FEATURES Applies to Large conference room, Academic report hall, multi-functional halls, church, auditorium CABINET UT-2410S/UT15S-R H Section adopts 1.75 inch neodymium magnetic tweeter; L Section adopts dual 4.5 inch bass Small size, easy to use,; can be connected to the computer through the USB interface, to control frequency response, crossover point, crossover slope, delay, gain, etc. One set include 4pcs full range speakers + 1pc sub