Goldwood GW-215/40/8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.7dB
• Frequency response 20 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30.5Hz
• Mechanical quality factor QMS 5.15
• Electrical quality factor QES 1.38
• Total quality factor QTS 1.09

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 288cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.2Ω
• Inductance (1kHz) LE 0.835mH
• VC Diameter 38.1mm
• Winding material Aluminum

Magnet

• Force factor Bl 9.93N/A
• Motor constant Bl/√RE 3.71N/√W
• Weight 1.134kg

Diaphragm

• Effective diameter 324mm
• Effective area SD 823cm²
• Moving mass MMS 68g
• Moving mass (without air load) MMD 51.5g
• Material Poly

Suspensions

• Stiffness KMS 3.65N/mm
• Compliance CMS 274µm/N
• Equivalent volume to the compliance VAS 261L
• Mechanical resistance RMS 2.53N·s/m
• Surround material Rolled Foam

Dimensions

• Nominal diameter 15″
• 381mm
• Overall diameter 381mm
• Baffle cutout diameter 356mm
• Mounting depth 137mm
• Volume occupied by the driver (estimated) 1L
• Net weight 2.438kg
• Frame material Stamped Steel