accuton AS250AM-4-559

Subwoofer

Nominal diameter11″ / 250 mm
Resonance21.4 Hz
Q factor0.38
Sensitivity87.7 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 87.7dB
  • Frequency response 20 - 300Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 21.4Hz
  • Mechanical quality factor QMS 7.17
  • Electrical quality factor QES 0.40
  • Total quality factor QTS 0.38

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 4Ω
  • DC resistance RE 4.0Ω
  • Inductance (1kHz) LE 0.24mH
  • VC Diameter 61mm
  • Winding material Copper
  • Former material Titanium

Magnet

  • Force factor Bl 10N/A
  • Motor constant Bl/√RE 5.01N/√W
  • Diameter 156mm
  • Height 48mm

Diaphragm

  • Effective diameter 225mm
  • Effective area SD 398cm²
  • Moving mass MMS 75.5g
  • Moving mass (without air load) MMD 70.3g
  • Material Aluminium-Sandwich

Suspensions

  • Stiffness KMS 1.37N/mm
  • Compliance CMS 730µm/N
  • Equivalent volume to the compliance VAS 165L
  • Mechanical resistance RMS 1.41N·s/m

Dimensions

  • Nominal diameter 11
  • 250mm
  • Baffle cutout diameter 230mm
  • Overall depth 150mm
  • Flange thickness 18mm
  • Mounting depth 132mm
  • Volume occupied by the driver (estimated) 2.7L
accuton AS250AM-4-559 Impedance
accuton AS250AM-4-559 SPL
accuton AS250AM-4-559 Distortion

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