Eminence Alpha 12 - 12" 150W 8 Ohm

Technical specifications

• Nominal Diameter: 305 mm (12 in)
• Overall Diameter: 311.4 mm (12.26 in)
• Bolt Circle Diameter: 297.4 mm (11.71 in)
• Mounting Holes Diameter: 6.4 mm (0.25 in)
• Baffle Cutout Diameter: 280.9 mm (11.06 in)
• Overall Depth: 120.1 mm (4.73 in)
• Front Sealing Gasket: Yes
• Rear Sealing Gasket: Yes
• Impedance: 8 ohm
• AES Power: 150 W
• Program Power: 300 W
• Sensitivity: 95.6 dB
• Voice Coil Diameter: 38 mm (1.5 in)
• Voice Coil Material: Copper voice coil
• Voice Coil Former: Polyimide former
• Magnetic Gap Depth: 6.4 mm (0.25 in)
• Cone Material: Paper cone
• Dust Cap Material: Solid composition felt dust cap
• Surround Material: Cloth cone edge
• Chassis Material: Pressed steel basket
• Magnet Material: Ferrite magnet
• Magnet Weight: 20 oz
• Core Details: Vented and extended core
• Sealed Enclosure Size: 17-22.7 L
• Vented Enclosure Size: 56.6-113.3 L

Thiele and Small parameters:  Need some help? Read our quick guide to TS Params.

• Resonance (Fs) - 49 Hz
• DC Resistance (Re) - 6.3 Ohm
• Voice Coil Inductance (Le) - 0.79 mH
• Mechanical Q (Qms) - 6.53
• Electrical Q (Qes) - 0.88
• Total Q (Qts) - 0.77
• Compliance Equivalent Volume (Vas) - 121.5 L
• Peak Displacement Volume (Vd) - 125 cm³
• Compliance (Cms) - 0.32 mm/N
• Force Factor (BL) - 8.5 Tm
• Moving Mass - System (Mms) - 33 g
• Efficiency Bandwidth Product (EBP) - 56
• Maximum Linear Excursion (Xmax) - 2.4 mm
• Diaphragm Area (Sd) - 519.5 cm²
• Maximum Mechanical Excursion (Xmech) - 6.6 mm

Shipping Information

• Net Weight: 2.4 kg (5.3 lbs)
• Shipping Weight: 3.36 kg (7.4 lbs)