Peerless PMT-40N25AL17-04

Full-range

Nominal diameter1.5″ / 42 mm
Resonance170 Hz
Q factor0.36
Sensitivity81.3 dB
Linear excursion± 2.1 mm
Program Power10 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 81.3dB
  • Frequency response 200 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 170Hz
  • Mechanical quality factor QMS 1.74
  • Electrical quality factor QES 0.45
  • Total quality factor QTS 0.36

Large signal parameters

  • Maximum linear excursion xmax 2.1mm
  • Air volume displaced at xmax VD 1.7cm³
  • Power handling P 5W
  • Program power Pmax 10W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.3Ω
  • Inductance (1kHz) LE 0.091mH
  • VC Diameter 25.5mm

Magnet

  • Force factor Bl 2.8N/A
  • Motor constant Bl/√RE 1.54N/√W
  • Air gap height HAG 2.5mm
  • Material Neodymium

Diaphragm

  • Effective diameter 33mm
  • Effective area SD 8.3cm²
  • Moving mass MMS 0.995g
  • Moving mass (without air load) MMD 1g
  • Material Aluminum

Suspensions

  • Stiffness KMS 1.12N/mm
  • Compliance CMS 890µm/N
  • Equivalent volume to the compliance VAS 0.087L
  • Mechanical resistance RMS 0.61N·s/m

Dimensions

  • Nominal diameter 1.5
  • 42mm
  • Volume occupied by the driver (estimated) 30L
  • Net weight 60.7kg
Peerless PMT-40N25AL17-04 SPL & Impedance
Peerless PMT-40N25AL17-04 Dimensions

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