Technical specifications

• Nominal Diameter: 460 mm (18in)
• Overall Diameter: 460 mm (18.11in)
• Bolt Circle Diameter: 440 mm (17.32in)
• Baffle Cutout Diameter: 422 mm (16.61in)
• Overall Depth: 231 mm (9.09in)
• Flange/Gasket Thickness: 14 mm (0.55in)
• Impedance: 4 ohm
• Minimum Impedance: 4.4 ohm
• AES Power: 1600 W
• Program Power: 3200 W
• Sensitivity: 98 dB
• Frequency Range: 30:1500 Hz
• Voice Coil Diameter: 100 mm (4in)
• Voice Coil Material: Cu
• Voice Coil Former: Glass Fiber
• Voice Coil Depth: 31 mm (1.22in)
• Magnetic Gap Depth: 15.5 mm (0.61in)
• Surround Type: Triple
• Spider Profile: 2x non-adjacent symmetrical constant height waves
• Chassis Material: Aluminum
• Magnet Material: Neodymium Slug Crown
• Demodulating Ring: Triple Al Dem. Ring
• Flux Density: 0.98 T
• Driver Displacement Volume: 7.3 L (0.258ft^3)

Thiele and small parameters

• Resonance (Fs) - 32 Hz
• DC Resistance (Re) - 3 Ohm
• Electrical Q (Qes) - 0.32
• Mechanical Q (Qms) - 8.6
• Total Q (Qts) - 0.31
• Compliance Equivalent Volume (Vas) - 201.1 L
• Diaphragm Area (Sd) - 1212 cm²
• Maximum Linear Excursion (Xmax) - 12.92 mm
• Maximum Mechanical Excursion (Xdamage) - 28 mm
• Moving Mass - System (Mms) - 252.3 g
• Force Factor (BL) - 21.7 Tm
• Voice Coil Inductance (Le) - 1.17 mH
• Moving Mass - Diaphragm (Mmd) - 204.6 g
• Compliance (Cms) - 0.10 mm/N
• Mechanical Resistance (Rms) - 5.91 Kg/s
• Reference Efficiency (Eta Zero) - 1.98 %
• Efficiency Bandwidth Product (EBP) - 100

Shipping Information

• Net Weight: 12.2 kg (26.9lb)
• Shipping Weight: 13.7 kg (30.2lb)
• Shipping Box: 490 x 485 x 275 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