Goldwood GW-215/8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.5dB
• Frequency response 22 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 29.5Hz
• Mechanical quality factor QMS 7.09
• Electrical quality factor QES 2.69
• Total quality factor QTS 1.95

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 288cm³
• Power handling P 135W
• Program power Pmax 250W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.1Ω
• Inductance (1kHz) LE 0.9mH
• VC Diameter 38.1mm
• Winding material Aluminum

Magnet

• Force factor Bl 6.09N/A
• Motor constant Bl/√RE 2.28N/√W
• Weight 0.567kg

Diaphragm

• Effective diameter 324mm
• Effective area SD 823cm²
• Moving mass MMS 75.7g
• Moving mass (without air load) MMD 59.2g
• Material Poly

Suspensions

• Stiffness KMS 2.6N/mm
• Compliance CMS 385µm/N
• Equivalent volume to the compliance VAS 367L
• Mechanical resistance RMS 1.98N·s/m
• Surround material Rolled Foam

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 381mm
• Baffle cutout diameter 356mm
• Mounting depth 130mm
• Volume occupied by the driver (estimated) 0.96L
• Net weight 2.325kg
• Frame material Stamped Steel