How to make professional speakers with high cost performance, how to meet the requirement of investors on the stability of the product, and the polar engineers in the design of this series of products, in line with the maximum advantage of the voice of the speaker unit, slam the door has nothing to do with the sound of fancy design, do everything possible to improve product performance, although the cabinet design line is simple, but the design of the frequency divider is no reduction materials, international brand capacitor, orientation of silicon steel sheet, oxygen free copper coils, non-inductive resistance, unique high-pitched electronic protection circuit devices, the configuration is in high-end product engineer at ordinary times on the application without reservation, PK series will be in the entertainment audio market to have a significant impact on the listing of high cost performance synonymous.