Dayton Audio CE4278-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.7dB
• Frequency response 150 - 17000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 211Hz
• Mechanical quality factor QMS 6.20
• Electrical quality factor QES 1.58
• Total quality factor QTS 1.26

Large signal parameters

• Maximum linear excursion xmax 2.1mm
• Air volume displaced at xmax VD 3.3cm³
• Power handling P 10W
• Program power Pmax 20W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.3Ω
• Inductance (1kHz) LE 0.12mH
• VC Diameter 16mm

Magnet

• Force factor Bl 2.88N/A
• Motor constant Bl/√RE 1.07N/√W

Diaphragm

• Effective diameter 45mm
• Effective area SD 15.8cm²
• Moving mass MMS 1.4g
• Moving mass (without air load) MMD 1.4g

Suspensions

• Stiffness KMS 2.41N/mm
• Compliance CMS 415µm/N
• Equivalent volume to the compliance VAS 0.145L
• Mechanical resistance RMS 0.3N·s/m

Dimensions

• Nominal size 1.25 x 3″
• 42 x 78mm
• Overall size 42 x 78mm
• Baffle cutout diameter 62mm
• Overall depth 26mm