accuton AS250-8-552

Woofer

Nominal diameter11″ / 250 mm
Resonance20.3 Hz
Q factor0.35
Sensitivity87.1 dB
Linear excursion± 9 mm
Program Power600 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 87.1dB
  • Frequency response 20 - 600Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 20.3Hz
  • Mechanical quality factor QMS 3.80
  • Electrical quality factor QES 0.38
  • Total quality factor QTS 0.35

Large signal parameters

  • Maximum linear excursion xmax 9mm
  • Air volume displaced at xmax VD 358cm³
  • Power handling P 300W
  • Program power Pmax 600W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.3Ω
  • Inductance (1kHz) LE 0.42mH
  • VC Diameter 114mm
  • Winding material Copper
  • Former material Titanium

Magnet

  • Force factor Bl 14.7N/A
  • Motor constant Bl/√RE 5.44N/√W
  • Diameter 210mm
  • Height 57mm

Diaphragm

  • Effective diameter 225mm
  • Effective area SD 398cm²
  • Moving mass MMS 88.6g
  • Moving mass (without air load) MMD 83.3g
  • Material Aluminium-Sandwich

Suspensions

  • Stiffness KMS 1.45N/mm
  • Compliance CMS 690µm/N
  • Equivalent volume to the compliance VAS 156L
  • Mechanical resistance RMS 2.98N·s/m

Dimensions

  • Nominal diameter 11
  • 250mm
  • Baffle cutout diameter 230mm
  • Overall depth 159mm
  • Flange thickness 18mm
  • Mounting depth 141mm
  • Volume occupied by the driver (estimated) 3.2L
accuton AS250-8-552 Impedance
accuton AS250-8-552 SPL
accuton AS250-8-552 Distortion
accuton AS250-8-552 Dimensions

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