SB Acoustics SB12NRXF25-8

SB Acoustics SB12NRXF25-8 4" Woofer

• Vented cast aluminum chassis for optimum strength and low compression
• Proprietary cone material with natural fibers made in-house
• Soft low damping rubber surround for improved transient response
• Non-conducting fiber glass voice coil former for minimum damping
• Extended copper sleeve on pole piece for low inductance and low distortion
• CCAW voice coil for reduced moving mass
• Long life silver lead wires
• Vented pole piece for reduced compression

Specifications

• power handling (continuous/programme) = 30 W
• frequency range = 80-12000 Hz
• resonance frequency fs = 63 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 85 dB (2,83V; 1m)
• DC resistance Re = 6,4 Ohm
• force factor BL = 5,5 N/A
• voice coil inductance L = 0,34 mH
• effective piston radiating area Sd = 50 cm²
• effective mechanical mass incl. air load mms = 5,5 g
• equivalent volume of compliance Vas = 4,2 l
• total Q factor Qts = 0,42 (Qms=5,4, Qes=0,46)
• voice coil diameter = 25,4 mm
• mounting diameter d = 95 mm
• overall diameter d = 123 mm
• mounting depth (not countersunk) t = 60,61 mm