SB Acoustics SB23MFCL45-8

Subwoofer

Nominal diameter8″ / 203 mm
Resonance28.5 Hz
Q factor0.43
Sensitivity84.4 dB
Linear excursion± 10.5 mm
Program Power300 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 84.4dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 28.5Hz
  • Mechanical quality factor QMS 7.30
  • Electrical quality factor QES 0.46
  • Total quality factor QTS 0.43

Large signal parameters

  • Maximum linear excursion xmax 10.5mm
  • Air volume displaced at xmax VD 221cm³
  • Power handling P 150W
  • Program power Pmax 300W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz) LE 1.02mH
  • VC Diameter 45.5mm
  • Winding height HVC 29.2mm
  • Winding material Copper
  • Former material Glass Fiber

Magnet

  • Flux density B 1.03T
  • Force factor Bl 11.3N/A
  • Motor constant Bl/√RE 4.54N/√W
  • Air gap height HAG 8mm
  • Weight 2.0kg

Diaphragm

  • Effective diameter 164mm
  • Effective area SD 210cm²
  • Moving mass MMS 53g
  • Moving mass (without air load) MMD 50.8g
  • Material Polypropylene

Suspensions

  • Stiffness KMS 1.7N/mm
  • Compliance CMS 590µm/N
  • Equivalent volume to the compliance VAS 37L
  • Mechanical resistance RMS 1.3N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 8
  • 203mm
  • Volume occupied by the driver (estimated) 2L
  • Net weight 4.7kg
  • Frame material Cast aluminium
SB Acoustics SB23MFCL45-8 SPL & Impedance
SB Acoustics SB23MFCL45-8 Dimensions

Similar subwoofers to SB Acoustics SB23MFCL45-8

Wavecor SW215WA01 Woofer

Wavecor SW215WA01

4 Ω
8.5 Woofer
fS30 Hz
SD206 cm²
30 - 500 Hz
QTS0.44
xmax10 mm
SPL1W84.6 dB
Bl/√RE4.65
Pmax400 W
Dayton Audio RS225-8 Woofer

Dayton Audio RS225-8

8 Ω
8 Woofer
fS28.3 Hz
SD214 cm²
28 - 2400 Hz
QTS0.38
xmax7 mm
SPL1W85.6 dB
Bl/√RE3.55
Pmax160 W
Aurum Cantus AC-250SW Woofer

Aurum Cantus AC-250SW

4 Ω
10 Woofer
fS35 Hz
SD330 cm²
35 - 2500 Hz
QTS0.45
xmax8 mm
SPL1W84.1 dB
Bl/√RE5.32
Pmax360 W