SB Acoustics SB15NAC30-4

SB Acoustics SB15NAC30-4

• Vented cast aluminum chassis for optimum strength and low compression
• Geometrically reinforced aluminum cone for optimum piston operation
  and reduced break-up
• Soft low damping rubber surround for improved transient response
• Non-conducting fibre 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) = 50 W
• resonance frequency fs = 35 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 88.5 dB (2,83V; 1m)
• DC resistance Re = 3.1 Ohm
• force factor BL = 4.8 N/A
• voice coil inductance L = 0,12 mH
• effective piston radiating area Sd = 82 cm²
• effective mechanical mass incl. air load mms = 10.8 g
• equivalent volume of compliance Vas = 18.3 l
• total Q factor Qts = 0.30 (Qms=5.65, Qes=0.32)
• voice coil diameter = 30,5 mm
• mounting diameter d = 123.9 mm
• overall diameter d = 150 mm
• mounting depth (not countersunk) t = 68.3 mm