Dayton Audio CE45N-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 79.2dB
• Frequency response 150 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 178Hz
• Mechanical quality factor QMS 4.23
• Electrical quality factor QES 1.12
• Total quality factor QTS 0.89

Large signal parameters

• Maximum linear excursion xmax 1.1mm
• Air volume displaced at xmax VD 0.9cm³
• Power handling P 5W
• Program power Pmax 10W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.7Ω
• Inductance (1kHz) LE 0.07mH
• VC Diameter 16mm

Magnet

• Force factor Bl 1.78N/A
• Motor constant Bl/√RE 0.93N/√W

Diaphragm

• Effective diameter 32mm
• Effective area SD 8cm²
• Moving mass MMS 0.86g
• Moving mass (without air load) MMD 0.8g

Suspensions

• Stiffness KMS 1.09N/mm
• Compliance CMS 920µm/N
• Equivalent volume to the compliance VAS 0.084L
• Mechanical resistance RMS 0.23N·s/m

Dimensions

• Nominal diameter 1.75″
• 57mm
• Overall diameter 57mm
• Baffle cutout diameter 22mm
• Overall depth 25mm