Goldwood GW-412D

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.5dB
• Frequency response 33 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 37.8Hz
• Mechanical quality factor QMS 5.76
• Electrical quality factor QES 0.83
• Total quality factor QTS 0.73

Large signal parameters

• Maximum linear excursion xmax 2.5mm
• Air volume displaced at xmax VD 132cm³
• Power handling P 130W
• Program power Pmax 260W

Voice Coil

• Nominal impedance Z 2 x 8Ω
• DC resistance (in series) RE 13.6Ω
• Inductance (1kHz, in series) LE 0.2mH
• VC Diameter 38.1mm
• Winding material Aluminum

Magnet

• Force factor (in series) Bl 15.8N/A
• Motor constant Bl/√RE 4.27N/√W
• Weight 0.85kg

Diaphragm

• Effective diameter 259mm
• Effective area SD 526cm²
• Moving mass MMS 63.5g
• Moving mass (without air load) MMD 55.1g
• Material Poly

Suspensions

• Stiffness KMS 3.58N/mm
• Compliance CMS 279µm/N
• Equivalent volume to the compliance VAS 109L
• Mechanical resistance RMS 2.62N·s/m
• Surround material Rolled Foam

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 305mm
• Baffle cutout diameter 279mm
• Mounting depth 132mm
• Volume occupied by the driver (estimated) 0.98L
• Net weight 2.359kg
• Frame material Stamped Steel