SB Acoustics SB21RDC-C000-4

SB Acoustics SB21RDC-C000-4 Tweeter

• Non-resonant diaphragm design for minimum high frequency break-up
• 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 = 760 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 90 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 = 4.6 cm²
• effective mechanical mass incl. air load mms = 0,25 g
• total Q factor Qts = 1.0 (Qms=2.54, Qes=1.64)
• voice coil diameter = 20.4 mm
• mounting diameter d = 60 mm
• overall diameter d = 92 mm
• mounting depth (not countersunk) t = 26.5 mm