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Meyer Sound USW-112P Compact Narrow Subwoofer


Meyer Sound USW-112P Compact Narrow Subwoofer
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About: Meyer Sound USW-112P Compact Narrow Subwoofer

The USW-112P compact narrow subwoofer provides big bass sound for very tight spaces. Its compact rectangular enclosure and slanted connector panel enable flush-mounting of the cabinet against wall surfaces, reducing required installation depth to 12 inches, including connectors.

Designed to be the ideal companion to Meyer Sound’s ULTRA-X20, it also complements the low frequencies in other Meyer Sound loudspeakers, such as the UP-4slim and those in the UPM family.

The USW-112P has an operating frequency range of 35–140 Hz with a linear peak SPL of 123 dB, measured in half-space at 4 m and referred to 1 m using M-noise. The bass reflex cabinet employs a low-velocity port design for high efficiency and low port distortion.

The cabinet houses an open-loop, Class-D power amplifier with signal processing including correction filters for phase and frequency response, and driver protection circuitry. The amplifier/ processing package incorporates Meyer Sound’s Intelligent AC, which auto-selects the correct operating voltage, suppresses high voltage transients, filters EMI and provides soft-start power-up.

Audio connectors are XLR (analog version) or etherCON TOP (Milan Certified digital version), and power input and looping output connectors are PowerCON 20 (analog version) or powerCON TRUE1 TOP (digital and weather-protected models).

Remote monitoring is possible on the analog version via the optional RMS remote monitoring module, which in conjunction with the optional RMServer hardware unit, provides comprehensive monitoring of loudspeaker parameters from a host computer running Compass® Control Software. The digital version provides integrated monitoring via Compass Control Software.

Meyer Sound builds the USW-112P cabinet from premium birch plywood coated with a slightly textured black finish and includes a powder-coated, round-perforated steel grille to protect the drivers.

With its versatile shape, the USW-112P can be placed on the ground in either horizontal or vertical positions to accommodate installation requirements.

The USW-112P comes standard with M8 mounting points at the top and bottom for use with the optional U-bracket that enables wall, ceiling, or truss mounting. It also features an integral 35 mm pole mount receptacle with M20 threads for added stability.

Weather protection and custom color finishes for specific cosmetic requirements are available options. 

Robust Bass for Any Space

  • DISCREET SYSTEM ENHANCEMENT - The USW-112P self-powered subwoofer delivers powerful low-frequency performance in a compact, versatile package. It’s designed as an ideal companion for ULTRA‑X20 loudspeaker and complements a range of Meyer Sound loudspeakers including the UPM, UP‑4slim, Ashby‑5C, and Ashby‑8C. Its low-profile cabinet measures just 23.5 inches high by 13.5 inches wide by 12 inches deep, making it an ideal choice when space is limited.
  • LEAN-AND-CLEAN LOW END - Count on the USW-112P to deliver clean, low-distortion output at any output level: Its proprietary 12” low-distortion, long-excursion driver enhances low-frequency performance in the 35 to 140Hz range, and its cabinet incorporates a low-air-velocity port tuned for high efficiency, linear response, and low distortion.
  • POTENT PROCESSING - The USW-112P’s built-in Class D amplifier delivers a linear peak SPL of 123 dB, measured using M‑Noise. Sophisticated signal processing includes electronic crossover, correction filters for phase and frequency response, and driver-protection circuitry. The crossover accepts full-range signals, enabling daisy-chain signal distribution and eliminating the need for external crossovers in smaller systems.
  • AGILITY PLUS STABILITY - The 47-pound USW-112P fits anywhere, from churches and clubs to restaurants and small theatres. Orient it in horizontal or vertical position; its two integrated M8 mounting points can be used with an optional U-bracket to enable wall, ceiling, or truss mounting. Other options include a 35mm stand-mount receptacle with M20 threads for added stability.

Flexible and Feature-Packed

  • POWER THAT GOES THE DISTANCE - For applications where AC distribution is a limiting factor, the USW-112XP variant incorporates IntelligentDC technology, which receives balanced audio and DC power from a single composite cable—allowing for longer, lighter, conduit-free cable runs.
  • MONITORING MADE EASY - USW-112 loudspeakers feature advanced telemetry data when equipped with the Milan option. Users opting for analogue connectivity can still specify Meyer Sound’s RMS platform, which lets you monitor essential performance parameters right from your Mac or Windows PC running Compass control software.
  • STYLES FOR ALL SEASONS - The USW-112P’s premium birch plywood cabinet is available in custom finishes; a weather-protection option features sealed connectors, eliminating the need for rain hoods.
  • EXTREMELY WELL-CONNECTED - The USW-112 may be configured with any of four connector panel options. Two AC-powered versions feature looping Powercon connectors with either 3-pin or 5-pin XLR audio I/O and optional RMS remote monitoring; an IntelligentDC variant receives audio and DC power over single cable via its 5-pin Phoenix connector. A Milan version features looping Neutrik TOP True1 connections for power and a single TOP Ethercon for audio over IP and telemetry data.

Why Self-Powered?

Self-powered loudspeakers offer several advantages over their passive counterparts when it comes to fidelity, reliability, and simplicity. The great part is, you’ll start to reap the benefits of a self-powered system before you even power up.

