Tang Band W8-740P

M
P

Subwoofer

Nominal diameter8″ / 203 mm
Resonance30 Hz
Q factor0.28
Sensitivity84.3 dB
Linear excursion± 12.1 mm
Program Power240 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 84.3dB
  • Frequency response 30 - 1000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 30Hz
  • Mechanical quality factor QMS 3.69
  • Electrical quality factor QES 0.31
  • Total quality factor QTS 0.28

Large signal parameters

  • Maximum linear excursion (one way) xmax 12.1mm
  • Air volume displaced at xmax VD 266cm³
  • Power handling P 120W
  • Program power Pmax 240W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.2Ω
  • Inductance (1kHz) LE 0.837mH
  • VC Diameter 49.5mm

Magnet

  • Force factor Bl 13.7N/A
  • Motor constant Bl/√RE 7.64N/√W
  • Air gap height HAG 8mm
  • Material Ferrite

Diaphragm

  • Effective diameter 167mm
  • Effective area SD 220cm²
  • Moving mass MMS 94.3g
  • Moving mass (without air load) MMD 91.9g
  • Material Paper

Suspensions

  • Stiffness KMS 3.43N/mm
  • Compliance CMS 291µm/N
  • Equivalent volume to the compliance VAS 20L
  • Mechanical resistance RMS 4.82N·s/m
  • Surround material Foam

Dimensions

  • Nominal diameter 8
  • 203mm
  • Volume occupied by the driver (estimated) 2.5L
  • Net weight 5.8kg
Tang Band W8-740P SPL & Impedance
Tang Band W8-740P Dimensions

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