Dayton Audio PA255-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.6dB
• Frequency response 46 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 50.5Hz
• Mechanical quality factor QMS 8.49
• Electrical quality factor QES 0.66
• Total quality factor QTS 0.61

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 173cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 1.49mH
• VC Diameter 51mm
• Winding material Copper
• Former material Kapton® / Polyimide

Magnet

• Force factor Bl 10.6N/A
• Motor constant Bl/√RE 4.52N/√W
• Weight 1.417kg
• Material Ferrite

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 42.3g
• Moving mass (without air load) MMD 37.7g
• Material Paper / Carbon Fiber

Suspensions

• Stiffness KMS 4.17N/mm
• Compliance CMS 240µm/N
• Equivalent volume to the compliance VAS 41.2L
• Mechanical resistance RMS 1.58N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 10″
• 254mm
• Overall diameter 254mm
• Baffle cutout diameter 232mm
• Overall depth 125mm
• Volume occupied by the driver (estimated) 1.5L
• Frame material Steel