Goldwood GW-212/4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.8dB
• Frequency response 28 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35.8Hz
• Mechanical quality factor QMS 6.07
• Electrical quality factor QES 1.50
• Total quality factor QTS 1.20

Large signal parameters

• Maximum linear excursion xmax 2.5mm
• Air volume displaced at xmax VD 130cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.5mH
• VC Diameter 38.1mm
• Winding material Aluminum

Magnet

• Force factor Bl 4.94N/A
• Motor constant Bl/√RE 2.6N/√W
• Weight 0.567kg

Diaphragm

• Effective diameter 257mm
• Effective area SD 519cm²
• Moving mass MMS 45g
• Moving mass (without air load) MMD 36.7g
• Material Poly

Suspensions

• Stiffness KMS 2.28N/mm
• Compliance CMS 440µm/N
• Equivalent volume to the compliance VAS 167L
• Mechanical resistance RMS 1.67N·s/m
• Surround material Rolled Foam

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 305mm
• Baffle cutout diameter 286mm
• Mounting depth 121mm
• Volume occupied by the driver (estimated) 0.89L
• Net weight 2.155kg
• Frame material Stamped Steel