Peerless GBS-85N25PR03-04

Shallow Woofer

Nominal diameter3.5″ / 89 mm
Resonance120 Hz
Q factor0.91
Sensitivity83.8 dB
Linear excursion± 3.1 mm
Program Power30 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 83.8dB
  • Frequency response 100 - 8000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 120Hz
  • Mechanical quality factor QMS 5.24
  • Electrical quality factor QES 1.10
  • Total quality factor QTS 0.91

Large signal parameters

  • Maximum linear excursion xmax 3.1mm
  • Air volume displaced at xmax VD 11cm³
  • Power handling P 15W
  • Program power Pmax 30W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.2Ω
  • Inductance (1kHz) LE 0.101mH
  • VC Diameter 25.7mm

Magnet

  • Force factor Bl 2.9N/A
  • Motor constant Bl/√RE 1.62N/√W
  • Air gap height HAG 3mm
  • Material Neodymium

Diaphragm

  • Effective diameter 67mm
  • Effective area SD 35.3cm²
  • Moving mass MMS 3.77g
  • Moving mass (without air load) MMD 3.6g
  • Material Paper

Suspensions

  • Stiffness KMS 2.22N/mm
  • Compliance CMS 450µm/N
  • Equivalent volume to the compliance VAS 0.789L
  • Mechanical resistance RMS 0.54N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 3.5
  • 89mm
  • Volume occupied by the driver (estimated) 0.1L
  • Net weight 0.121kg
Peerless GBS-85N25PR03-04 SPL & Impedance
Peerless GBS-85N25PR03-04 Dimensions

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