P.Audio GST-12500 v3

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.3dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 56Hz
• Mechanical quality factor QMS 8.34
• Electrical quality factor QES 0.51
• Total quality factor QTS 0.48

Large signal parameters

• Maximum linear excursion xmax 3.3mm
• Air volume displaced at xmax VD 179cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.52mH
• VC Diameter 76.2mm
• Winding height HVC 18.5mm
• Winding material Aluminum wire
• Former material Glass fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 15.7N/A
• Motor constant Bl/√RE 6.69N/√W
• Air gap height HAG 12mm
• Material Ferrite

Diaphragm

• Effective diameter 266mm
• Effective area SD 552cm²
• Moving mass MMS 65.9g
• Moving mass (without air load) MMD 56.8g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 8.13N/mm
• Compliance CMS 123µm/N
• Equivalent volume to the compliance VAS 52.9L
• Mechanical resistance RMS 2.78N·s/m
• Surround material Cloth
• Spider material Cotton

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 314mm
• Baffle cutout diameter 283mm
• Overall depth 159mm
• Flange thickness 17mm
• Mounting depth 142mm
• Volume occupied by the driver (estimated) 5.2L
• Net weight 15.2kg
• Frame material Aluminium