SB Acoustics SB12PACR25-4 Alu

SB Acoustics SB12PACR25-4 Alu 4" Woofer

• Vented reinforced plastic chassis
• Anodised aluminium cone
• Low damping rubber surround
• Large vented motor system
• Long stroke linear suspension
• Light weight CCAW voice coil
• Non-conducting fibreglass coil former
• Non-resonant long life lead wires

Specifications

• power handling (continuous/programme) = 30 W
• frequency range = 60-12000 Hz
• resonance frequency fs = 52.5 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 87 dB (2,83V; 1m)
• DC resistance Re = 3.1 Ohm
• force factor BL = 4.35 N/A
• voice coil inductance L = 0.25 mH
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 6.1 g
• equivalent volume of compliance Vas = 5.3 l
• total Q factor Qts = 0.31 (Qms=5.0, Qes=0.33)
• voice coil diameter = 25,4 mm
• mounting diameter d = 102 mm
• overall diameter d = 108.9mm
• mounting depth (not countersunk) t = 59 mm