Tang Band W4-1337SDF

SD
SDF

Full-range

Nominal diameter4″ / 102 mm
Resonance70 Hz
Q factor0.34
Sensitivity89.6 dB
Linear excursion± 2.5 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 89.6dB
  • Frequency response 70 - 20000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 70Hz
  • Mechanical quality factor QMS 2.04
  • Electrical quality factor QES 0.40
  • Total quality factor QTS 0.34

Large signal parameters

  • Maximum linear excursion xmax 2.5mm
  • Air volume displaced at xmax VD 14cm³
  • Power handling P 25W
  • Program power Pmax 50W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.3Ω
  • Inductance (1kHz) LE 0.027mH
  • VC Diameter 25.4mm

Magnet

  • Force factor Bl 5.32N/A
  • Motor constant Bl/√RE 2.12N/√W
  • Air gap height HAG 10mm
  • Material Ferrite

Diaphragm

  • Effective diameter 85mm
  • Effective area SD 57cm²
  • Moving mass MMS 3.99g
  • Moving mass (without air load) MMD 3.7g
  • Material Titanium

Suspensions

  • Stiffness KMS 0.822N/mm
  • Compliance CMS 1216µm/N
  • Equivalent volume to the compliance VAS 5.61L
  • Mechanical resistance RMS 0.86N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 4
  • 102mm
  • Volume occupied by the driver (estimated) 0.74L
  • Net weight 1.803kg
Tang Band W4-1337SDF SPL & Impedance
Tang Band W4-1337SDF Dimensions

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