Dayton Audio DA215-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB
• Frequency response 35 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34.9Hz
• Mechanical quality factor QMS 1.95
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 5.3mm
• Air volume displaced at xmax VD 112cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.8Ω
• Inductance (1kHz) LE 1.44mH
• VC Diameter 36mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 10N/A
• Motor constant Bl/√RE 3.83N/√W
• Weight 0.85kg
• Material Ferrite

Diaphragm

• Effective diameter 164mm
• Effective area SD 211cm²
• Moving mass MMS 30.3g
• Moving mass (without air load) MMD 28g
• Material Aluminum

Suspensions

• Stiffness KMS 1.47N/mm
• Compliance CMS 680µm/N
• Equivalent volume to the compliance VAS 42.7L
• Mechanical resistance RMS 3.41N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 8″
• 216mm
• Overall diameter 216mm
• Baffle cutout diameter 180mm
• Overall depth 95mm
• Volume occupied by the driver (estimated) 0.86L
• Frame material Steel