Tang Band W4-1757SB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.7dB
• Frequency response 75 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 75Hz
• Mechanical quality factor QMS 1.55
• Electrical quality factor QES 0.65
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 3mm
• Air volume displaced at xmax VD 17cm³
• Power handling P 30W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 6Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.019mH
• VC Diameter 38.5mm

Magnet

• Force factor Bl 4.51N/A
• Motor constant Bl/√RE 1.91N/√W
• Air gap height HAG 11mm
• Material Neodymium

Diaphragm

• Effective diameter 85mm
• Effective area SD 57cm²
• Moving mass MMS 4.99g
• Moving mass (without air load) MMD 4.7g
• Material Sandwich

Suspensions

• Stiffness KMS 1.1N/mm
• Compliance CMS 907µm/N
• Equivalent volume to the compliance VAS 4.19L
• Mechanical resistance RMS 1.52N·s/m
• Surround material Foam Rubber

Dimensions

• Nominal diameter 4″
• 102mm
• Volume occupied by the driver (estimated) 0.48L
• Net weight 1.193kg