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LAB 12 | 12" Professional Series Speaker - $175 (OSBURN)
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Nominal Basket Diameter 12", 305 mm
Nominal Impedance* 6 Ω
Power Rating*
Program Power 800 W
Watts 400 W
Resonance 22 Hz
Usable Frequency Range 25 Hz - 0.1 kHz
Sensitivity* 89.2 dB
Magnet Weight 160 oz.
Gap Height 0.375", 9.5 mm
Voice Coil Diameter 2.5", 64 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 22 Hz
DC Resistance (Re) 4.29 Ω
Coil Inductance (Le) 1.48m H
Mechanical Q (Qms) 13.32
Electromagnetic Q (Qes) 0.39
Total Q (Qts) 0.38
Compliance Equivalent Volume (Vas) 125.2 liters / 4.42 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 659 cc
Mechanical Compliance of Suspension (Cms) 0.35 mm/N
BL Product (BL) 15 T-M
Diaphragm Mass Inc. Airload (MMs) 146 grams
Efficiency Bandwidth Product (EBP) 56
Maximum Linear Excursion (Xmax) 13 mm
Surface Area of Cone (Sd) 506.7 cm2
Maximum Mechanical Limit (Xlim) 22 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed 22.7-28.3 liters / 0.8-1 cu.ft.
Vented 45.3-101.9 liters / 1.6-3.6 cu.ft.
Driver Volume Displaced 0.109 cu.ft. / 3.09 liters
Overall Diameter 12.32", 312.9 mm
Baffle Hole Diameter 11.04", 280.4 mm
Front Sealing Gasket Yes
Rear Sealing Gasket N/A
Mounting Holes Diameter 0.26", 6.6mm
Mounting Holes B.C.D. 11.77", 299mm
Depth 6.44", 163.6 mm
Net Weight 22 lbs, 9.98 kg
Shipping Weight 23.8 lbs, 10.8 kgs
MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Double stacked 80 oz. ferrite magnets
Core Details Vented and extended core
Basket Materials 12-spoke die-cast aluminum basket
Cone Composition Kevlar-reinforced paper cone
Cone Edge Composition Foam cone edge
Dust Cap Composition Dual inverted dust caps