Q-SYS AD-C4T-LPZB, a low-profile 2-way passive in-ceiling loudspeaker featuring a 4.5-inch woofer and 0.75-inch aluminium tweeter, designed for professional audio installations where discreet appearance, consistent coverage and compatibility with 70V/100V distributed systems or 16Ω low-impedance operation are required.
The JBL CSS 8004 is a passive in-ceilling 4" loudspeaker with up to a total of 15W with a built-in 100V / 70V / 25V transformer, sensitivity 90dB and it has 85Hz-18kHz frequency response. The installation depth is 94mm and the ceiling cutout diameter is 125mm.