Tang Band W8-1747A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.7dB
• Frequency response 30 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 2.15
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 176cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.604mH
• VC Diameter 38.5mm

Magnet

• Force factor Bl 9.97N/A
• Motor constant Bl/√RE 5.25N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 167mm
• Effective area SD 220cm²
• Moving mass MMS 69.9g
• Moving mass (without air load) MMD 67.5g
• Material Aluminium

Suspensions

• Stiffness KMS 2.73N/mm
• Compliance CMS 367µm/N
• Equivalent volume to the compliance VAS 23.2L
• Mechanical resistance RMS 6.12N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 8″
• 203mm
• Volume occupied by the driver (estimated) 1.6L
• Net weight 3.75kg