Datasheet — USW-112P
Compact Narrow Subwoofer
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UPQ-D3 Loudspeaker and Dimensions
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 version1), 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.
Accessories and Associated Products
MUB-USW-112 U-Bracket — The MUB-USW-112 U-Bracket enables mounting of a single USW-112P loudspeaker to a wall (in either vertical or horizontal orientations), to the ceiling or onto the floor. The kit includes two M8 bolts/washers and two M8 knobs/washers.
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MUB-USW-112P U-Bracket
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MPK-POLE-35MM/M20 Adjustable Pole Mount — Adjustable length 927–1524 mm (36.5–60 in) pole with assisted lift. Lower shaft fits 35 mm cups or use the removable M20 threaded lug for added stability. Additional 35 mm to 38 mm (1.5 in) adapter included. Upper shaft includes a PAS-M8 adapter sleeve to fit loudspeakers with M8 rig nuts and a PAS-M20 Adapter Sleeve to fit loudspeakers with 35 mm and M20 internal pole mounts onto 35 mm speaker stands.
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MPK-POLE-35MM/M20 Adjustable Pole Mount Kit
Specifications
ACOUSTICAL1 | ||
Operating Frequency Range2 | 35 Hz – 140 Hz | |
Frequency Response3 | 36 Hz – 125 Hz ± 4 dB | |
Phase Response | 45 Hz – 120 Hz ±30° | |
Linear Peak SPL4 | 123 dB with > 10.5 dB crest factor (M-noise), 123 dB (Pink Noise), 125 dB (B-noise) | |
TRANSDUCER | ||
Low Frequency | One 12-inch cone driver; 3 Ω nominal impedance | |
AUDIO INPUT | ANALOG AUDIO VERSION | DIGITAL AUDIO VERSION |
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. | etherCON TOP |
Input Impedance | 10 kΩ differential between Audio(+) and Audio(-) | — |
Wiring5 | 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. | — |
Digital Format | — | Milan Certified |
AMPLIFIER | ||
Type | Open-loop, Class-D | |
Total Output Power6 | 1200 W peak | |
THD, IM, TIM | < 0.02% | |
Cooling | Convection | |
AC POWER | ||
Connector | 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 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 | |
CURRENT DRAW | ||
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)7 | 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 | |
REMOTE MONITORING | ANALOG AUDIO VERSION9 | DIGITAL AUDIO VERSION |
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 | Integrated monitoring via Compass Control Software | |
PHYSICAL | ||
Dimensions | W: 13.5 in (343 mm) x H: 23.5 in (597 mm) x D: 12 in (305 mm) | |
Weight | 45 lb (20 kg) | |
Enclosure | Premium multi-ply birch with slightly textured black finish | |
IP Rating | Weather-protected version rated IP54. See the USW-112P Operating Instructions for details | |
Protective Grille | Powder-coated, round-perforated steel | |
Rigging | Two integrated M8 threaded points; 35 mm Pole Mount with M20 thread; optional U-bracket for wall, ceiling, or truss mounting | |
Notes
Milan is a trademark of the Avnu Alliance (avnu.org).
Loudspeaker system predictions for coverage and SPL are available in Meyer Sound’s MAPP System Design Tool.
Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics.
Half-space, measured with 1/3 octave frequency resolution at 4 m.
Linear Peak SPL is measured in half-space at 4 m referred to 1 m. Loudspeaker SPL compression measured with M-noise at the onset of limiting, 2-hour duration, and 50 °C ambient temperature is < 2 dB.
M-noise is a full bandwidth (10 Hz–22.5 kHz) test signal developed by Meyer Sound to better measure the loudspeaker’s music performance. It has a constant instantaneous peak level in octave bands, a crest factor that increases with frequency, and a full bandwidth Peak to RMS ratio of 18 dB. The presence of a greater-than (>) symbol with regard to crest factor indicates it may be higher depending on EQ and boundary loading.
Pink noise is a full bandwidth test signal with Peak to RMS ratio of 12.5 dB.
B-noise is a Meyer Sound test signal used to ensure measurements reflect system behavior when reproducing the most common input spectrum, and to verify there is still headroom over pink noise.
Pins 4 and 5 (RMS) only included with XLR 5-pin connector that accommodates both balanced audio and RMS signals. The 5-pin XLR connector is not available on weather-protected models.
Peak power based on the maximum unclipped peak voltage the amplifier will produce into the nominal load impedance.
AC power cabling must be of sufficient gauge so that under burst current rms conditions, cable transmission losses do not cause the loudspeaker’s voltage to drop below the specified operating range.
RMServer hardware unit required and sold separately.
Architectural Specifications
The loudspeaker shall be a self-powered, sub-bass system. The transducer shall consist of one 12-inch cone driver.
The loudspeaker system shall incorporate internal processing electronics and an open-loop, class-D amplifier. Processing functions shall include frequency correction, phase correction and driver protection. Peak output power shall be 1200 W total with 3 Ω nominal impedance. Distortion (THD, IM, TIM) shall not exceed 0.02%.
Performance specifications for a typical production unit shall be as follows: operating frequency range shall be 35–140 Hz; phase response shall be 45–120 Hz ±30°. Linear peak SPL shall be 123 dB with > 10.5 dB crest factor, measured with M-noise, half-space at 4 m referred to 1 m.
For the analog version, the audio input shall be electronically balanced with a 10 kΩ impedance and shall accept a nominal 0 dBV (1 V rms) signal. The connector shall be a XLR 3-pin female with male loop or optionally a XLR 5-pin female with male loop connector to accommodate both balanced audio and RMS signals. On weather-protected AC units, the connectors shall be 3-pin XLR TOP connectors. For the digital version, the audio format shall be Milan1 Certified and the connector shall be an etherCON TOP.
The internal power supply shall perform automatic voltage selection, EMI filtering, soft current turn-on and surge suppression. Powering requirements shall be nominal 100, 115 or 230 V AC line current at 50 or 60 Hz. UL and CE operating voltage range shall be 100–240 V AC.
Maximum peak current draw during burst shall be 3.6 A rms (115 V AC), 1.8 A rms (230 V AC), and 4.1 A rms (100 V AC).
Current inrush during soft turn-on shall not exceed 20 A at 115 V AC. The AC power connector shall be powerCON. For digital and weather-protected analog units, the AC power connector shall be powerCON TRUE1 TOP with loop output.
The loudspeaker system shall provide facilities for installing Meyer Sound’s optional RMS remote monitoring system on the analog version. Remote monitoring via Compass® control software shall be integrated in the digital version.
All loudspeaker components shall be mounted in an acoustically vented trapezoidal enclosure constructed of premium multi-ply birch with a slightly textured black finish. M8 mounting points shall be included on the top and bottom surfaces. The right side shall include an integrated 35 mm pole mount receptacle with M20 threads. The front protective grille shall be powder-coated, round-perforated steel. Dimensions shall be W: 13.5 in (343 mm) x H: 23.5 in (597 mm) x D: 12 in (305 mm).
Weight shall be 45 lb (20 kg).
The model shall be the Meyer Sound USW-112P.
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Digital Version