Precision Devices PD.185N02

Subwoofer

Nominal diameter18″ / 460 mm
Resonance35.2 Hz
Q factor0.24
Sensitivity97.1 dB
Linear excursion± 12 mm
Program Power2200 W
Discontinued
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 97.1dB
  • Frequency response 35 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 35.2Hz
  • Mechanical quality factor QMS 22.06
  • Electrical quality factor QES 0.25
  • Total quality factor QTS 0.24

Large signal parameters

  • Maximum linear excursion xmax 12mm
  • Maximum excursion before damage xlim 22mm
  • Air volume displaced at xmax VD 1397cm³
  • Power handling P 1100W
  • Program power Pmax 2200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 4.7Ω
  • Inductance (1kHz) LE 0.57mH
  • VC Diameter 127mm
  • Winding height HVC 28mm
  • Winding material Copper
  • Former material Glass Fibre

Magnet

  • Flux density B 1.18T
  • Force factor Bl 30.6N/A
  • Motor constant Bl/√RE 14.1N/√W
  • Air gap height HAG 12mm
  • Material Neodymium

Diaphragm

  • Effective diameter 385mm
  • Effective area SD 1164cm²
  • Moving mass MMS 220g
  • Moving mass (without air load) MMD 191g
  • Material Paper

Suspensions

  • Stiffness KMS 11.1N/mm
  • Compliance CMS 90µm/N
  • Equivalent volume to the compliance VAS 178L
  • Mechanical resistance RMS 2.21N·s/m

Dimensions

  • Nominal diameter 18
  • 460mm
  • Overall diameter 474mm
  • Baffle cutout diameter 415mm
  • Overall depth 185mm
  • Flange thickness 15mm
  • Mounting depth 170mm
  • Volume occupied by the driver (estimated) 6.2L
  • Net weight 11.5kg
Precision Devices PD.185N02 SPL & Impedance

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