accuton S220-6-221

Woofer

Nominal diameter8″ / 220 mm
Resonance22.1 Hz
Q factor0.37
Sensitivity86.5 dB
Linear excursion± 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 86.5dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 22.1Hz
  • Mechanical quality factor QMS 5.73
  • Electrical quality factor QES 0.39
  • Total quality factor QTS 0.37

Large signal parameters

  • Maximum linear excursion xmax 5mm
  • Air volume displaced at xmax VD 112cm³
  • Power handling P 150W
  • Program power Pmax 300W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.9Ω
  • Inductance (1kHz) LE 0.81mH
  • VC Diameter 38mm
  • Winding material Copper
  • Former material Titanium

Magnet

  • Force factor Bl 8.28N/A
  • Motor constant Bl/√RE 3.41N/√W
  • Diameter 120mm
  • Height 42mm

Diaphragm

  • Effective diameter 169mm
  • Effective area SD 224cm²
  • Moving mass MMS 32.8g
  • Moving mass (without air load) MMD 30.3g

Suspensions

  • Stiffness KMS 0.633N/mm
  • Compliance CMS 1580µm/N
  • Equivalent volume to the compliance VAS 113L
  • Mechanical resistance RMS 0.79N·s/m

Dimensions

  • Nominal diameter 8
  • 220mm
  • Overall diameter 220mm
  • Baffle cutout diameter 191mm
  • Overall depth 105mm
  • Flange thickness 9mm
  • Mounting depth 96mm
  • Volume occupied by the driver (estimated) 1L
accuton S220-6-221 Impedance
accuton S220-6-221 SPL
accuton S220-6-221 Dimensions

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