QSC AD-C1200 is design for music playback. It require high output from a ceiling mounted loudspeaker. It designed for trouble free operation and versatility. Frequency Response (-6 dB): 42 Hz – 18 kHz RMS Power Handling: 300 W Nominal Coverage: 85° horizontal and vertical Dimension(W x D x H): 23" x 18" x 15.5" (584 mm x 454 mm x 393 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-LP White Acoustic Design is a 6.5" two-way low profile 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): 135° conical DMT Product dimensions (Ø x H) Ø 340 x 100 mm (Ø 13.37 x 3.95 in)

QSC AD-C4T-LP White Acoustic Design is a 4.5" two-way low profile ceiling loudspeaker. And it ideally suited for a wide variety of foreground and background sound reinforcement applications. Effective frequency range: 70 Hz – 20 kHz Rated noise power / voltage: 30 watts / 22 volts (rms) Rated coverage (‐6 dB): 150° conical DMT Product dimensions (Diameter x Height): Ø 280 x 100 mm (Ø 11.02 x 3.93 in.)