SPECIFICATION

• Nominal Basket Diameter 12", 304.8 mm
• Nominal Impedance 16 ohms
• Power Rating Watts 225 W / Music Program 450 W
• Resonance 53.8 Hz
• Usable Frequency Range 48 Hz - 8 kHz
• Sensitivity 97.7
• Magnet Weight 38 oz.
• Gap Height 0.313", 7.94 mm
• Voice Coil Diameter 2", 50.8 mm

THIELE & Small Parameters

• Resonant Frequency (fs) 53.8 Hz
• DC Resistance (Re) 15.44
• Coil Inductance (Le) 1.44 mH
• Mechanical Q (Qms) 7.22
• Electromagnetic Q (Qes) 0.70
• Total Q (Qts) 0.63
• Compliance Equivalent Volume (Vas) 101.7 liters / 3.6 cu. ft.
• Peak Diaphragm Displacement Volume (Vd) 42.4 cc
• Mechanical Compliance of Suspension (Cms) 0.247 mm/N
• BL Product (BL) 16.32 T-M
• Diaphragm Mass inc. Airload (Mms) 35.5 grams
• Efficiency Bandwidth (EBP) Product 77.4
• Maximum Linear Excursion (Xmax) 0.79 mm
• Surface Area of Cone (Sd) 538.9 cm²
• Maximum Mechanical Limit (Xlim) 8.0 mm

MOUNTING Information

Sealed 14-51 liters/0.5-1.8 cu.ft.  
Vented 56.6-116 liters/2-4.1 cu.ft.
• Overall Diameter 12.03", 305.5 mm
• Baffle Hole Diameter 10.95", 278.1 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.25", 6.4 mm
• Mounting Holes B.C.D. 11.59", 294.3 mm
• Depth 4.47", 114 mm

MATERIALS of Construction

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Vented core
• Pressed steel basket
• Paper Cone
• Cloth cone edge
• Solid composition paper dust cap