Dayton Audio Classic DCS385-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB
• Frequency response 19 - 200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 17.5Hz
• Mechanical quality factor QMS 5.27
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 9.3mm
• Air volume displaced at xmax VD 791cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 2.2mH
• VC Diameter 65.5mm
• Winding material Copper
• Former material Kapton® / Polyimide

Magnet

• Force factor Bl 15.4N/A
• Motor constant Bl/√RE 8.48N/√W
• Material Ferrite

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 273g
• Moving mass (without air load) MMD 256g
• Material Paper / Kevlar

Suspensions

• Stiffness KMS 3.33N/mm
• Compliance CMS 300µm/N
• Equivalent volume to the compliance VAS 311L
• Mechanical resistance RMS 5.7N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 15″
• 387mm
• Overall diameter 387mm
• Baffle cutout diameter 350mm
• Overall depth 186mm
• Volume occupied by the driver (estimated) 4.6L
• Frame material Steel