Technical specifications

• Nominal Diameter: 460 mm (18in)
• Impedance: 8 Ohm
• Minimum Impedance: 5.8 Ohm
• AES Power: 700 W
• Program Power: 1400 W
• Sensitivity: 99 dB
• Frequency Range: 30 -1400 Hz
• Voice Coil Material: Copper
• Voice Coil Former: Glass Fiber
• Voice Coil Depth: 19 mm (0.75in)
• Magnetic Gap Depth: 11 mm (0.43in)
• Cone Material: Water Resistant Treated Paper + Water Proof Both Sides Treatment
• Surround Material: Polycotton
• Chassis Material: Aluminium
• Magnet Material: Ferrite
• Magnet Dims: 220 x 110 x 25 mm
• Driver Displacement Volume: 8.5 l (0.3ft³)
• Recommended Enclosure: 159 l (5.62ft³)
• Recommended Tuning: 40 Hz

Thiele and small parameters

• DC Resistance (Re) - 4.9 Ohm
• Resonance (Fs) - 33 Hz
• Moving Mass - System (Mms) - 198.3 g
• Compliance (Cms) - 0.121 mm/N
• Force Factor (BL) - 25.76 Tm
• Mechanical Q (Qms) - 7.98
• Electrical Q (Qes) - 0.3
• Total Q (Qts) - 0.29
• Compliance Equivalent Volume (Vas) - 257.25 L
• Voice Coil Inductance (Le) - 1.62 mH
• Diaphragm Area (Sd) - 1225.4 cm²
• Reference Efficiency (Eta Zero) - 2.84% %
• Efficiency Bandwidth Product (EBP) - 40
• Maximum Linear Excursion (Xmax) - 6.8 mm
• Maximum Mechanical Excursion (Xmech) - 13 mm

Shipping Information

• Net weight: 11.9 kg (26.1lb)
• Multipack size (WxDxH): 558 x 558 x 245 mm (22 x 22 x 9.6in)
• Multipack weight: 15.8 kg (34.7lb)