Goldwood GW-8PC/4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB
• Frequency response 25 - 2800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 44.2Hz
• Mechanical quality factor QMS 5.98
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.45

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 93cm³
• Power handling P 165W
• Program power Pmax 330W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.7Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 38.1mm
• Winding material Aluminum

Magnet

• Force factor Bl 8.73N/A
• Motor constant Bl/√RE 4.54N/√W
• Weight 0.85kg

Diaphragm

• Effective diameter 162mm
• Effective area SD 206cm²
• Moving mass MMS 36.3g
• Moving mass (without air load) MMD 34.1g
• Material Poly-Mica

Suspensions

• Stiffness KMS 2.8N/mm
• Compliance CMS 357µm/N
• Equivalent volume to the compliance VAS 21.3L
• Mechanical resistance RMS 1.69N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 203mm
• Baffle cutout diameter 181mm
• Mounting depth 94mm
• Volume occupied by the driver (estimated) 0.68L
• Net weight 1.674kg
• Frame material Die Cast Aluminum