P.Audio IMF HP12W V3

Low frequency

Nominal diameter12″ / 305 mm
Resonance40.4 Hz
Q factor0.70
Sensitivity90.5 dB
Linear excursion± 3 mm
Program Power400 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 90.5dB
  • Frequency response 40 - 4000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 40.4Hz
  • Mechanical quality factor QMS 3.57
  • Electrical quality factor QES 0.88
  • Total quality factor QTS 0.70

Large signal parameters

  • Maximum linear excursion (one way) xmax 3mm
  • Air volume displaced at xmax VD 159cm³
  • Power handling P 200W
  • Program power Pmax 400W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 5.2Ω
  • Inductance (1kHz) LE 0.341mH
  • VC Diameter 50mm
  • Winding height HVC 14mm
  • Winding material SV-W
  • Former material Aluminum

Magnet

  • Flux density B 0.9T
  • Force factor Bl 9.97N/A
  • Motor constant Bl/√RE 4.37N/√W
  • Air gap height HAG 8mm
  • Material Ferrite

Diaphragm

  • Effective diameter 286mm
  • Effective area SD 531cm²
  • Moving mass MMS 66.3g
  • Moving mass (without air load) MMD 57.5g
  • Material Paper

Suspensions

  • Stiffness KMS 4.27N/mm
  • Compliance CMS 234µm/N
  • Equivalent volume to the compliance VAS 93.6L
  • Mechanical resistance RMS 4.71N·s/m
  • Surround material Cloth
  • Spider material Single

Dimensions

  • Nominal diameter 12
  • 305mm
  • Overall diameter 313mm
  • Baffle cutout diameter 297mm
  • Overall depth 138mm
  • Flange thickness 9mm
  • Mounting depth 129mm
  • Volume occupied by the driver (estimated) 1.6L
  • Net weight 2.8kg
  • Frame material Heavy-duty stamp steel
P.Audio IMF HP12W V3 SPL & Impedance
P.Audio IMF HP12W V3 Dimensions

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