SB ACOUSTICS SB21RDCN-C000-4 21mm 4ohm Neodymium Patented Ring Dome Tweeter

SB ACOUSTICS SB21RDCN-C000-4 21mm 4ohm Neodymium Patented Ring Dome Tweeter

Key Features:

• Non-resonant diaphragm design for minimum high frequency break-up
• Copper cap for reduced voice coil inductance and minimum phase shift
• Compact low distortion neodymium motor system
• Non-resonant rear chamber with optimized damping for improved dynamics
• CCAW voice coil for low moving mass
• Long life silver lead wires
• Low resonance frequency

SB21RDCN-C000-4 Specifications:

• Nominal Impedance 4 Ω
• DC resistance, Re 3.1 Ω
• Voice coil inductance, Le 0.04 mH
• Effective piston area, Sd 4.6 cm²
• Voice coil diameter 20.4 mm
• Voice coil height 1.5 mm
• Air gap height 2.0 mm
• Linear coil travel (p-p) 0.5 mm
• Moving mass incl. air, Mms 0.25 g
• Free air resonance, Fs 850 Hz
• Sensitivity (2.83V/1m) 89.5 dB
• Mechanical Q-factor, Qms 2.71
• Electrical Q-factor, Qes 2.45
• Total Q-factor, Qts 1.28
• Force factor, Bl 1.3 Tm
• Rated power handling* 40 W
• Magnetic flux density 0.9 T
• Magnet weight 0.01 kg
• Net weight 0.06 kg

Why Choose Lean Business Audio?

50 years of experience of designing, building and supplying Home, Car and Professional Audio.

Huge stocks of leading loudspeakers and audio brands
KEF, Celestion, Eminence, WGS, Montage, BMS Speakers, Faital Pro, Eighteen Sound, Ciare

Low Worldwide shipping rates.
Free Delivery on selected brands with the UK.
Price matching.

For more information please contact us at: +44(0)1473 744089
Or Email us at: sales@lean-business.co.uk