This is a tall boy type speaker system of the 325 series which is a middle size theater speaker series.
Two 13 cm cone type woofers are installed in the low range.
The diaphragm uses an advanced PMD diaphragm which is a complete improvement of PMD (Polymer Injected Mica Diaphram), the edge uses foamed EPDM surround, and the voice coil uses a hybrid spiral structure to directly apply drive energy to the diaphragm.
High-rigidity steel frame is used for the frame part.
A 3-cm dome type tweeter is installed in the high range.
The diaphragm is made of aluminum magnesium alloy. The diaphragm and voice coil bobbin are integrated into a DC diaphragm system. By eliminating the adhesive part, the weight of the vibration system is reduced and driving loss is reduced.