Morel EM 428
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.
| 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 |
EM428