Dayton Audio Classic DCS380-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89dB
• Frequency response 20 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 21.5Hz
• Mechanical quality factor QMS 3.79
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 8.4mm
• Air volume displaced at xmax VD 688cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.9Ω
• Inductance (1kHz) LE 2.31mH
• VC Diameter 51mm
• Winding material Copper
• Former material Kapton® / Polyimide

Magnet

• Force factor Bl 12.4N/A
• Motor constant Bl/√RE 7.28N/√W
• Material Ferrite

Diaphragm

• Effective diameter 323mm
• Effective area SD 819cm²
• Moving mass MMS 190g
• Moving mass (without air load) MMD 174g
• Material Paper

Suspensions

• Stiffness KMS 3.45N/mm
• Compliance CMS 290µm/N
• Equivalent volume to the compliance VAS 267L
• Mechanical resistance RMS 6.77N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 385mm
• Baffle cutout diameter 349mm
• Overall depth 186mm
• Volume occupied by the driver (estimated) 4.6L
• Frame material Steel