Recommended for professional audio as a mid/hi or full-range and monitor; also for bass guitar. Works well in
sealed or vented enclosures.

• Nominal Basket Diameter 12", 304.8 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 250 W / Music Program 500 W
• Resonance 37 Hz
• Usable Frequency Range 48 Hz - 4 kHz
• Sensitivity 99.9
• Magnet Weight 7 oz
• Gap Height 0.275", 7 mm
• Voice Coil Diameter 2.5", 63.5 mm 

• Resonant Frequency (fs) 37Hz
• DC Resistance (Re) 5.04
• Coil Inductance (Le) 0.46 mH
• Mechanical Q (Qms) 3.13
• Electromagnetic Q (Qes) 0.44
• Total Q (Qts) 0.39
• Compliance Equivalent Volume (Vas) 147 liters / 5.2 cu. ft.
• Peak Diaphragm Displacement Volume 255 cc
• Mechanical Compliance of Suspension (Cms) 0.38 mm/N
• BL Product (BL) 11.3 T-M
• Diaphragm Mass inc. Airload (Mms) 49 grams
• Efficiency Bandwidth Product (EBP) 84
• Maximum Linear Excursion (Xmax) 4.9 mm
• Surface Area of Cone (Sd) 519.5 cm²
• Maximum Mechanical Limit (Xlim) 8.5 mm 

• Recommended Enclosure Volume
  Sealed 23-28 liters/0.8-1 cu. ft.
  Vented 33-85 liters/1.2-3 cu. ft.
• Overall Diameter 12.38", 314.5 mm
• Baffle Hole Diameter 11.06", 280.9 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.28", 7 mm
• Mounting Holes B.C.D. 11.62", 295.1 mm
• Depth 6.06", 154 mm

• Aluminum voice coil
• Polyimide former
• Neodymium magnet
• Vented core
• Die-cast aluminum basket/ heatsink
• Paper Cone
• Cloth cone edge
• Solid composition paper dust cap