Tang Band W5-1138SMF

• Sensitivity (1W, 1m, infinite baffle) SPL1W 81.5dB
• Frequency response 45 - 15000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 3.56
• Electrical quality factor QES 0.57
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 9.3mm
• Air volume displaced at xmax VD 87cm³
• Power handling P 40W
• Program power Pmax 80W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.34mH
• VC Diameter 32mm

Magnet

• Force factor Bl 7.17N/A
• Motor constant Bl/√RE 3.89N/√W
• Air gap height HAG 5mm
• Material Ferrite

Diaphragm

• Effective diameter 109mm
• Effective area SD 94cm²
• Moving mass MMS 28.8g
• Moving mass (without air load) MMD 28.2g
• Material Paper

Suspensions

• Stiffness KMS 2.71N/mm
• Compliance CMS 369µm/N
• Equivalent volume to the compliance VAS 4.85L
• Mechanical resistance RMS 2.29N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 5″
• 127mm
• Volume occupied by the driver (estimated) 0.72L
• Net weight 1.77kg