The finest in Commercial Electrostatic Speaker Technology. Built by hand • Proven by Physics • Heard by those who dare.
CS890TWS
The CS890TWS by RezCom and SoundLab takes everything great about the CS890 and re-engineers it for permanent wall-mounted dominance. Designed for theaters, gymnasiums, and other high-ceiling venues, this electrostatic loudspeaker brings pristine sound directly to the audience with zero guesswork. Its signature 15° front slant aims the audio sweet spot right where it needs to go—downward into seated rows or activity zones—making installation as simple as basic right-angle math. Whether flanking a movie screen or lining a basketball court, the CS890TWS delivers with the same stunning clarity and feedback-resistant performance as its sibling, but with the added durability and mounting precision required in high-impact spaces. Its electrostatic panel delivers crisp, articulate sound with a tight 90° x 40° dispersion pattern that avoids ceiling and floor reflections and keeps reverb at bay. In real-world use, the CS890TWS has held a solid 80 dB with crystal clarity at over 120 feet. The front-ported design delivers clean, punchy low-end without buildup or boom, even when mounted close to the wall—thanks to a U-shaped bracket that provides the ideal spacing for airflow and rear access. Finished with custom hardware, grille options including steel mesh, and professional-grade input connectors, this speaker looks as solid as it sounds.
Key Features
The CS890TWS was built to thrive in venues where wall-mount stability, clean aesthetics, and flawless sound dispersion are non-negotiable. Its sloped-front cabinet and front-facing port make it ideal for high wall placement without complex aiming calculations, while its electrostatic panel eliminates common issues like echo, feedback, and uneven coverage. A rugged U-shaped steel bracket locks it firmly into position, and the reinforced grille with internal steel mesh protects the panel in high-traffic areas like courts and theaters. Powered by a self-biasing circuit that draws directly from your amplifier—no AC required—the CS890TWS is bi-amp capable, offers three brilliance settings for tuning, and can be customized in finish, grille, feet, handle, and input connections. From movie dialogue to gym announcements, this is the speaker you install once—and hear forever.