The SB14ST-C000-4 is a 1/2″ fabric dome tweeter from SB Acoustics, designed for compact speaker systems or as a supertweeter in high-frequency extension applications.
The SB14ST-C000-4 is a 1/2″ fabric dome tweeter from SB Acoustics, designed for compact speaker systems or as a supertweeter in high-frequency extension applications.
Features
Very compact design
Excellent piston diameter to OD ratio
Large surround for smooth dispersion
Threaded rear center hole for easy mounting
Long insulated lead wires for versatile integration
Specs
Nominal Impedance 4 Ω
DC resistance, Re 4.0 Ω
Voice coil inductance, Le 0.04 mH
Effective piston area, Sd 2.2 cm2
Voice coil diameter 12.4 mm
Voice coil height 1.2 mm
Air gap height 1.5 mm
Linear coil travel (p-p) 0.3 mm
Moving mass incl. air, Mms 0.11 g
Free air resonance, Fs 1300 Hz
Sensitivity (2.83V/1m) 86 dB
Mechanical Q-factor, Qms –
Electrical Q-factor, Qes –
Total Q-factor, Qts –
Force factor, Bl 0.92 Tm
Rated power handling* 10 W
Magnetic flux density 0.97 T
Magnet weight 3.4 g
Net weight 0.014 kg
*IEC 268-5, high-pass Butterworth, 2600 Hz, 12 dB/oct
Use Cases
Miniature speakers – like desktop monitors, portable speakers, or narrow baffle designs.
Supertweeter – to extend high-frequency response in multi-driver setups.
Coaxial designs – can be integrated into midrange waveguides or custom horns.
✅ Pros
Compact and easy to fit in tight designs.
Smooth, non-fatiguing sound thanks to the fabric dome.
Extended high-frequency response for sparkle and air.
Low distortion at moderate levels.
⚠️ Things to Consider
Not designed for low crossover points – best crossed above ~3.5–4 kHz.
Limited power handling – not for very loud systems or large rooms.
Works best in small speakers or as a high-end detail tweeter, not a main tweeter in large 2-ways.
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