Peerless GBX-65X140N25AL00-04

Woofer

Nominal size2.5x5.5″ / 65x140 mm
Resonance64 Hz
Q factor0.78
Sensitivity77.7 dB
Linear excursion± 8 mm
Program Power60 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 77.7dB
  • Frequency response 80 - 500Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 64Hz
  • Mechanical quality factor QMS 6.07
  • Electrical quality factor QES 0.90
  • Total quality factor QTS 0.78

Large signal parameters

  • Maximum linear excursion xmax 8mm
  • Air volume displaced at xmax VD 49cm³
  • Power handling P 30W
  • Program power Pmax 60W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.9Ω
  • Inductance (1kHz) LE 0.688mH
  • VC Diameter 25.7mm

Magnet

  • Force factor Bl 7.13N/A
  • Motor constant Bl/√RE 3.61N/√W
  • Air gap height HAG 6mm
  • Material Neodymium

Diaphragm

  • Effective diameter 89mm
  • Effective area SD 61.7cm²
  • Moving mass MMS 29.1g
  • Moving mass (without air load) MMD 29g

Suspensions

  • Stiffness KMS 4.76N/mm
  • Compliance CMS 210µm/N
  • Equivalent volume to the compliance VAS 1.13L
  • Mechanical resistance RMS 1.93N·s/m

Dimensions

  • Nominal size 2.5 x 5.5
  • 65 x 140mm
  • Volume occupied by the driver (estimated) 238L
  • Net weight 423.0kg
Peerless GBX-65X140N25AL00-04 SPL & Impedance
Peerless GBX-65X140N25AL00-04 Dimensions

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