Eminence Beta 12 - 8 OHMS 250W 12" Driver 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", 304.8mm
• Nominal Impedance 8 ohms
• Power Rating - Watts 250W, Music Program 500W
• Resonance 47Hz
• Usable Frequency Range 43Hz - 3.8kHz
• Sensitivity 98dB/W@1m
• Magnet Weight 38 oz.
• Gap Height 0.31", 7.92mm
• Voice Coil Diameter 2", 50.8mm

Thiele & Small Parameters:

• Resonant Frequency (fs) 47Hz
• DC Resistance (Re) 5
• Coil Inductance (Le) 0.64mH
• Mechanical Q (Qms) 6
• Electromagnetic Q (Qes) 0.5
• Total Q (Qts) 0.46
• Compliance Equivalent Volume (Vas) 120.1 liters / 4.2 cu.ft.
• Peak Diaphragm Displacement Volume (Vd) 237cc
• Mechanical Compliance of Suspension (Cms) 0.29mm/N
• BL Product (BL) 10.8 T-M
• Diaphragm Mass Inc. Airload (MMs) 40 grams
• Efficiency Bandwidth Product (EBP) 94
• Maximum Linear Excursion (Xmax) 4.4mm
• Surface Area of Cone (Sd) 538.9 cm2
• Maximum Mechanical Limit (Xlim) 11mm

Mounting Information:

• Recommended Enclosure Volume: Sealed 25.5-35.4 liters / 0.9-1.25 cu.ft.
• Recommended Enclosure Volume: Vented 36.8-139 liters / 1.3-4.9 cu.ft.
• Driver Volume Displaced 122 cu.in. / 2 liters
• Overall Diameter 12.03", 305.5mm
• Baffle Hole Diameter 10.95", 278.1mm
• Front Sealing Gasket Fitted as standard
• Rear Sealing Gasket Fitted as standard
• Mounting Holes Diameter 0.25", 6.4mm
• Mounting Holes B.C.D. 11.59", 294.3mm
• Depth 4.57", 116mm
• Net Weight 7.5 lbs, 3.4 kg
• Shipping Weight 9.7 lbs, 4.4 kgs

Materials of Construction:

• Coil Construction Copper voice coil
• Coil Former Polyimide former
• Magnet Composition Ferrite magnet
• Core Details Vented and extended core
• Basket Materials Pressed steel basket
• Cone Composition Paper Cone
• Cone Edge Composition Cloth cone edge
• Dust Cap Composition Solid composition paper dust cap