The Klipsch RSM‑400 is a compact, full‑range 4" surface‑mount loudspeaker designed for versatile indoor and outdoor residential installations, combining Klipsch’s high‑efficiency acoustic design with durable, weather‑resistant construction. It features a 4" polypropylene woofer paired with a 3/4" titanium compression driver mounted on a 90° x 90° Tractrix horn to deliver wide, even coverage and clear, detailed sound, all housed in a sealed, paintable ABS enclosure rated IPX5 for water resistance in demanding environments. The speaker supports flexible installation through dual 5‑way binding posts and secure grille mounting, while offering balanced performance with an 8Ohm nominal impedance, 85 dB sensitivity, and a frequency response extending from approximately 79Hz to 20kHz, making it suitable for consistent, high‑quality audio in distributed residential audio systems.