Dayton Audio Designer DS315-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.3dB
• Frequency response 25 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 24.2Hz
• Mechanical quality factor QMS 1.79
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 279cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.1Ω
• Inductance (1kHz) LE 1.43mH
• VC Diameter 49.5mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 15.6N/A
• Motor constant Bl/√RE 6.32N/√W
• Weight 2.183kg
• Material Ferrite

Diaphragm

• Effective diameter 254mm
• Effective area SD 507cm²
• Moving mass MMS 97.4g
• Moving mass (without air load) MMD 89.1g
• Material Coated Paper

Suspensions

• Stiffness KMS 2.27N/mm
• Compliance CMS 440µm/N
• Equivalent volume to the compliance VAS 159L
• Mechanical resistance RMS 8.27N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 314mm
• Overall diameter 314mm
• Baffle cutout diameter 272mm
• Overall depth 130mm
• Volume occupied by the driver (estimated) 2.1L
• Frame material Steel