Tang Band W3-1878

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.4dB
• Frequency response 75 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 75Hz
• Mechanical quality factor QMS 1.67
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.28

Large signal parameters

• Maximum linear excursion xmax 4.2mm
• Air volume displaced at xmax VD 13cm³
• Power handling P 12W
• Program power Pmax 25W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.023mH
• VC Diameter 20.4mm

Magnet

• Force factor Bl 4.3N/A
• Motor constant Bl/√RE 1.69N/√W
• Air gap height HAG 12mm
• Material Neodymium

Diaphragm

• Effective diameter 64mm
• Effective area SD 32cm²
• Moving mass MMS 2g
• Moving mass (without air load) MMD 1.9g
• Material Paper

Suspensions

• Stiffness KMS 0.472N/mm
• Compliance CMS 2117µm/N
• Equivalent volume to the compliance VAS 3.08L
• Mechanical resistance RMS 0.56N·s/m
• Surround material Foam Rubber

Dimensions

• Nominal diameter 3″
• 76mm
• Volume occupied by the driver (estimated) 0.31L
• Net weight 0.807kg