Technical specifications

• Nominal Diameter: 300 mm (12in)
• Overall Diameter: 316 mm (12.44in)
• Bolt Circle Diameter: 298.5 mm (11.75in)
• Baffle Cutout Diameter: 282 mm (11.10in)
• Overall Depth: 140 mm (5.51in)
• Flange/Gasket Thickness: 12 mm (0.47in)
• Impedance: 4 ohm
• Minimum Impedance: 4.3 ohm
• AES Power: 500 W
• Program Power: 1000 W
• Sensitivity: 97 dB
• Frequency Range: 45:3150 Hz
• Voice Coil Diameter: 77 mm (3in)
• Voice Coil Material: Al
• Voice Coil Former: Glass Fiber
• Voice Coil Depth: 18.5 mm (0.73in)
• Magnetic Gap Depth: 10.5 mm (0.41in)
• Surround Type: M-Roll
• Spider Profile: 1x variable height waves
• Chassis Material: Aluminum
• Magnet Material: Ferrite Ring
• Demodulating Ring: No
• Flux Density: 1.2 T
• Driver Displacement Volume: 2.9 L (0.102ft^3)

Thiele and small parameters

• Resonance (Fs) - 45 Hz
• DC Resistance (Re) - 3.3 Ohm
• Electrical Q (Qes) - 0.26
• Mechanical Q (Qms) - 7.9
• Total Q (Qts) - 0.25
• Compliance Equivalent Volume (Vas) - 75.2 L
• Diaphragm Area (Sd) - 533 cm²
• Maximum Linear Excursion (Xmax) - 7.50 mm
• Maximum Mechanical Excursion (Xdamage) - 21.5 mm
• Moving Mass - System (Mms) - 66.0 g
• Force Factor (BL) - 16.3 Tm
• Voice Coil Inductance (Le) - 0.8 mH
• Moving Mass - Diaphragm (Mmd) - 52.1 g
• Compliance (Cms) - 0.19 mm/N
• Mechanical Resistance (Rms) - 2.4 Kg/s
• Reference Efficiency (Eta Zero) - 2.87 %
• Efficiency Bandwidth Product (EBP) - 173

Shipping Information

• Net Weight: 7.8 kg (17.2lb)
• Shipping Weight: 8.7 kg (19.2lb)
• Shipping Box: 350 x 346 x 190 mm

Notes

1 - AES Power: 2 Hours Test According to AES 2-1984 Rev. 2003
2 - Maximum/Program power is defined as 3 dB greater than AES Power
3 - Xmax: Xmax= [(winding depth - magnetic gap depth)/2] + (magnetic gap depth/3)
4 - Xdamage: Maximum excursion before permanent damage