1, active (with built-in amplifier) portable speakers, the box is not afraid of collision and rain the kind of plastic or with plastic decorative surface.
2, speakers using power 12V DC power supply, can be connected to the car power to use, you can also use 220 volts AC power supply. Must have karaoke function.
3, the company outing, party places open space, more people, the power needed to be large. At least 300 watts of effective power, peak power of 1000 watts or more.
4, the speaker caliber should be more than 8 inches, buy two speakers of the dual-unit speakers, bass speakers 10 inches to 15 inches of the kind.
5, do not go to the grocery store, to the sound engineering company to buy stage speakers. There things are more real, the price of water is also less. Travel back, the speaker can also be placed in the conference room.