Ease of Deployment

System set-up is so much easier when you have fewer components and fewer cables to worry about being miswired. Since self-powered loudspeakers incorporate amplification, you’ll never have to deal with matching speakers to amplifiers or connecting components. You don’t have to worry about calibration of gain and crossover setting which means more time focusing on the show. Eliminating amp racks doesn’t just streamline system deployment, it streamlines your inventory whether you’re a rental house or a road warrior. And when you consider that the average amp rack weighs nearly 300 pounds and takes up four feet of truck space, the efficiencies get even clearer. Let alone when you want to fly the amplifier racks to get closer to the speakers, often requiring more rigging points and more motors.

Predictable, Reliable Operation

Internal amplification is closely matched to drivers. Because individual components have been optimized during manufacturing, you can expect consistent sound from show to show. Built-in, factory-optimized protection circuitry provides extra assurance without degrading signal quality. And, when you have less equipment, you have less risk of failure.

Better Frequency and Phase Response

Because self-powered loudspeakers incorporate sophisticated processing, they are calibrated to exhibit optimal response curves in key performance parameters. Active crossovers are more precise, sophisticated designs, and bi-amped systems are time aligned, eliminating phase issues. The result? Accurate sound throughout the speaker’s range, at any volume level.

Unparalleled Clarity

In powered monitors, internal amplifiers are precision-matched to drivers, delivering optimal power at all times for cleaner sound. And because amps are built into loudspeaker cabinets, there’s no need for long lengths of connecting cable, which can become prone to distortion and signal loss.

Tighter Transients

Since self-powered loudspeakers have very short internal cables, amps inside can more effectively dampen driver mechanical motion, which leads to better sonic accuracy and tighter, crisper transients. (And, there’s none of the loss in levels and signal quality inherent over long cable distances.)


    • Operating Frequency Range -  35 Hz – 140 Hz
    • Frequency Response -  36 Hz – 125 Hz ± 4 dB
    • Phase Response -  45 Hz – 120 Hz ±30°
    • Linear Peak SPL
      • 123 dB with > 10.5 dB crest factor (M-noise)
      • 123 dB (Pink Noise)
      • 125 dB (B-noise)
    • Low Frequency -  One 12-inch cone driver; 3 Ω nominal impedance
    • Type -  Differential, electronically balanced
    • Maximum Common Mode Range -  ±15 V DC, clamped to earth for voltage transient protection
    • Connectors
      • XLR 3-pin female input with male loop output; optional XLR 5-pin connector to accommodate both balanced audio and RMS signals 
      • XLR 3-pin TOP (Total Outdoor Protection) connectors on weather-protected units only. ​
    • Input Impedance -  10 kΩ differential between Audio(+) and Audio(-) 
    • Wiring
      • Pin 1: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies
      • Pin 2: Audio +
      • Pin 3: Audio –
      • Pin 4: RMS (polarity insensitive)
      • Pin 5: RMS (polarity insensitive)
      • Case: Earth ground and chassis 
    • Nominal Input Sensitivity -  0 dBV (1.0 V rms) continuous is typically the onset of limiting for noise and music 
    • Input Level -  Audio source must be capable of producing of +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker. 
    • Type -  Open-loop, class D
    • Total Output Power -  1200 W peak
    • THD, IM, TIM -  < 0.02%
    • Cooling -  Convection
    • Connectors 
      • powerCON 20 input with loop output
      • powerCON TRUE1 TOP with loop output on digital and weather-protected units
    • Automatic Voltage Selection -  90–265 V AC, 50–60 Hz
    • Safety Agency Rated Voltage Range -  100–240 V AC, 50–60 Hz
    • Turn-on and Turn-off points -  90 V AC turn-on, no turn-off; internal fuse protection above 265 V AC
    • Idle Current -  0.23 A rms (115 V AC); 0.18 A rms (230 V AC); 0.25 A rms (100 V AC)
    • Maximum Long-Term Continuous Current (>10 sec) -  1.2 A rms (115 V AC); 0.7 A rms (230 V AC); 1.4 A rms (100 V AC)
    • Burst Current (<1 sec) -  3.6 A rms (115 V AC); 1.8 A rms (230 V AC); 4.1 A rms (100 V AC)
    • Maximum Instantaneous Peak Current -  8.9 A peak (115 V AC); 4.5 A peak (230 V AC); 10.3 A peak (100 V AC) 
    • Inrush Current -  < 20 A peak
    • Optional RMS module: two-conductor twisted-pair network that reports all operating parameters of amplifiers to system operator’s host computer via the RMServer hardware unit
    • Dimensions (WxHxD) -  13.5 x 23.5 x 12 inch (343 x 597 x 305mm)
    • Weight -  45 lb (20 kg)
    • Enclosure -  Premium multi-ply birch with slightly textured black finish
    • Protective Grille -  Powder-coated, round-perforated steel
    • IP Rating -  Weather-protected version rated IP54
    • Rigging -  Two integrated M8 threaded points; 35 mm Pole Mount with M20 thread; optional U-bracket for wall, ceiling, or truss mounting

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