2.5in-SB65WBAC25-4

2½” SB65WBAC25-4 / Aluminium

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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.