QSC AD-P SAT White is part of the Acoustic Design Series SAT loudspeaker line. This is ideal suite for background music applications. And that require refined depth and clarity even at lower volume settings. HF transducer: 2.75-inch (70 mm) weather treated paper cone woofer Rated noise power / voltage: 25 W / 20 V (rms) Effective frequency range: 150 Hz – 20 kHz Coverage (‐6 dB):170° Conical Product dimensions (Ø x H): Ø 4.3 x 4.5-inch (Ø 110 x 115 mm)

QSC AD-C820 S is acoustically identical and design for music playback. It is a distributed audio in applications and it  require high output from a ceiling mounted loudspeaker. It designed for trouble free operations and versatility. Frequency Response (-6 dB): 61 Hz – 18 kHz RMS Power Handling: 200 W 8" (203 mm) ferrite woofer and 1.4" (36 mm) neodymium compression driver Product Diameter: 14.9" (379 mm) and Depth: 8.3" (211 mm)

QSC AD-C6T Black Acoustic Design is a 6.5" two-way ceiling loudspeaker. And it ideally suited for a wide variety of foreground and background sound reinforcement applications. Effective frequency range: 65 Hz – 20 kHz Rated noise power / voltage: 60 watts / 31 volts (rms) Coverage (‐6 dB) Horizontal / Vertical : 135° conical DMT Product dimensions (Ø x H) Ø 280 x 237 mm (Ø 11.02 x 9.32 in)