Dayton Audio DA115-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB
• Frequency response 60 - 15000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 60Hz
• Mechanical quality factor QMS 2.60
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 2.5mm
• Air volume displaced at xmax VD 13cm³
• Power handling P 20W
• Program power Pmax 40W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 0.7mH
• VC Diameter 25mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 5.7N/A
• Motor constant Bl/√RE 2.25N/√W
• Material Ferrite

Diaphragm

• Effective diameter 82mm
• Effective area SD 53.1cm²
• Moving mass MMS 6.6g
• Moving mass (without air load) MMD 6.3g
• Material Aluminum

Suspensions

• Stiffness KMS 0.909N/mm
• Compliance CMS 1100µm/N
• Equivalent volume to the compliance VAS 4.4L
• Mechanical resistance RMS 0.96N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 4″
• 116mm
• Overall diameter 116mm
• Baffle cutout diameter 93mm
• Overall depth 57mm
• Volume occupied by the driver (estimated) 0.19L
• Frame material Steel