Dayton Audio PSS555-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 27 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 27.6Hz
• Mechanical quality factor QMS 10.70
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 11mm
• Air volume displaced at xmax VD 1909cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1.8mH
• VC Diameter 114.3mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 29.7N/A
• Motor constant Bl/√RE 12.8N/√W
• Weight 5.67kg
• Material Ferrite

Diaphragm

• Effective diameter 470mm
• Effective area SD 1735cm²
• Moving mass MMS 316g
• Moving mass (without air load) MMD 266g
• Material Treated Paper

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 444L
• Mechanical resistance RMS 5.12N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 21″
• 550mm
• Overall diameter 550mm
• Baffle cutout diameter 511mm
• Overall depth 254mm
• Volume occupied by the driver (estimated) 11L
• Frame material Cast Aluminium