Technical specifications

• Nominal Diameter: 80 mm (3in)
• Overall Diameter: 105.6/81 mm (4.16/3.19in)
• Bolt Circle Diameter: 92 mm (3.62in)
• Baffle Cutout Diameter: 73.6 mm (2.90in)
• Overall Depth: 54.5 mm (2.15in)
• Flange/Gasket Thickness: 6.5 mm (0.26in)
• Impedance: 4 ohm
• Minimum Impedance: 3.5 ohm
• AES Power: 20 W
• Program Power: 40 W
• Sensitivity: 91 dB
• Frequency Range: 100:20000 Hz
• Voice Coil Diameter: 19 mm (0.75in)
• Voice Coil Material: Al
• Voice Coil Former: Kapton
• Voice Coil Depth: 4.8 mm (0.19in)
• Magnetic Gap Depth: 4 mm (0.16in)
• Surround Type: Half
• Spider Profile: 1x constant height waves
• Chassis Material: Steel
• Magnet Material: Ferrite Ring
• Demodulating Ring: Copper Cap
• Flux Density: 1.1 T
• Driver Displacement Volume: 0.125 L (0.004ft^3)

Thiele and small parameters

• Resonance (Fs) - 110 Hz
• DC Resistance (Re) - 3.3 Ohm
• Electrical Q (Qes) - 0.60
• Mechanical Q (Qms) - 3.9
• Total Q (Qts) - 0.52
• Compliance Equivalent Volume (Vas) - 1.3 L
• Diaphragm Area (Sd) - 33 cm²
• Maximum Linear Excursion (Xmax) - 1.73 mm
• Maximum Mechanical Excursion (Xdamage) - 7.9 mm
• Moving Mass - System (Mms) - 2.4 g
• Force Factor (BL) - 3 Tm
• Voice Coil Inductance (Le) - 0.04 mH
• Moving Mass - Diaphragm (Mmd) - 2.2 g
• Compliance (Cms) - 0.87 mm/N
• Mechanical Resistance (Rms) - 0.4 Kg/s
• Reference Efficiency (Eta Zero) - 0.28 %
• Efficiency Bandwidth Product (EBP) - 183

Shipping Information

• Net Weight: 545 kg (1.2lb)
• Shipping Weight: 20.8 kg (45.9lb)

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