Technical specifications

• Nominal Diameter: 460 mm (18in)
• Impedance: 8 Ohm
• Minimum Impedance: 7 Ohm
• AES Power: 1800 W
• Program Power: 3600 W
• Sensitivity: 95.5 dB
• Frequency Range: 30 - 1000 Hz
• Voice Coil Material: Copper
• Voice Coil Former: Glass Fiber
• Voice Coil Depth: 32.5 mm (1.28in)
• Magnetic Gap Depth: 15 mm (0.59in)
• Cone Material: Water Resistant Treated Paper + Water Proof Both Sides Treatment
• Surround Material: Polycotton
• Chassis Material: Aluminium
• Magnet Material: Ferrite
• Magnet Dims: 253 x 127 x 30 mm
• Driver Displacement Volume: 8.46 l (0.299ft³)
• Recommended Enclosure: 200 l (7.01ft³)
• Recommended Tuning: 35 Hz

Thiele and small parameters

• DC Resistance (Re) - 5.5 Ohm
• Resonance (Fs) - 37 Hz
• Moving Mass - System (Mms) - 293.83 g
• Compliance (Cms) - 0.061 mm/N
• Force Factor (BL) - 29.29 Tm
• Mechanical Q (Qms) - 9.82
• Electrical Q (Qes) - 0.44
• Total Q (Qts) - 0.43
• Compliance Equivalent Volume (Vas) - 130.4 L
• Voice Coil Inductance (Le) - 2.9 mH
• Diaphragm Area (Sd) - 1225.4 cm²
• Reference Efficiency (Eta Zero) - 1.49% %
• Efficiency Bandwidth Product (EBP) - 84
• Maximum Linear Excursion (Xmax) - 12.5 mm
• Maximum Mechanical Excursion (Xmech) - 21.8 mm

Shipping Information

• Net weight: 16.8 kg (37lb)
• Multipack size (WxDxH): 520 x 520 x 280 mm (20.5 x 20.5 x 11.0in)
• Multipack weight: 18.5 kg (40.8lb)