SB Acoustics SB21SDC-C000-4

SB Acoustics SB21SDC-C000-4 Tweeter

• Large surround dome for increased acoustic output.
• Dual balanced compression chamber for improved dynamics.
• Copper cap for reduced voice coil inductance and minimum phase shift.
• Saturation controlled motor system for low distortion.
• Non-reflective rear chamber with optimized damping for improved dynamics.
• Flow optimized vented pole piece for optimum coupling to rear chamber.
• CCAW voice coil for low moving mass.
• Long life silver lead wires.
• Low resonance frequency.

Specifications

• power handling (continuous/programme) = 30 W
• frequency range = 1000-40000 Hz
• resonance frequency fs = 720 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 91 dB (2,83V; 1m)
• DC resistance Re = 3.1 Ohm
• force factor BL = 1.5 N/A
• voice coil inductance L = 0.04 mH
• effective piston radiating area Sd = 4.9 cm²
• effective mechanical mass incl. air load mms = 0,25 g
• total Q factor Qts = 0.95 (Qms=2.41, Qes=1.55)
• voice coil diameter = 20.4 mm
• mounting diameter d = 60 mm
• overall diameter d = 92 mm
• mounting depth (not countersunk) t = 26.5 mm