Dayton Audio PCX12-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.8dB
• Frequency response 50 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40.5Hz
• Mechanical quality factor QMS 10.50
• Electrical quality factor QES 0.59
• Total quality factor QTS 0.56

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 102cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.0Ω
• Inductance (1kHz) LE 1.19mH
• VC Diameter 50.8mm
• Winding material Copper Kapton
• Former material Polyimide

Magnet

• Force factor Bl 9.69N/A
• Motor constant Bl/√RE 3.67N/√W
• Material Ferrite

Diaphragm

• Effective diameter 255mm
• Effective area SD 511cm²
• Moving mass MMS 31.5g
• Moving mass (without air load) MMD 23.2g
• Material Paper

Suspensions

• Stiffness KMS 2.04N/mm
• Compliance CMS 491µm/N
• Equivalent volume to the compliance VAS 180L
• Mechanical resistance RMS 0.76N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 12″
• 310mm
• Overall diameter 310mm
• Baffle cutout diameter 280mm
• Overall depth 140mm
• Volume occupied by the driver (estimated) 2.3L
• Frame material Stamped Steel