SB Acoustics SB13PFCR25-8 / 5" midwoofer, 25mm VC

Features:

Vented reinforced plastic chassis
Proprietary cone material with natural fibers made in-house
Soft low damping rubber surround for improved transient response
Optimized motor system
Vented coil former for low compression
Non-resonant long life lead wires

Specs:

Nominal Impedance 8 Ω
DC resistance, Re 5.6 Ω
Voice coil inductance, Le 0.77 mH
Effective piston area, Sd 87 cm2
Voice coil diameter 25.4 mm
Voice coil height 14 mm
Air gap height 5 mm
Linear coil travel (p-p) 9 mm
Magnetic flux density 1.07 T
Magnet weight 0.36 kg
Net weight 0.91 kg
Free air resonance, Fs 45 Hz
Sensitivity (2.83 V / 1 m) 87 dB
Mechanical Q-factor, Qms 2.2
Electrical Q-factor, Qes 0.39
Total Q-factor, Qts 0.33
Moving mass incl. air, Mms 10 g
Force factor, Bl 6.2 Tm
Equivalent volume, VAS 13.4 liters
Compliance, Cms 1.25 mm/N
Mechanical loss, Rms 1.4 kg/s
Rated power handling* 40 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.