Technical specifications

• Nominal Diameter: 66 mm (2.5 in)
• Overall Diameter: 88/68 mm (3.46/2.68 in)
• Bolt Circle Diameter: 75 mm (2.95 in)
• Baffle Cutout Diameter: 60.5 mm (2.38 in)
• Overall Depth: 32.5 mm (1.28 in)
• Flange/Gasket Thickness: 6 mm (0.24 in)
• Impedance: 8 Ohm
• Minimum Impedance: 6.6 Ohm
• AES Power: 20 W
• Program Power: 40 W
• Sensitivity: 85 dB
• Frequency Range: 170:20000 kHz
• Voice Coil Diameter: 19 mm (0.75 in)
• Voice Coil Material: Al
• Voice Coil Former: Kapton
• Voice Coil Depth: 4.5 mm (0.18 in)
• Magnetic Gap Depth: 3 mm (0.12 in)
• Surround Type: Half Roll Roll
• Spider Profile: 1x constant height waves constant
• Chassis Material: Polycarbonate
• Magnet Material: Neodymium Ring Ring
• Demodulating Ring: No
• Flux Density: 1.3 T
• Driver Displacement Volume: 0.030 l (0.001 ft^3)

Thiele and small parameters

• Resonance (Fs) - 170 Hz
• DC Resistance (Re) - 6.5 Ohm
• Electrical Q (Qes) - 1.22
• Mechanical Q (Qms) - 4.1
• Total Q (Qts) - 0.94
• Compliance Equivalent Volume (Vas) - 0.3 L
• Diaphragm Area (Sd) - 20.1 cm²
• Maximum Linear Excursion (Xmax) - 1.75 mm
• Maximum Mechanical Excursion (Xdamage) - 5.3 mm
• Moving Mass - System (Mms) - 1.9 g
• Force Factor (BL) - 3.5 Tm
• Voice Coil Inductance (Le) - 0.11 mH
• Moving Mass - Diaphragm (Mmd) - 1.8 g
• Compliance (Cms) - 0.46 mm/N
• Mechanical Resistance (Rms) - 0.5 Kg/s
• Reference Efficiency (Eta Zero) - 0.12 %
• Efficiency Bandwidth Product (EBP) - 139

Shipping Information

• Net Weight: 0.122 kg (0.3 lb)
• Shipping Weight: 0.161 kg (12.8 lb)
• Multipack Quantity: 36

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