P.Audio GST-181500 v3

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.9dB
• Frequency response 40 - 800Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 11.95
• Electrical quality factor QES 0.63
• Total quality factor QTS 0.60

Large signal parameters

• Maximum linear excursion xmax 9mm
• Air volume displaced at xmax VD 1103cm³
• Power handling P 1400W
• Program power Pmax 2800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.26mH
• VC Diameter 126mm
• Winding height HVC 32mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Flux density B 1.2T
• Force factor Bl 26.8N/A
• Motor constant Bl/√RE 11.3N/√W
• Air gap height HAG 14mm
• Material Ferrite

Diaphragm

• Effective diameter 397mm
• Effective area SD 1225cm²
• Moving mass MMS 289g
• Moving mass (without air load) MMD 259g
• Material Waterproof Paper

Suspensions

• Stiffness KMS 23.3N/mm
• Compliance CMS 43µm/N
• Equivalent volume to the compliance VAS 92.2L
• Mechanical resistance RMS 6.08N·s/m
• Surround material Cloth
• Spider material Cotton (Double Silicone)

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 467mm
• Baffle cutout diameter 425mm
• Overall depth 252mm
• Flange thickness 20mm
• Mounting depth 232mm
• Volume occupied by the driver (estimated) 12L
• Net weight 24.8kg
• Frame material Aluminium