VS - 4622 linear amp is for large performance and non-linearity, voice quality requirements and design professional (multi-function) performance box, its biggest characteristic is the high clear and bright, alto full fruity, bass strong, high sound pressure level, vocals, reductive degree is high, it can meet the voices of high degree of reduction, environmental situations required by the non-linearity. Advanced BASSBOXPRO \ X - OVER a computer aided design of passive built-in frequency division circuit, reduced because of the external points band system link to the site operation and trouble unique 16 ohms high impedance circuit design can improve the speaker of the damping coefficient, reducing the need for power allocation problem of many sets of power amplifier.To improve the efficiency of the power amplifier to reduce the cost of investment.Ensure the stability of the system.(a power amplifier can push four speakers) Full range of sound box loudspeaker adopts the unique design of axisymmetric.A bass around each unit, the middle of the high unit.Its advantage is about audio-visual symmetry, the axial fan cylindrical wave radiation pattern.To reduce the effects due to phase difference of sound pressure. Using two high 65 core 156 magnetic tweeters. Bass with 2 190 75 core magnetic only 12 inch bass unit. USES high-density 18 mm birch plywood enclosure, and adopted the high durability of black box body surface polyurethane paint.Such speakers anti-aging has very strong strength, long-term the incarnation, the appearance of durable, and installed in the harsh environment, such as indoor but also can prevent moisture, installation is equipped with standard hanging device, can meet the installation requirements of different places. When this box is applicable to the gym, theatre, DISCO, nightclubs and other places of entertainment. For wider sound effects low, available n - 218 such as ultra-low frequency box used together, can have a better sound effect.