SB ACOUSTICS SB15SFCR39-4 5×8” 4ohm Ferrite Racetrack SFCR Midwoofer Loudspeaker

SB ACOUSTICS SB15SFCR39-4 5×8” 4ohm Ferrite Racetrack SFCR Midwoofer Loudspeaker

Key Features: 

• Racetrack design
• Hard paper cone (made in-house)
• Optimized motor system
• Non-conductive reinforced vented coil former
• Symmetric suspension
• Low damping rubber surround
• Long life silver lead wires
• Vented chassis

Product Specifications: 

• Nominal Impedance 4 Ω
• DC resistance, Re 3.5 Ω
• Voice coil inductance, Le 0.88 mH
• Effective piston area, Sd 178 cm²
• Voice coil diameter 38.5 mm
• Voice coil height 17 mm
• Air gap height 6 mm
• Linear coil travel (p-p) 11 mm
• Magnetic flux density 0.94 T
• Magnet weight 0.54 kg
• Net weight 1.65 kg
• Free air resonance, Fs 31.5 Hz
• Sensitivity (2.83V/1m) 89.5 dB
• Mechanical Q-factor, Qms 7.9
• Electrical Q-factor, Qes 0.34
• Total Q-factor, Qts 0.33
• Moving mass incl. air,Mms 24 g
• Force factor, Bl 7.0 Tm
• Equivalent volume, Vas 47.8 liters
• Compliance, Cms 1.06 mm/N
• Mechanical loss, Rms 0.6 kg/s
• Rated power handling* 80 W

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