Beta 12A

Beta 12A

Beta 12A

Beta 12A
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NZ $240.00
incl GST
Stock Level:
Recommended for professional audio and bass guitar applications as a woofer in a vented enclosure.
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.
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
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.
Vented 36.8-139 liters / 1.3-4.9 cu.ft.
Driver Volume Displaced 122 / 2 liters
Overall Diameter 12.03", 305.5mm
Baffle Hole Diameter 11.07", 281.2mm
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

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Auckland, New Zealand

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