Goldwood GW-12PC/8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89dB
• Frequency response 20 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33Hz
• Mechanical quality factor QMS 3.83
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 247cm³
• Power handling P 225W
• Program power Pmax 450W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.1Ω
• Inductance (1kHz) LE 2.1mH
• VC Diameter 50.8mm
• Winding material Aluminum

Magnet

• Force factor Bl 15.7N/A
• Motor constant Bl/√RE 5.89N/√W
• Weight 1.417kg

Diaphragm

• Effective diameter 251mm
• Effective area SD 494cm²
• Moving mass MMS 93.1g
• Moving mass (without air load) MMD 85.1g
• Material Poly-Mica

Suspensions

• Stiffness KMS 3.99N/mm
• Compliance CMS 251µm/N
• Equivalent volume to the compliance VAS 85.9L
• Mechanical resistance RMS 5.04N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 311mm
• Overall diameter 311mm
• Baffle cutout diameter 283mm
• Mounting depth 137mm
• Volume occupied by the driver (estimated) 1L
• Net weight 2.438kg
• Frame material Die Cast Aluminum