Dayton Audio Point Source PS220-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.5dB
• Frequency response 40 - 25000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 46.4Hz
• Mechanical quality factor QMS 5.73
• Electrical quality factor QES 0.40
• Total quality factor QTS 0.38

Large signal parameters

• Maximum linear excursion xmax 4.8mm
• Air volume displaced at xmax VD 104cm³
• Power handling P 40W
• Program power Pmax 80W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.73mH
• VC Diameter 25.4mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 6.15N/A
• Motor constant Bl/√RE 2.47N/√W
• Material Neodymium

Diaphragm

• Effective diameter 166mm
• Effective area SD 216cm²
• Moving mass MMS 8.4g
• Moving mass (without air load) MMD 5.9g
• Material Paper / Kevlar

Suspensions

• Stiffness KMS 0.709N/mm
• Compliance CMS 1410µm/N
• Equivalent volume to the compliance VAS 90.2L
• Mechanical resistance RMS 0.43N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 8″
• 222mm
• Overall diameter 222mm
• Baffle cutout diameter 181mm
• Overall depth 94mm
• Volume occupied by the driver (estimated) 0.87L
• Frame material Steel