During the OPPO PM-3's manufacturing process, the left and right drivers are closely matched to ensure optimum stereo imaging and soundstage.
Fem-Optimized Magnet System
Maximize sensitivity and consistency of the applied force over the driver area.
Double-sided Spiraling Coils
Allows twice as many conductors to be placed within the magnetic field, which leads to higher sensitivity, better damping, and even drive force.
Seven-Layer Diaphragm
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.