Dayton Audio Classic DCS165-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.4dB
• Frequency response 36 - 1100Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35.7Hz
• Mechanical quality factor QMS 6.62
• Electrical quality factor QES 0.36
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 75cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 1.43mH
• VC Diameter 38.5mm
• Winding material Copper
• Former material Kapton®/Polyimide

Magnet

• Force factor Bl 9.15N/A
• Motor constant Bl/√RE 4.96N/√W
• Material Ferrite

Diaphragm

• Effective diameter 126mm
• Effective area SD 125cm²
• Moving mass MMS 39.5g
• Moving mass (without air load) MMD 38.4g
• Material Paper / Kevlar

Suspensions

• Stiffness KMS 2N/mm
• Compliance CMS 500µm/N
• Equivalent volume to the compliance VAS 12.1L
• Mechanical resistance RMS 1.34N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 167mm
• Overall diameter 167mm
• Baffle cutout diameter 143mm
• Overall depth 83mm
• Volume occupied by the driver (estimated) 0.51L
• Frame material Steel