RB-310 is a high efficiency and superior performance of 10 inch two frequency full frequency loudspeaker. The two frequency inverted box design, the tweeter unit made the top foreign material composed of treble, bass speaker unit with foreign custom imported materials and manufacturing, can be used alone without application of ultra low and low frequency effects provide full submergence degree, with a distinctive image of and like singing, sound easy, clean bottom. The tweeter uses a specially modulated loudspeaker with an adjustable horn for asymmetrical design. It has a wide range of hearing. No matter what kind of installation environment, the horizontal and vertical angles can be adjusted. It is convenient, simple and easy to operate.