Goldwood GW-406D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.7dB
• Frequency response 59 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 60.3Hz
• Mechanical quality factor QMS 4.13
• Electrical quality factor QES 0.75
• Total quality factor QTS 0.63

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 27cm³
• Power handling P 60W
• Program power Pmax 90W

Voice Coil

• Nominal impedance Z 2 x 8Ω
• DC resistance (in series) RE 14.0Ω
• Inductance (1kHz, in series) LE 1.6mH
• VC Diameter 25.4mm
• Winding material Aluminum

Magnet

• Force factor (in series) Bl 9.9N/A
• Motor constant Bl/√RE 2.64N/√W
• Weight 0.283kg

Diaphragm

• Effective diameter 132mm
• Effective area SD 136cm²
• Moving mass MMS 13.7g
• Moving mass (without air load) MMD 12.5g
• Material Poly

Suspensions

• Stiffness KMS 1.97N/mm
• Compliance CMS 508µm/N
• Equivalent volume to the compliance VAS 13.2L
• Mechanical resistance RMS 1.26N·s/m
• Surround material Rolled Foam

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 165mm
• Baffle cutout diameter 146mm
• Mounting depth 83mm
• Volume occupied by the driver (estimated) 0.6L
• Net weight 1.474kg
• Frame material Stamped Steel