Keep speech intelligible and background music consistent across small commercial zones with the JBL CSS8004. This 4-inch ceiling speaker is designed for distributed audio systems that need dependable coverage without adding visual clutter. A 5 W multi-tap transformer supports 70V, 100V, and 25V operation, giving integrators flexibility across mixed-voltage projects and zone-by-zone tuning. The pre-assembled driver, grille, and transformer reduce installation steps and help standardize rollout across multi-room environments. With 90 dB sensitivity and 175-degree coverage, the speaker is built to project sound efficiently in spaces where even dispersion matters more than raw output. The punched metal grille delivers a restrained, professional finish suited to offices, retail, hospitality, and light commercial interiors. For projects that require a cleaner ceiling interface, the CSS8004 is compatible with the CSS-BB4 backcan and CSS-TB4/8 tile rails. Sold individually and packaged in master packs of six, it fits both single-room upgrades and larger deployment schedules. For buyers comparing commodity ceiling speakers, this model stands out by combining installation speed, transformer flexibility, and the JBL/Harman commercial audio pedigree that matters when the system has to sound right on day one and stay consistent over time.