SB Acoustics SB26STWGC-4 / Fabric Dome Tweeter

The SB Acoustics SB26STWGC-4 is a 26 mm (1”) fabric dome tweeter with an integrated waveguide, designed for improved dispersion, higher efficiency, and easier crossover integration. It’s a step above standard dome tweeters when you want controlled directivity and a cleaner handoff to the midwoofer.

Features

• Solid aluminium waveguide
• Controlled directivity
• Adapter ring for bolt-less mounting to driver
• Copper cap for reduced voice coil inductance and minimum phase shift
• Non-reflective rear chamber with optimized damping for improved dynamics
• Flow optimized vented pole piece for optimum coupling to rear chamber
• Fine weave soft fabric dome for smooth frequency response
• Saturation controlled motor system for low distortion
• CCAW voice coil for low moving mass
• Long life silver lead wires
• Low resonance frequency

Specs

• Nominal Impedance 4 Ω
• DC resistance, Re 3.2 Ω
• Voice coil inductance, Le – 0.04 mH
• Effective piston area, Sd – 6.2 cm²
• Voice coil diameter 25.4 mm
• Voice coil height 1.3 mm
• Air gap height 2.5 mm
• Linear coil travel (p-p) 1.2 mm
• Moving mass incl. air, Mms – 0.3 g
• Free air resonance, Fs 780 Hz
• Sensitivity (2.83V/1m) 93 dB
• Mechanical Q-factor, Qms – 2.8
• Electrical Q-factor, Qes – 2.1
• Total Q-factor, Qts – 1.2
• Force factor, Bl – 1.6 Tm
• Rated power handling* 120 W
• Magnetic flux density 1.15 T
• Magnet weight 0.22 kg
• Net weight 0.61 kg
  *IEC 268-5, high-pass Butterworth, 2600 Hz, 12 dB/oct