Peerless PLS-65F25AL04-04

Full-range

Nominal diameter2.5″ / 64 mm
Resonance120 Hz
Q factor0.78
Sensitivity81.4 dB
Linear excursion± 2.7 mm
Program Power50 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 81.4dB
  • Frequency response 100 - 10000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 120Hz
  • Mechanical quality factor QMS 5.06
  • Electrical quality factor QES 0.92
  • Total quality factor QTS 0.78

Large signal parameters

  • Maximum linear excursion xmax 2.7mm
  • Air volume displaced at xmax VD 5.6cm³
  • Power handling P 25W
  • Program power Pmax 50W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.5Ω
  • Inductance (1kHz) LE 0.053mH
  • VC Diameter 25.7mm

Magnet

  • Force factor Bl 2.47N/A
  • Motor constant Bl/√RE 1.32N/√W
  • Air gap height HAG 3mm
  • Material Ferrite

Diaphragm

  • Effective diameter 52mm
  • Effective area SD 21.2cm²
  • Moving mass MMS 2.23g
  • Moving mass (without air load) MMD 2.2g
  • Material Aluminum

Suspensions

  • Stiffness KMS 1.19N/mm
  • Compliance CMS 840µm/N
  • Equivalent volume to the compliance VAS 0.537L
  • Mechanical resistance RMS 0.33N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 2.5
  • 64mm
  • Volume occupied by the driver (estimated) 0.12L
  • Net weight 0.328kg
  • Frame material Pressed Steel
Peerless PLS-65F25AL04-04 SPL & Impedance
Peerless PLS-65F25AL04-04 Dimensions

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Peerless PLS-P830984 Full-range

Peerless PLS-P830984

8 Ω
2.5 Full-range
fS110 Hz
SD21.2 cm²
80 - 16000 Hz
QTS0.75
xmax3.4 mm
SPL1W81.6 dB
Bl/√RE1.37
Pmax50 W