P.Audio P-18N v3

Low frequency

Nominal diameter18″ / 457 mm
Resonance35 Hz
Q factor0.40
Sensitivity95.6 dB
Linear excursion± 9 mm
Program Power2400 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 95.6dB
  • Frequency response 35 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 35Hz
  • Mechanical quality factor QMS 9.05
  • Electrical quality factor QES 0.42
  • Total quality factor QTS 0.40

Large signal parameters

  • Maximum linear excursion xmax 9mm
  • Air volume displaced at xmax VD 1097cm³
  • Power handling P 1200W
  • Program power Pmax 2400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.2Ω
  • Inductance (1kHz) LE 0.92mH
  • VC Diameter 99.3mm
  • Winding height HVC 29mm
  • Winding material Flat Aluminium Wire
  • Former material Glass Fiber

Magnet

  • Flux density B 1.3T
  • Force factor Bl 24.1N/A
  • Motor constant Bl/√RE 10.6N/√W
  • Air gap height HAG 11mm
  • Material Neodymium

Diaphragm

  • Effective diameter 405mm
  • Effective area SD 1219cm²
  • Moving mass MMS 193g
  • Moving mass (without air load) MMD 163g
  • Material Paper

Suspensions

  • Stiffness KMS 10.3N/mm
  • Compliance CMS 97µm/N
  • Equivalent volume to the compliance VAS 180L
  • Mechanical resistance RMS 4.68N·s/m
  • Surround material Cloth
  • Spider material Double Silicone

Dimensions

  • Nominal diameter 18
  • 457mm
  • Overall diameter 467mm
  • Baffle cutout diameter 427mm
  • Overall depth 245mm
  • Flange thickness 23mm
  • Mounting depth 222mm
  • Volume occupied by the driver (estimated) 8.5L
  • Frame material Aluminium
P.Audio P-18N v3 SPL & Impedance
P.Audio P-18N v3 Dimensions

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