CSA140Z 70V Amplifier + (4) RockSlim 70B Black Wall Speakers

This package pairs the JBL CSA 140Z 40W Commercial 70V Amplifier with 4 Rockville RockSlim 70V 5.25" Slim Wall Speaker in black speakers, giving retail stores and living spaces needing a low-profile wall speaker a complete 70V sound system without sourcing amp and speakers separately. The JBL CSA 140Z anchors the system with a single 40W channel built on Crown's DriveCore technology, which replaces hundreds of discrete parts with one chip to cut down on points of failure while keeping the sound clean. Built-in 70V and 100V operation lets it power a distributed system straight out of the box, and a universal power supply accepts 100 to 240 VAC so it works on nearly any electrical service. The fanless 1U rack design stays quiet enough for a dining room, and a sleep mode disable function keeps the amp always ready for paging or background music. The package also includes the 4 Rockville RockSlim wall speakers, built with the slimmest profile in the lineup and a bracket molded directly into the cabinet. Mounting takes about as long as hanging a picture frame, and recessed spring-loaded terminals with a molded wire groove hide the cabling behind the speaker. A rear selector switches between 8W and 4W on the 70V line for simple zoning. Because both pieces are matched for 70V operation, wiring the 4 speakers to the amplifier is a matter of running positive and negative leads with no impedance math, and the amp's power still has headroom for expanding the zone later.