Goldwood GW-1858

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.3dB
• Frequency response 20 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30.3Hz
• Mechanical quality factor QMS 6.70
• Electrical quality factor QES 1.30
• Total quality factor QTS 1.10

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 255cm³
• Power handling P 220W
• Program power Pmax 340W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.3Ω
• Inductance (1kHz) LE 0.6mH
• VC Diameter 63.5mm
• Winding material Aluminum

Magnet

• Force factor Bl 9.8N/A
• Motor constant Bl/√RE 4.26N/√W
• Weight 1.417kg

Diaphragm

• Effective diameter 403mm
• Effective area SD 1277cm²
• Moving mass MMS 121g
• Moving mass (without air load) MMD 90.2g
• Material Polymer

Suspensions

• Stiffness KMS 4.37N/mm
• Compliance CMS 229µm/N
• Equivalent volume to the compliance VAS 524L
• Mechanical resistance RMS 3.43N·s/m

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 457mm
• Baffle cutout diameter 419mm
• Mounting depth 200mm
• Volume occupied by the driver (estimated) 1.5L
• Net weight 3.572kg
• Frame material Stamped Steel