Dayton Audio Esoteric ES180TiA-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.4dB
• Frequency response 35 - 5500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33.7Hz
• Mechanical quality factor QMS 4.90
• Electrical quality factor QES 0.44
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 5.3mm
• Air volume displaced at xmax VD 70cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.4Ω
• Inductance (1kHz) LE 1.13mH
• VC Diameter 75mm
• Winding material CCA
• Former material Titanium

Magnet

• Force factor Bl 9.8N/A
• Motor constant Bl/√RE 3.6N/√W
• Material Neodymium

Diaphragm

• Effective diameter 130mm
• Effective area SD 133cm²
• Moving mass MMS 26.8g
• Moving mass (without air load) MMD 25.6g
• Material Nomex

Suspensions

• Stiffness KMS 1.19N/mm
• Compliance CMS 840µm/N
• Equivalent volume to the compliance VAS 20.7L
• Mechanical resistance RMS 1.16N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 7″
• 175mm
• Overall diameter 175mm
• Baffle cutout diameter 148mm
• Overall depth 74mm
• Volume occupied by the driver (estimated) 0.46L
• Frame material Cast Aluminium