Precision Devices PD.155NR1

Woofer

Nominal diameter15″ / 381 mm
Resonance37 Hz
Q factor0.23
Sensitivity95.7 dB
Linear excursion± 12 mm
Program Power2000 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 95.7dB
  • Frequency response 45 - 2000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 37Hz
  • Mechanical quality factor QMS 6.10
  • Electrical quality factor QES 0.24
  • Total quality factor QTS 0.23

Large signal parameters

  • Maximum linear excursion xmax 12mm
  • Air volume displaced at xmax VD 1074cm³
  • Power handling P 1000W
  • Program power Pmax 2000W
  • Peak power Ppeak 4000W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.4Ω
  • Inductance (1kHz) LE 2.35mH
  • VC Diameter 127mm
  • Winding height HVC 30.5mm
  • Winding material Copper
  • Former material Glass Fibre

Magnet

  • Flux density B 1.18T
  • Force factor Bl 28.6N/A
  • Motor constant Bl/√RE 12.3N/√W
  • Air gap height HAG 13mm
  • Diameter 168mm
  • Material Neodymium

Diaphragm

  • Effective diameter 338mm
  • Effective area SD 895cm²
  • Moving mass MMS 154g
  • Moving mass (without air load) MMD 135g
  • Material Paper

Suspensions

  • Stiffness KMS 8.12N/mm
  • Compliance CMS 123µm/N
  • Equivalent volume to the compliance VAS 140L
  • Mechanical resistance RMS 5.87N·s/m
  • Surround material M Roll Poly Cotton
  • Spider material Poly Cotton

Dimensions

  • Nominal diameter 15
  • 381mm
  • Overall diameter 408mm
  • Baffle cutout diameter 356mm
  • Overall depth 201mm
  • Flange thickness 11mm
  • Mounting depth 190mm
  • Volume occupied by the driver (estimated) 5.5L
  • Net weight 10.0kg
  • Frame material Vented cast aluminium
Precision Devices PD.155NR1 Impedance
Precision Devices PD.155NR1 SPL
Precision Devices PD.155NR1 Dimensions

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