SB Acoustics SB42FHCL75-6 15" Honeycomb cone SubWoofer

SB Acoustics

SB Acoustics SB42FHCL75-6 15'' Honeycomb cone Subwoofer


  • Light weight rigid honeycomb cone (hard paper honeycomb with fiber glass skin layers)
  • 3″ copper voice coil for improved power handling
  • Long life silver lead wires
  • Vented pole piece for minimum compression
  • Vented cast aluminum chassis for optimum strength and low compression
  • Low damping rubber surround for improved dynamic linearity
  • Non-conducting fiber glass voice coil former for minimum damping
  • Large motor system
Product Specifications
Nominal Impedance 6 ohms
DC resistance, Re 4.6 ohms
voice coil inductance, Le 2.1 mH
Free air resonance,Fs 18.4 Hz
Sensitivity(2.83V/1m) 93dB
Mechanical Q-factor,Qms 7.4
Electrical Q-factor,Qes 0.32
Total Q-factor,Qts 0.31
Moving mass incl. air,Mms 166g
Force factor,BI 16.7Tm
Equivalent volume,Vas 462 liters
Compliance,Cms 0.45mm/N
Mechanical loss,Rms 2.6 Kg/s
Rated power handling* 300W
Effective piston area,Sd 850 cm²
Voice coil diameter 75.6 mm
Voice coil height 31 mm
Air gap height 8 mm
Linear coil travel(p-p) 23 mm
Magnetic flux density 1.1 T
Magnetic weight 3.6 Kg
Net weight 10.2 Kg

Frequency and Impedance Graph:

SB Acoustics SB42FHCL75-6 15" Graph


SB Acoustics SB42FHCL75-6 15" subwoofer drawings

Possible box alignments:

  • Sealed box of 3.0 cubic feet with stuffing has and F3 of 45Hz and F6 of 34Hz
  • Vented box of 5.0 cubic feet with stuffing and 4" diameter vent by 7" long has an F3 of 32Hz