SB Acoustics SB23NBACS45-4

SB Acoustics SB23NAC45-4 8" Woofer

• Soft low damping rubber surround for improved transient response
• Geometrically reinforced aluminium cone for improved break-up control
• Shorting ring in motor system for reduced distortion
• Vented pole piece for reduced compression
• Vented cast aluminium chassis for optimum strength and low compression
• Shallow design
• Non-conducting fibre glass voice coil former for minimum damping
• CCAW voice coil for reduced moving mass
• Long life silver lead wires

Specifications

• power handling (continuous/programme) = 60 W
• resonance frequency fs = 23 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 90 dB (2,83V; 1m)
• DC resistance Re = 3,3 Ohm
• force factor BL = 5,4 N/A
• voice coil inductance L = 0,27 mH
• effective piston radiating area Sd = 216 cm²
• effective mechanical mass incl. air load mms = 32 g
• equivalent volume of compliance Vas = 95 l
• total Q factor Qts = 0.33 (Qms=5.4, Qes=0.35)
• voice coil diameter = 45,5 mm
• mounting diameter d = 198 mm
• overall diameter d = 234 mm
• mounting depth (not countersunk) t = 81 mm