BETA- 12A Series Standard American
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.
SPECIFICATION - Nominal Basket Diameter 12", 304.8 mm
- Nominal Impedance 16 ohms
- Power Rating Watts 250 W / Music Program 500 W
- Resonance 47 Hz
- Usable Frequency Range 43 Hz - 3.8 kHz
- Sensitivity 98
- Magnet Weight 38 oz.
- Gap Height 0.312", 7.92 mm
- Voice Coil Diameter 2", 50.8 mm
THIELE & Small Parameters - Resonant Frequency (fs) 47.1 Hz
- DC Resistance (Re) 9.81 Ohms
- Coil Inductance (Le) 1.33 mH
- Mechanical Q (Qms) 9.05
- Electromagnetic Q (Qes) 0.62
- Total Q (Qts) 0.58
- Compliance Equivalent Volume (Vas) 116.6 liters
- Peak Diaphragm Displacement Volume (Vd) 128.0 cc
- Mechanical Compliance of Suspension (Cms) 0.283 mm/N
- BL Product (BL) 13.75 T-M
- Diaphragm Mass inc. Airload (Mms) 40.3 grams
- Efficiency Bandwidth Product (EBP) 76.0
- Maximum Linear Excursion (Xmax) 2.37 mm
- Surface Area of Cone (Sd) 538.9 cm²
- Maximum Mechanical Limit (Xlim) 11 mm
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. - Overall Diameter 12.03", 305.5 mm
- Baffle Hole Diameter 10.95", 278.1 mm
- Front Sealing Gasket standard fitted as standard
- Rear Sealing Gasket standard fitted as standard
- Mounting Holes Diameter 0.25", 6.4 mm
- Mounting Holes B.C.D. 11.59", 294.3 mm
- Depth 4.57", 116 mm
MATERIALS of Construction - Copper voice coil
- Polyimide former
- Ferrite magnet
- Vented and extended core
- Pressed steel basket
- Paper Cone
- Cloth cone edge
- Solid composition paper dust cap
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