Specification

• Nominal Basket Diameter 76 mm, 3"
• Nominal Impedance* 8 ohms
• Power Rating*
• Program Power 60 W
• Watts 30 W
• Resonance 118 Hz
• Usable Frequency Range 150 Hz - 20 kHz
• Sensitivity* 88.6 dB
• Magnet Weight 8 oz.
• Gap Height 2.5 mm, 0.1"
• Voice Coil Diameter 20 mm

Thiele & Small Parameters

• Resonant Frequency (fs) 118 Hz
• DC Resistance (Re) 5.12 ohms
• Coil Inductance (Le) 0.11m H
• Mechanical Q (Qms) 7.94
• Electromagnetic Q (Qes) 0.53
• Total Q (Qts) 0.5
• Compliance Equivalent Volume (Vas) 0.95 liters / 0.03 cu.ft.
• Peak Diaphragm Displacement Volume (Vd) 6.9 cc
• Mechanical Compliance of Suspension (Cms) 0.84 mm/N
• BL Product (BL) 3.93 T-M
• Diaphragm Mass Inc. Airload (MMs) 2 grams
• Efficiency Bandwidth Product (EBP) 220
• Maximum Linear Excursion (Xmax) 2.4 mm
• Surface Area of Cone (Sd) 28.6 cm2
• Maximum Mechanical Limit (Xlim) 4 mm

Mounting Information

• Recommended Enclosure Volume
• Sealed 0.85-1.42 litres / 0.03-0.05 cu.ft.
• Vented 1.42-1.98 litres / 0.05-0.07 cu.ft.
• Driver Volume Displaced 0.005 cu.ft. / 0.13 litres
• Major Diameter 3.98", 101.1 mm
• Flat to Flat Diameter 3.24", 82.3 mm
• Baffle Hole Diameter 3.04", 77.2 mm
• Front Sealing Gasket Yes
• Rear Sealing Gasket Yes
• Mounting Holes Diameter 0.16", 4.1mm
• Mounting Holes B.C.D. 3.63", 92.1mm
• Depth 1.76", 44.6 mm
• Net Weight 0.9 lbs, 0.41 kg
• Shipping Weight 1.1 lbs, 0.5 kgs

Materials of Construction

• Coil Construction Copper voice coil
• Coil Former Polyimide former
• Magnet Composition Ferrite magnet
• Core Details Vented / Flux source cap
• Basket Materials Pressed steel
• Cone Composition Paper / Poly sandwich cone
• Cone Edge Composition Poly cone edge
• Dust Cap Composition Poly dust cap