SB Acoustics SB15SFCR39-8 5x8'' Paper Cone Racetrack Woofer

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

Specifications

• nominal Impedance 8 ?
• DC resistance, Re 6.2 ?
• Voice coil inductance, Le 1.3 mH
• Effective piston area, Sd 178 cm²
• Voice coil diameter 38.5 mm
• Voice coil height 16 mm
• Air gap height 6 mm
• Linear coil travel (p-p) 10 mm
• Magnetic flux density 0.94 T
• Magnet weight 0.54 kg
• Net weight 1.65 kg
• Free air resonance, Fs 32 Hz
• Sensitivity (2.83V/1m) 87.0 dB
• Mechanical Q-factor, Qms 7.11
• Electrical Q-factor, Qes 0.45
• Total Q-factor, Qts 0.42
• Moving mass incl. air,Mms 23 g
• Force factor, Bl 8.0 Tm
• Equivalent volume, Vas 48.3 liters
• Compliance, Cms 1.08 mm/N
• Mechanical loss, Rms 0.65 kg/s
• Rated power handling* 80 W

* IEC 268-5, T/S parameters measured on drive units that are broken in.