Goldwood GW-15PC/4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.3dB
• Frequency response 25 - 2100Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33.3Hz
• Mechanical quality factor QMS 3.40
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.43

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 494cm³
• Power handling P 275W
• Program power Pmax 550W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.7Ω
• Inductance (1kHz) LE 2.4mH
• VC Diameter 50.8mm
• Winding material Aluminum

Magnet

• Force factor Bl 16.6N/A
• Motor constant Bl/√RE 8.63N/√W
• Weight 2.126kg

Diaphragm

• Effective diameter 324mm
• Effective area SD 824cm²
• Moving mass MMS 173g
• Moving mass (without air load) MMD 157g
• Material Poly-Mica

Suspensions

• Stiffness KMS 7.61N/mm
• Compliance CMS 131µm/N
• Equivalent volume to the compliance VAS 125L
• Mechanical resistance RMS 10.7N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 15″
• 387mm
• Overall diameter 387mm
• Baffle cutout diameter 349mm
• Mounting depth 140mm
• Volume occupied by the driver (estimated) 1L
• Net weight 2.495kg
• Frame material Die Cast Aluminum