Technical specifications

• Nominal Diameter: 530 mm (21in)
• Impedance: 1 Ohm
• Minimum Impedance: 1.05 Ohm
• AES Power: 2500 W
• Program Power: 5000 W
• Sensitivity: 99 dB
• Frequency Range: 35 - 1000 Hz
• Voice Coil Material: Edgewound CCA
• Voice Coil Former: Glass Fiber
• Voice Coil Depth: 50.6 mm (1.99in)
• Magnetic Gap Depth: 18 mm (0.71in)
• Cone Material: Water Resistant Treated Paper + Water Proof Front Side Treatment
• Surround Material: Polycotton
• Chassis Material: Aluminium
• Magnet Material: Neodymium
• Magnet Dims: 145 x 51 x 24 (5.71 x 2.01 x 0.94 mm
• Driver Displacement Volume: 7.95 l (0.28ft³)
• Recommended Enclosure: 200 l (7.06ft³)
• Recommended Tuning: 40 Hz

Thiele and small parameters

• DC Resistance (Re) - 0.7 Ohm
• Resonance (Fs) - 36 Hz
• Moving Mass - System (Mms) - 481.6 g
• Compliance (Cms) - 0.04 mm/N
• Force Factor (BL) - 19.92 Tm
• Mechanical Q (Qms) - 3.45
• Electrical Q (Qes) - 0.19
• Total Q (Qts) - 0.18
• Compliance Equivalent Volume (Vas) - 164.56 L
• Voice Coil Inductance (Le) - 0.46 mH
• Diaphragm Area (Sd) - 1698.2 cm²
• Reference Efficiency (Eta Zero) - 3.84 %
• Efficiency Bandwidth Product (EBP) - 186
• Maximum Linear Excursion (Xmax) - 20.8 mm
• Maximum Mechanical Excursion (Xmech) - 32.3 mm

Shipping Information

• Net weight: 20.7 kg (45.6lb)
• Multipack size (WxDxH): 570 x 570 x 305 mm (22.4 x 22.4 x 12in)
• Multipack weight: 26.1 kg (57.5lb)