Eminence Beta 12A 12'' Bass Guitar Speaker - 8 Ohm

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.

Specifications

Nominal Basket Diameter: 12", 305 mm
Nominal Impedance: 8 Ω
Program Power: 500 W
Watts: 250 W
Resonance: 47 Hz
Usable Frequency Range: 43 Hz - 3.8 kHz
Sensitivity: 98 dB
Magnet Weight: 38 oz.
Gap Height: 0.312", 7.9 mm
Voice Coil Diameter: 2", 51 mm
Resonant Frequency (fs): 47 Hz
DC Resistance (Re): 5 Ω
Coil Inductance (Le): 0.64m H
Mechanical Q (Qms): 6
Electromagnetic Q (Qes): 0.5
Total Q (Qts): 0.46
Compliance Equivalent Volume (Vas): 120.1 liters / 4.24 cu.ft.
Peak Diaphragm Displacement Volume (Vd): 237 cc
Mechanical Compliance of Suspension (Cms): 0.29 mm/N
BL Product (BL): 10.8 T-M
Diaphragm Mass Inc. Airload (MMs): 40 grams
Efficiency Bandwidth Product (EBP): 94
Maximum Linear Excursion (Xmax): 4.4 mm
Surface Area of Cone (Sd): 538.9 cm2
Maximum Mechanical Limit (Xlim): 11 mm