SB Acoustics SB15CAC30-4

Mid Bass

Nominal diameter5″ / 127 mm
Resonance32.5 Hz
Q factor0.31
Sensitivity84.8 dB
Linear excursion± 5 mm
Program Power100 W
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 84.8dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 32.5Hz
  • Mechanical quality factor QMS 4.61
  • Electrical quality factor QES 0.34
  • Total quality factor QTS 0.31

Large signal parameters

  • Maximum linear excursion xmax 5mm
  • Air volume displaced at xmax VD 41cm³
  • Power handling P 50W
  • Program power Pmax 100W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.1Ω
  • Inductance (1kHz) LE 0.12mH
  • VC Diameter 30.5mm
  • Winding height HVC 15mm
  • Winding material Copper Clad Aluminium
  • Former material Glass Fiber

Magnet

  • Flux density B 1T
  • Force factor Bl 4.6N/A
  • Motor constant Bl/√RE 2.61N/√W
  • Air gap height HAG 5mm
  • Weight 0.54kg

Diaphragm

  • Effective diameter 102mm
  • Effective area SD 82cm²
  • Moving mass MMS 11.3g
  • Moving mass (without air load) MMD 10.8g
  • Material Ceramic

Suspensions

  • Stiffness KMS 0.472N/mm
  • Compliance CMS 2120µm/N
  • Equivalent volume to the compliance VAS 20.2L
  • Mechanical resistance RMS 0.5N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 5
  • 127mm
  • Volume occupied by the driver (estimated) 0.59L
  • Net weight 1.46kg
  • Frame material Cast aluminium
SB Acoustics SB15CAC30-4 SPL & Impedance
SB Acoustics SB15CAC30-4 Dimensions

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fS32 Hz
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