P.Audio E18-600S v2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.3dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 10.41
• Electrical quality factor QES 0.46
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 6.5mm
• Air volume displaced at xmax VD 796cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.8Ω
• Inductance (1kHz) LE 1.11mH
• VC Diameter 99.3mm
• Winding height HVC 25mm
• Winding material Round Copper Wire
• Former material Glass fiber

Magnet

• Flux density B 1.1T
• Force factor Bl 22.9N/A
• Motor constant Bl/√RE 9.52N/√W
• Air gap height HAG 12mm
• Material Ferrite

Diaphragm

• Effective diameter 394mm
• Effective area SD 1225cm²
• Moving mass MMS 176g
• Moving mass (without air load) MMD 147g
• Material Paper

Suspensions

• Stiffness KMS 10N/mm
• Compliance CMS 100µm/N
• Equivalent volume to the compliance VAS 212L
• Mechanical resistance RMS 4.05N·s/m
• Surround material Cloth
• Spider material Cotton (Single)

Dimensions

• Nominal diameter 18″
• 457mm
• Overall diameter 460mm
• Baffle cutout diameter 418mm
• Overall depth 205mm
• Flange thickness 12mm
• Mounting depth 193mm
• Volume occupied by the driver (estimated) 7.1L
• Net weight 13.0kg
• Frame material Steel