Tang Band WQ-1814SB

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.1dB
• Frequency response 35 - 700Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 7.09
• Electrical quality factor QES 0.53
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 200cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.315mH
• VC Diameter 127.5mm

Magnet

• Force factor Bl 14.8N/A
• Motor constant Bl/√RE 8N/√W
• Air gap height HAG 8mm
• Material Neodymium

Diaphragm

• Effective diameter 252mm
• Effective area SD 500cm²
• Moving mass MMS 130g
• Moving mass (without air load) MMD 122g
• Material Polypropylene

Suspensions

• Stiffness KMS 8.82N/mm
• Compliance CMS 113µm/N
• Equivalent volume to the compliance VAS 40.2L
• Mechanical resistance RMS 4.02N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 305mm
• Volume occupied by the driver (estimated) 2.4L