CSA 140Z Commercial 70V Amplifier + (2) 3.5" Black Cube Speakers

The JBL CSA 140Z amplifier and a pair of Rockville Cube 70V black speakers combine into a compact background music system for restaurants, offices, and retail stores that do not have room for large speakers. The 40W amplifier’s universal power supply accepts 100 to 240 VAC, and its fanless, one-rack-unit chassis built on Crown’s DriveCore technology keeps the equipment rack quiet. Illuminated control rings and a built-in RJ45 port for an optional JBL CSR-V controller round out the front panel.

Each Cube speaker packs a 3.5" paper cone woofer and a 0.5" PEI tweeter into a small ABS cabinet, using a true 2-way design for clearer highs and mids than the single-driver cube speakers many other brands sell. A 360-degree swivel wall bracket lets you aim each speaker exactly where you need it, and quick-disconnect euro-block terminals make wiring and future changes fast. A rear tap switch selects 1.5W, 3W, or 6W per speaker, so the same pair works in a small nook or a larger open room. Because the system runs on the 70V standard, cable runs can stretch further without losing volume, and more Cube or other 70V speakers can be added to the same line later. Mounting brackets, safety cables, and screws are included, so installation only takes basic tools.