Tang Band W4-657SH

Full-range

Nominal diameter4″ / 102 mm
Resonance65 Hz
Q factor0.32
Sensitivity88.8 dB
Linear excursion± 3.3 mm
Program Power40 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

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 88.8dB
  • Frequency response 65 - 15000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 65Hz
  • Mechanical quality factor QMS 5.79
  • Electrical quality factor QES 0.34
  • Total quality factor QTS 0.32

Large signal parameters

  • Maximum linear excursion xmax 3.3mm
  • Air volume displaced at xmax VD 19cm³
  • Power handling P 20W
  • Program power Pmax 40W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.0Ω
  • Inductance (1kHz) LE 0.111mH
  • VC Diameter 25.4mm

Magnet

  • Force factor Bl 5.77N/A
  • Motor constant Bl/√RE 2.36N/√W
  • Air gap height HAG 6mm
  • Material Ferrite

Diaphragm

  • Effective diameter 85mm
  • Effective area SD 57cm²
  • Moving mass MMS 4.61g
  • Moving mass (without air load) MMD 4.3g
  • Material Aluminium / Magnesium

Suspensions

  • Stiffness KMS 0.771N/mm
  • Compliance CMS 1297µm/N
  • Equivalent volume to the compliance VAS 5.98L
  • Mechanical resistance RMS 0.33N·s/m
  • Surround material Rubber

Dimensions

  • Nominal diameter 4
  • 102mm
  • Volume occupied by the driver (estimated) 0.14L
Tang Band W4-657SH SPL & Impedance
Tang Band W4-657SH Dimensions

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