Elite 4" Midrange drive unit 8Ω. The Morel EM 428 is a 4 inch 8 ohm midrange drive unit from the Elite range featuring the Morel Uniflow rigid steel chassis, Neodymium magnet system, 2.1 inch (53.3mm) Hexatech voice coil and a shallow damped composite polymer cone. This midrange unit has a 6mm maximum linear excursion and high power handling of 150w nominal, 800w peak. High linearity between 300Hz-3kHz. Key Features: 2.1" Large Hexatech™ Aluminum voice coil Neodymium magnet system Uniflow™ steel chassis Shallow profile D.P.C cone High maximum linear excursion High power handling Basic parameters: Resonant frequency (fs) 68 Hz Nominal impedance (Zn) 8 Ω Mechanical Q factor (Qms) 3.03 DC resistance (Re) 5.4 Ω Electrical Q factor (Qes) 0.48 RMS power handling 150W Total Q factor (Qts) 0.41 Sensitivity (2.83V/1m) 87 dB Equivalent volume (Vas) 3.5 L Chassis diameter 118.5 mm Here's the full datasheet: EM428
