Eminence Beta 12A II - 12" 250W 8 Ohm part for Electrovoice SX100+ 85604C
Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure. Also works well for PA in a sealed or bandpass enclosure.
Technical specifications
- Nominal Diameter: 305 mm (12 in)
- Overall Diameter: 305.6 mm (12.03 in)
- Bolt Circle Diameter: 294.4 mm (11.59 in)
- Mounting Holes Diameter: 6.4 mm (0.25 in)
- Baffle Cutout Diameter: 281.2 mm (11.07 in)
- Overall Depth: 139.7 mm (5.5 in)
- Front Sealing Gasket: Yes
- Rear Sealing Gasket: Yes
- Impedance: 8 ohm
- AES Power: 250 W
- Program Power: 500 W
- Sensitivity: 98 dB
- Voice Coil Diameter: 51 mm (2 in)
- Voice Coil Material: Copper voice coil
- Voice Coil Former: Polyimide former
- Magnetic Gap Depth: 7.9 mm (0.312 in)
- Cone Material: Paper cone
- Dust Cap Material: Solid composition paper dust cap
- Surround Material: Cloth cone edge
- Chassis Material: Pressed steel basket
- Magnet Material: Ferrite magnet
- Magnet Weight: 38 oz
- Core Details: Vented and extended core
- Sealed Enclosure Size: 25.5-35.4 L
- Vented Enclosure Size: 36.8-139 L
Thiele and small parameters
- Resonance (Fs) - 47 Hz
- DC Resistance (Re) - 5 Ohm
- Voice Coil Inductance (Le) - 0.64 mH
- Mechanical Q (Qms) - 6
- Electrical Q (Qes) - 0.5
- Total Q (Qts) - 0.46
- Compliance Equivalent Volume (Vas) - 120.1 L
- Peak Displacement Volume (Vd) - 237 cm3
- Compliance (Cms) - 0.29 mm/N
- Force Factor (BL) - 10.8 Tm
- Moving Mass - System (Mms) - 40 g
- Efficiency Bandwidth Product (EBP) - 94
- Maximum Linear Excursion (Xmax) - 4.4 mm
- Diaphragm Area (Sd) - 538.9 cm2
- Maximum Mechanical Excursion (Xmech) - 11 mm
Shipping Information
- Net Weight: 3.4 kg (7.5 lbs)
- Shipping Weight: 4.4 kg (9.7 lbs)
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