Dayton Audio CE40-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 79.1dB
• Frequency response 150 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 194Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 1.45
• Total quality factor QTS 1.12

Large signal parameters

• Maximum linear excursion xmax 0.7mm
• Air volume displaced at xmax VD 0.5cm³
• Power handling P 10W
• Program power Pmax 20W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.06mH
• VC Diameter 16mm

Magnet

• Force factor Bl 1.5N/A
• Motor constant Bl/√RE 0.79N/√W

Diaphragm

• Effective diameter 30mm
• Effective area SD 7.1cm²
• Moving mass MMS 0.73g
• Moving mass (without air load) MMD 0.7g

Suspensions

• Stiffness KMS 1.09N/mm
• Compliance CMS 920µm/N
• Equivalent volume to the compliance VAS 0.064L
• Mechanical resistance RMS 0.18N·s/m

Dimensions

• Nominal diameter 1″
• 40mm
• Overall diameter 40mm
• Baffle cutout diameter 37mm
• Overall depth 23mm