Dayton Audio Reference RSS315HFA-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.6dB
• Frequency response 25 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 22.2Hz
• Mechanical quality factor QMS 2.50
• Electrical quality factor QES 0.54
• Total quality factor QTS 0.45

Large signal parameters

• Maximum linear excursion xmax 14.3mm
• Air volume displaced at xmax VD 725cm³
• Power handling P 400W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 1.56mH
• VC Diameter 65.5mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 18N/A
• Motor constant Bl/√RE 7.06N/√W
• Material Ferrite

Diaphragm

• Effective diameter 254mm
• Effective area SD 507cm²
• Moving mass MMS 194g
• Moving mass (without air load) MMD 186g
• Material Black Anodized Aluminum

Suspensions

• Stiffness KMS 3.7N/mm
• Compliance CMS 270µm/N
• Equivalent volume to the compliance VAS 97.2L
• Mechanical resistance RMS 10.8N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 314mm
• Overall diameter 314mm
• Baffle cutout diameter 282mm
• Overall depth 146mm
• Volume occupied by the driver (estimated) 2.5L
• Frame material Steel