Morel Elite EW 428

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 62Hz
• Mechanical quality factor QMS 2.36
• Electrical quality factor QES 0.41
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 26cm³
• Power handling P 150W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.3Ω
• Inductance (1kHz) LE 0.44mH
• VC Diameter 54mm
• Winding height HVC 14mm
• Winding material Hexatech™ Aluminum
• Former material Aluminum

Magnet

• Flux density B 0.94T
• Force factor Bl 6.1N/A
• Motor constant Bl/√RE 2.43N/√W
• Air gap height HAG 5mm
• Material Neodymium vented

Diaphragm

• Effective diameter 85mm
• Effective area SD 57cm²
• Moving mass MMS 6.16g
• Moving mass (without air load) MMD 5.8g
• Material Damped polymer composite

Suspensions

• Stiffness KMS 0.956N/mm
• Compliance CMS 1046µm/N
• Equivalent volume to the compliance VAS 4.7L
• Mechanical resistance RMS 1.02N·s/m

Dimensions

• Nominal diameter 4″
• 119mm
• Overall diameter 119mm
• Baffle cutout diameter 94mm
• Overall depth 56mm
• Flange thickness 5mm
• Mounting depth 51mm
• Volume occupied by the driver (estimated) 0.16L
• Net weight 0.518kg