Dayton Audio TCP115-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 81.6dB
• Frequency response 55 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 59.2Hz
• Mechanical quality factor QMS 2.30
• Electrical quality factor QES 0.54
• Total quality factor QTS 0.43

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 20cm³
• Power handling P 40W
• Program power Pmax 80W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.8Ω
• Inductance (1kHz) LE 1.9mH
• VC Diameter 25.4mm
• Winding material CCA
• Former material Aluminum

Magnet

• Force factor Bl 7.4N/A
• Motor constant Bl/√RE 2.65N/√W
• Material Ferrite

Diaphragm

• Effective diameter 80mm
• Effective area SD 50cm²
• Moving mass MMS 10.2g
• Moving mass (without air load) MMD 9.9g
• Material Treated Paper

Suspensions

• Stiffness KMS 1.41N/mm
• Compliance CMS 710µm/N
• Equivalent volume to the compliance VAS 2.52L
• Mechanical resistance RMS 1.64N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 4″
• 116mm
• Overall diameter 116mm
• Baffle cutout diameter 96mm
• Overall depth 59mm
• Volume occupied by the driver (estimated) 0.2L
• Frame material Steel