P.Audio E12-300S v2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.3dB
• Frequency response 50 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 57Hz
• Mechanical quality factor QMS 7.65
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 3.4mm
• Air volume displaced at xmax VD 181cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.55mH
• VC Diameter 76.2mm
• Winding height HVC 16.8mm
• Winding material CCA-W
• Former material Glass fiber

Magnet

• Flux density B 1.2T
• Force factor Bl 17.1N/A
• Motor constant Bl/√RE 7.23N/√W
• Air gap height HAG 10mm
• Material Ferrite

Diaphragm

• Effective diameter 256mm
• Effective area SD 531cm²
• Moving mass MMS 61.3g
• Moving mass (without air load) MMD 52.6g
• Material Paper

Suspensions

• Stiffness KMS 7.94N/mm
• Compliance CMS 126µm/N
• Equivalent volume to the compliance VAS 50.4L
• Mechanical resistance RMS 2.87N·s/m
• Surround material Cloth
• Spider material Cotton (Single)

Dimensions

• Nominal diameter 12″
• 305mm
• Overall diameter 312mm
• Baffle cutout diameter 278mm
• Overall depth 148mm
• Flange thickness 9mm
• Mounting depth 139mm
• Volume occupied by the driver (estimated) 3L
• Net weight 7.0kg
• Frame material Steel