... for hall. 2. Usage: conference room, theater, church, club etc. long range speaker, dual 15 inch speaker,sound system for hall.1 ... 2-way system unique enclosures design high efficiency passive mutifunctional long range speaker.. 2. As the speaker is unique enclosures design. ... horn sound coverage angle is 80°x 50° degrees4. The long range speakers are suitable for the dramaturgic place and night club ...