Tang Band W6-658I

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.3dB
• Frequency response 45 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 4.49
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 4.1mm
• Air volume displaced at xmax VD 57cm³
• Power handling P 30W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 0.118mH
• VC Diameter 25.4mm

Magnet

• Force factor Bl 6.32N/A
• Motor constant Bl/√RE 2.58N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 134mm
• Effective area SD 140cm²
• Moving mass MMS 11g
• Moving mass (without air load) MMD 9.8g
• Material Polypropylene-Mica

Suspensions

• Stiffness KMS 0.983N/mm
• Compliance CMS 1017µm/N
• Equivalent volume to the compliance VAS 28.3L
• Mechanical resistance RMS 0.69N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.65L
• Net weight 1.594kg