SB Acoustics SB65WBAC25-4 2.5'' Full Range

Features

• Geometrically furrowed aluminum cone for extended usable frequency range
• Copper cap for increased high frequency output, reduced phase shift at higher frequencies and improved power handling capability
• Low damping surround and non-conductive voice coil former to ensure dynamics and an open/transparent sound character with excellent detailing/resolution
• Linear neodymium motor system for reduced distortion
• Vented voice coil former for reduced compression

Specs

• Nominal Impedance 4 Ω
• DC resistance, Re 3.6 Ω
• Voice coil inductance, Le 0.15 mH
• Effective piston area, Sd 20 cm2
• Voice coil diameter 25.4 mm
• Voice coil height 8.3 mm
• Air gap height 3 mm
• Linear coil travel (p-p) 5.3 mm
• Magnetic flux density 1.02 T
• Magnet weight (NEO) 0.02 kg
• Net weight 0.14 kg
• Free air resonance, Fs 115 Hz
• Sensitivity (2.83 V / 1 m) 83.5 dB
• Mechanical Q-factor, Qms 6.0
• Electrical Q-factor, Qes 0.77
• Total Q-factor, Qts 0.68
• Moving mass incl. air, Mms 2.5 g
• Force factor, Bl 2.9 Tm
• Equivalent volume, Vas 0.43 liters
• Compliance, Cms 0.77 mm/N
• Mechanical loss, Rms 0.3 kg/s
• Rated power handling* 20 W

* IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct, T/S parameters measured on drive units that are broken in.