During the OPPO PM-3's manufacturing process, the left and right drivers are closely matched to ensure optimum stereo imaging and soundstage.
FEM-Optimised Magnet System
Maximise sensitivity and consistency of the applied force over the driver area.
Double-sided Spiralling Coils
Allows twice as many conductors to be placed within the magnetic field, which leads to higher sensitivity, better damping, and even drive force.
Ensures that it is very stable under thermal stress and vibration
Purely Resistive Impedance
OPPO's planar magnetic driver has a flat conductor pattern that does not have any inductive components. This eliminates inductance related inter-modulation distortion, which is especially common in dynamic drivers with high impedance and a high number of voice coil turns.