SB Acoustics SB34SWPL76-4 12'' Subwoofer - 4 ohms

Features

• Long stroke design
• Linear high stability suspension
• Low damping rubber surround
• 3’’ copper voice coil
• Non-conducting reinforced fibre glass coil former
• Very stiff hard paper cone (made in-house)
• Vented cast aluminium chassis
• Large vented motor system and vented coilformer
• Long life silver lead wires

Specifications

• Nominal Impedance 4 Ω
• DC resistance, Re 3.5 Ω
• Voice coil inductance, Le 5.3 mH
• Effective piston area, Sd 458 cm²
• Voice coil diameter 76 mm
• Voice coil height 38 mm
• Air gap height 8 mm
• Linear coil travel (p-p) 30 mm
• Magnetic flux density 0.62 T
• Magnet weight 2.4 kg
• Net weight 7.68 kg
• Free air resonance, Fs 19 Hz
• Sensitivity (2.83V/1m) 85 dB
• Mechanical Q-factor, Qms 7.7
• Electrical Q-factor, Qes 0.33
• Total Q-factor, Qts 0.32
• Moving mass incl. air,Mms 264 g
• Force factor, Bl 18.3 Tm
• Equivalent volume, Vas 79 liters
• Compliance, Cms 0.27 mm/N
• Mechanical loss, Rms 4.1 kg/s
• Rated power handling* 300 W

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