Peerless PMT-40N25AL02-04

Miniature

Nominal diameter1.5″ / 40 mm
Resonance241 Hz
Q factor0.47
Sensitivity81.8 dB
Linear excursion± 1.9 mm
Program Power10 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 81.8dB
  • Frequency response 100 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 241Hz
  • Mechanical quality factor QMS 2.39
  • Electrical quality factor QES 0.58
  • Total quality factor QTS 0.47

Large signal parameters

  • Maximum linear excursion xmax 1.9mm
  • Air volume displaced at xmax VD 1.6cm³
  • Power handling P 5W
  • Program power Pmax 10W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.5Ω
  • Inductance (1kHz) LE 0.07mH
  • VC Diameter 25.5mm
  • Former material Kapton

Magnet

  • Force factor Bl 2.96N/A
  • Motor constant Bl/√RE 1.58N/√W
  • Air gap height HAG 2mm

Diaphragm

  • Effective diameter 33mm
  • Effective area SD 8.5cm²
  • Moving mass MMS 1g
  • Moving mass (without air load) MMD 1g

Suspensions

  • Stiffness KMS 2.18N/mm
  • Compliance CMS 458µm/N
  • Equivalent volume to the compliance VAS 0.05L
  • Mechanical resistance RMS 0.63N·s/m

Dimensions

  • Nominal diameter 1.5
  • 40mm
  • Net weight 0.06kg
Peerless PMT-40N25AL02-04 SPL & Impedance
Peerless PMT-40N25AL02-04 Dimensions

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