The AC-C6T ceiling speaker from QSC is 6 "with a 70 / 100V transformer suitable for announcements, background music and applications that require sound amplification.
The Apart CM-20T W is a passive, in-ceiling, 2-way, plasti, 6.5" loudspeaker with up to a total of 30W at 8Ω, max SPL 104dB, sensitivity 86dB and it has 60Hz-20kHz frequency response. The installation depth is 80mm and the ceiling cutout diameter is 186mm.
The QSC AD-C.SAT is part of the AcousticDesign™ Series SUB/SAT loudspeaker solution, which is ideally suited for background music applications that require depth and clarity even at lower volume settings. The AcousticDesign Series SUB/SAT loudspeakers are specifically designed to be mix-and-match capable; meaning any combination of satellites may be paired with any subwoofer in the AD Series SUB/SAT line.
Q-SYS AD-C6T-ZB, a 2-way passive in-ceiling loudspeaker with a zero-bezel design, featuring a 6.5-inch woofer and a 0.75-inch aluminium tweeter, designed for professional foreground and background audio installations with support for 70V/100V distributed systems and 16Ω bypass operation.
Focal Littora 200 ICW8, 2-way passive in-ceiling 8 inch outdoor speaker for use in yachting and humid spaces. The recommended amp power is between 25 – 150W at 8Ω with 90dB sensitivity and 48Hz-28kHz frequency response.