audison Prima APS 8 R

2x4Ω

Shallow Subwoofer

Nominal diameter8″ / 200 mm
Resonance32 Hz
Q factor0.41
Sensitivity84.4 dB
Linear excursion± 8.8 mm
Program Power500 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 84.4dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 32Hz
  • Mechanical quality factor QMS 5.10
  • Electrical quality factor QES 0.43
  • Total quality factor QTS 0.41

Large signal parameters

  • Maximum linear excursion (one way) xmax 8.8mm
  • Maximum excursion before damage xlim 16.5mm
  • Air volume displaced at xmax VD 209cm³
  • Power handling P 250W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.7Ω
  • Inductance (1kHz) LE 1.45mH
  • VC Diameter 40mm

Magnet

  • Force factor Bl 11.5N/A
  • Motor constant Bl/√RE 5.98N/√W
  • Diameter 120mm
  • Height 28mm
  • Material HIGH DENSITY FLUX FERRITE

Diaphragm

  • Effective diameter 174mm
  • Effective area SD 238cm²
  • Moving mass MMS 80g
  • Moving mass (without air load) MMD 77.3g
  • Material WATER REPELLENT PRESSED PAPER

Suspensions

  • Stiffness KMS 3.03N/mm
  • Compliance CMS 330µm/N
  • Equivalent volume to the compliance VAS 26.5L
  • Mechanical resistance RMS 3.15N·s/m

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall diameter 222mm
  • Baffle cutout diameter 187mm
  • Overall depth 95mm
  • Flange thickness 16mm
  • Mounting depth 79mm
  • Volume occupied by the driver 0.67L
  • Net weight 3.04kg

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