Technical specifications

• Nominal Diameter: 460 mm (18 in)
• Overall Diameter: 460 mm (18.11 in)
• Bolt Circle Diameter: 440 mm (17.32 in)
• Baffle Cutout Diameter: 424 mm (16.7 in)
• Overall Depth: 202 mm (7.95 in)
• Flange/Gasket Thickness: 13.9 mm (0.55 in)
• Impedance: 8 Ohm
• Minimum Impedance: 6 Ohm
• AES Power: 600 W
• Program Power: 1200 W
• Sensitivity: 99 dB
• Frequency Range: 30:3150 kHz
• Voice Coil Diameter: 77 mm (3 in)
• Voice Coil Material: Cu
• Voice Coil Former: Glass Fiber Fiber
• Voice Coil Depth: 22 mm (0.87 in)
• Magnetic Gap Depth: 10.5 mm (0.41 in)
• Surround Type: Triple Roll Roll
• Spider Profile: 1x variable height waves variable
• Chassis Material: Aluminum
• Magnet Material: Neodymium Slug Slug
• Demodulating Ring: No
• Flux Density: 1.2 T
• Driver Displacement Volume: 5.7 l (0.201 ft^3)

Thiele and small parameters

• Resonance (Fs) - 30 Hz
• DC Resistance (Re) - 5.1 Ohm
• Electrical Q (Qes) - 0.36
• Mechanical Q (Qms) - 12.5
• Total Q (Qts) - 0.35
• Compliance Equivalent Volume (Vas) - 417.9 L
• Diaphragm Area (Sd) - 1207 cm²
• Maximum Linear Excursion (Xmax) - 9.25 mm
• Maximum Mechanical Excursion (Xdamage) - 18 mm
• Moving Mass - System (Mms) - 137.0 g
• Force Factor (BL) - 19 Tm
• Voice Coil Inductance (Le) - 1.35 mH
• Moving Mass - Diaphragm (Mmd) - 89.6 g
• Compliance (Cms) - 0.21 mm/N
• Mechanical Resistance (Rms) - 2.1 Kg/s
• Reference Efficiency (Eta Zero) - 3.00 %
• Efficiency Bandwidth Product (EBP) - 83

Shipping Information

• Net Weight: 4.6 kg (10.1 lb)
• Shipping Weight: 6 kg (13.2 lb)
• Shipping Box: 503 x 500 x 258 mm x

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