SOUND TOWN PAC360X18CS6N COMMERCIAL AUDIO SET: The Sound Town PAC360X18CS6N commercial audio bundle includes (1) Sound Town PAC360-6 power amplifier and (9) STCS6N-PAIR (18 in total) two-way in-ceiling speakers SOUND TOWN PAC360-6 POWER AMPLIFIER: The Sound Town PAC360-6 amplifier works with 70V/100V or 4~16 ohm low impedance speakers, delivering 360W of power output. It supports Bluetooth and offers 6 zones with individual volume controls. Built-in clipping limiter protects your speakers and amp from overheating SOUND TOWN STCS6N IN-CEILING SPEAKERS: Includes (9) STCS6N-PAIR (18 total) coaxial in-ceiling speakers, each equipped with a 6.5' woofer and a 1' coaxial compression driver capable of 60W RMS and 120W program power at 8