Goldwood GW-S525/8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.6dB
• Frequency response 40 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 81.1Hz
• Mechanical quality factor QMS 2.86
• Electrical quality factor QES 1.18
• Total quality factor QTS 0.84

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 17cm³
• Power handling P 70W
• Program power Pmax 130W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.0Ω
• Inductance (1kHz) LE 0.4mH
• VC Diameter 25.4mm
• Winding material Aluminum

Magnet

• Force factor Bl 5.41N/A
• Motor constant Bl/√RE 2.04N/√W
• Weight 0.425kg

Diaphragm

• Effective diameter 102mm
• Effective area SD 82.3cm²
• Moving mass MMS 9.7g
• Moving mass (without air load) MMD 9.1g
• Material Poly

Suspensions

• Stiffness KMS 2.52N/mm
• Compliance CMS 397µm/N
• Equivalent volume to the compliance VAS 3.8L
• Mechanical resistance RMS 1.73N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 5.25″
• 145mm
• Overall diameter 145mm
• Baffle cutout diameter 113mm
• Mounting depth 57mm
• Volume occupied by the driver (estimated) 0.4L
• Net weight 1.021kg
• Frame material Stamped Steel