Dayton Audio Classic DCS255-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.4dB
• Frequency response 31 - 200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 37.7Hz
• Mechanical quality factor QMS 7.42
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 8.3mm
• Air volume displaced at xmax VD 288cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 1.8mH
• VC Diameter 49.5mm
• Winding material Copper
• Former material Kapton® / Polyimide

Magnet

• Force factor Bl 12.6N/A
• Motor constant Bl/√RE 6.78N/√W
• Material Ferrite

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 95.5g
• Moving mass (without air load) MMD 90.8g
• Material Paper / Kevlar

Suspensions

• Stiffness KMS 5.26N/mm
• Compliance CMS 190µm/N
• Equivalent volume to the compliance VAS 32.1L
• Mechanical resistance RMS 3.05N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 10″
• 258mm
• Overall diameter 258mm
• Baffle cutout diameter 232mm
• Overall depth 141mm
• Volume occupied by the driver (estimated) 1.8L
• Frame material Steel