The Meyer Sound USW-112P is a compact, self-powered subwoofer engineered to deliver powerful low-frequency performance in spaces where traditional subwoofers cannot fit. Introduced in February 2020, this slender subwoofer measures just 23.5 inches high, 13.5 inches wide, and less than 12 inches deep, with a slanted connector panel that enables flush-mounting against wall surfaces for installations requiring a minimal depth profile of only 12 inches, including connectors. The USW-112P is designed as the ideal companion to Meyer Sound's ULTRA-X20 loudspeaker while also complementing the UPM family, UP-4slim, Ashby-5C, and Ashby-8C loudspeakers.

The subwoofer houses a proprietary 12-inch low-distortion, long-excursion driver powered by a highly efficient Class D amplifier that delivers 1200 watts of peak power. The operating frequency range spans 35 to 140 Hz with a frequency response of 36 to 125 Hz (±4 dB), achieving a linear peak SPL of 123 dB measured with M-noise. The bass reflex cabinet employs a low-velocity port design tuned for high efficiency, linear response, and exceptionally low distortion. Sophisticated signal processing includes electronic crossover, correction filters for phase and frequency response (±30° from 45 to 120 Hz), and driver-protection circuitry. The crossover accepts full-range signals for daisy-chain distribution, eliminating the need for external crossovers in smaller systems.

Meyer Sound builds the USW-112P cabinet from premium birch plywood with a durable black-textured finish, protected by a powder-coated, round-perforated steel grille. The amplifier incorporates Intelligent AC technology, which auto-selects the correct operating voltage from 100 to 240 V AC, suppresses high voltage transients, filters EMI, and provides soft-start power-up. Standard features include M8 mounting points at the top and bottom for use with the optional U-bracket, an integral 35 mm pole mount receptacle with M20 threads for added stability, and a removable carry handle. The analog version uses XLR audio connectors with powerCON 20 power connectors, while the Milan Certified digital version uses etherCON and PowerCON TRUE1 TOP connectors. Optional weather protection (IP-X4 or higher) is available, as is the IntelligentDC version (USW-112XP) for systems where AC distribution is limited, and RMS remote monitoring for comprehensive system telemetry.