38 oz.
- Gap Height: 0.31", 7.92mm
- Voice Coil Diameter: 2", 50.8mm
- THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 62.09Hz
- DC Resistance (Re): 5.37
- Coil Inductance (Le): 0.67mH
- Mechanical Q (Qms): 6.57
- Electromagnetic Q (Qes): 0.31
- Total Q (Qts): 0.29
- Compliance Equivalent Volume (Vas): 21.43 liters / 0.76 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 67.2cc
- Mechanical Compliance of Suspension (Cms): 0.35mm/N
- BL Product (BL): 11.21 T-M
- Diaphragm Mass Inc. Airload (MMs): 18.51 grams
- Efficiency Bandwidth Product (EBP): 201.3
- Maximum Linear Excursion (Xmax): 3.2mm
- Surface Area of Cone (Sd): 210 cm2
- Maximum Mechanical Limit (Xlim): 6.9mm
- MOUNTING INFORMATION
- Recommended Enclosure Volume
- Sealed: 3.4-9.91 liters / 0.12-0.35 cu.ft.
- Vented: 7.08-16.99 liters / 0.25-0.6 cu.ft.
- Driver Volume Displaced: 48.4 cu.in. / 0.79 liters
- Overall Diameter: 8.24", 209.3mm
- Baffle Hole Diameter: 7.13", 181.1mm
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.22", 5.58mm
- Mounting Holes B.C.D.: 7.75", 196.85mm
- Depth: 3.5", 88.9mm
- Net Weight: 6.8 lbs, 3.08 kg
- Shipping Weight: 7.5 lbs, 3.4 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: Sealed cloth cone edge
- Dust Cap Composition: Zurette dust cap