An extremely compact, self-powered system, the UMS-1P ultra-compact subwoofer provides powerful low-frequency extension in applications where both excellent audio quality and an unobtrusive cabinet size are required. The system's output is 127 dB peak SPL within its operating range of 25 Hz to 160 Hz. Although designed primarily as a companion for Meyer Sound's UPM-1P wide coverage and UPM-2P narrow coverage ultra-compact loudspeakers, the UMS-1P is equally adaptable for use with other Meyer Sound models such as the HD-1 high-definition studio monitor. The UMS-1P may be used singly or stacked to provide even greater low-frequency output.
FEATURES AND BENEFITS
The loudspeaker shall be a self-powered, sub-bass system able to be used singly or ground-stacked in multiples. The transducers shall consist of two 10 in cone drivers with 2 in voice coils, each rated to handle 400 AES W. (Driven continuously for two hours with band-limited noise signal having a 6 dB peak-average ratio.)
The loudspeaker shall incorporate internal processing electronics and a two-channel amplifier. Each amplifier channel shall be class AB/bridged with complementary MOSFET output stages. Burst capability shall be 800 watts total with a nominal impedance of 4 ohms both channels. 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 25–160 Hz; phase response shall be 41–155 Hz ±30°; linear peak SPL shall be 123 dB measured in half‑space with M-noise at 4 m referred to 1 m. Beamwidth shall be 360deg for a single unit. Directional characteristics can be achieved with multiple cabinets. The audio input shall be electronically balanced with a 10 kΩ impedance and accept a nominal 0 dBV (1 V rms) signal (+20 dBV to produce maximum peak SPL). Connectors shall be XLR 3-pin female with male loop. Two additional input module options shall be offered with an attenuator and polarity reversal switch; one with loop-through output, and another with two summing inputs instead of the loop-through input and output.
Two versions of the loudspeaker shall be available: a switchable 115/230 V and a non-switchable 100 V version. The voltage selection must be manually selected. The internal power supply shall perform EMI filtering, soft current turn-on and surge suppression. Powering requirements shall be nominal 100 V AC (100 V version) and 110 or 230 V AC (115/230 version) line current at 50 or 60 Hz. UL and CE operating voltage range shall be 115–240 V AC. Ultimate short-term peak current draw shall be 2.9 A at 115 V AC, 2 A at 230 V AC and 3.3 A at 100 V AC. Current inrush during turn-on shall not exceed 18 A at 115 V AC. AC power connectors shall be PowerCon with looping output. The loudspeaker system shall provide facilities for installing the optional RMS remote monitoring system.
All loudspeaker components shall be mounted in an acoustically vented rectangular enclosure constructed of premium multi-ply birch with a slightly textured black finish. The front protective grille shall be powder‑coated hex-stamped steel with black mesh. Dimensions shall be W: 22.75 in (578 mm) x H: 16.30 in (414 mm) x D: 17.51 in (445 mm)—16 in (406 mm) without grille. Weight shall be 62 lb (28.10 kg). A pole mount for supporting a UPM-1P or UPM-2P shall be fitted as standard.
The loudspeaker shall be the Meyer Sound UMS-1P.
Keyword: Loudspeaker, Loudspeakers
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