Tang Band W8Q-1071F

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.9dB
• Frequency response 27 - 200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 27Hz
• Mechanical quality factor QMS 4.60
• Electrical quality factor QES 0.36
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 552cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.851mH
• VC Diameter 49.5mm

Magnet

• Force factor Bl 14.6N/A
• Motor constant Bl/√RE 8.14N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 242mm
• Effective area SD 460cm²
• Moving mass MMS 135g
• Moving mass (without air load) MMD 131g
• Material Air Dry Paper

Suspensions

• Stiffness KMS 4.27N/mm
• Compliance CMS 234µm/N
• Equivalent volume to the compliance VAS 70.4L
• Mechanical resistance RMS 4.97N·s/m
• Surround material Rubber W-Shape

Dimensions

• Nominal size 8 x 12″
• 203 x 305mm
• Volume occupied by the driver (estimated) 2.4L
• Net weight 5.55kg