Introducing the U120:1, a 120 W power amplifier designed to cater to the demands of small to medium sized installations, where paramount considerations include quality, performance, and unwavering reliability. This amplifier is ideal for background music and crystal-clear voice announcement applications, making it a perfect fit for diverse environments such as bars, restaurants, retail outlets, educational institutions, houses of worship, museums, galleries, transport hubs, and conference centres. Thanks to its compact size, standing just one rack unit high and half rack wide, the U120:1 presents numerous installation possibilities, even in space-constrained settings. Included brackets facilitate both single and dual rack-mount configurations, while desktop and under-counter installations are equally viable. When rack-mounted side by side, two amplifiers can seamlessly inhabit a single rack unit, optimizing space utilization and effectively doubling both channel count and output power.

Product Features

• 120W Rated Output Power
• Full power output supporting 4Ω, 8Ω, 70 V and 100 V
• EMG override input, ensuring critical messages are heard clearly
• Contact override with 2-tone chime for attention-grabbing alerts
• 120 Hz high-pass filters to customize audio output and eliminate unwanted low-frequency noise
• Space-saving compact ½ rack design, providing versatility without compromising performance
• Remote activation of standby mode with Remote OFF (Stand by), enhancing energy efficiency

Product Specifications

Electrical

• Mains power supply
• Voltage: 100 VAC - 240 VAC, 50/60 Hz
• Power: 400 VA
• Consumption: Standby (Remote OFF active) 1.25 W
• Idle mode 9 W / 11 W
• Remote power (ON/OFF Stand by): 2-pin, Eurostyle, contact closure

Performance

• Frequency response, -3 dB ref. 1 kHz
• Any input to output: <10 Hz — 22 kHz
• Distortion: <1% @rated output power, 1 kHz
• Output stage topology: Class D
• Equalization
• Bass shelving: ±12 dB / 150 Hz — 3 dB (100 Hz)
• Treble shelving: ±12 dB / 5 kHz — 3 dB (10 kHz)
• Filter
• LO-CUT permanently: f=20 Hz, 12 dB/oct.
• LO-CUT switchable, can be activated: f=120 Hz, 12 dB/oct.

General

• Front status LEDs
• Protect (Red): Protection, short circuit
• Peak (Red): 1 dB before clip (input and output)
• Signal (Green): Input and output signal
• Call (Green): EMG
• Power (Green): Power on condition
• DIP switches: EMG (HiZ/Line level), HPF (120 Hz), Output (HiZ/LowZ), Amp mode (70 V/100 V; 4Ω/8Ω)
• Protections
• Amplifier: Audio limiters, high temperature, DC, HF, short circuit, over current protection
• Switching mode power supply (µPC controlled): Mains over/under voltage protection, inrush current limiter, mains over current, high temperature
• Remote power OFF: Contact closure
• Inputs
• Number of inputs: 1
• Input
• Type: Line
• Connector: RCA (chinch), stereo converted to mono, unbalanced; 3-pin Eurostyle, balanced
• Sensitivity: 100 mV
• Impedance: 4.6 kΩ
• S/N (flat @max volume): >60 dB
• S/N (flat @min volume/muted): >95 dB
• Headroom: >19 dB
• EMG Input
• Type: Line; 100 V
• Connector: 2-pin, balanced
• S/N: (A-weighted) ≥98 dB
• Loudspeaker output
• Connector: 4-pin Eurostyle (2 pin for LowZ, 2 pin for HiZ)
• Rated output power: 120 W
• Max output voltage, 1 kHz, THD=0.5%, no load:
  • 4 Ω 8 Ω 70 V 100 V
  • 22 VRMS 32 VRMS

Mechanical

• Enclosure
• IEC protection class: Class I (grounded)
• Dimensions (HxWxD), without acessories: 44.2 mm x 218 mm x 217.7 mm (1.74 in x 8.6 in x 8.57 in)
• Colour in RAL: RAL 9017 Traffic black
• Net weight (without accessories): 1.86 kg (4.10 lb)
• Net weight (with accessories): 2.32 kg (5.11 lb)
• Shipping weight: 2.68 kg (5.90 lb)
• Mounting: Stand-alone; 19" rack; rack side-byside; half 19" rack; table-top; undertable

Environmental

• Climatic conditions
• Cooling concept: Four-stage-fans (Off / Slow / Medium / Fast)
• Operating temperature: -5°C — 45°C (23°F — 113°F)
• Storage temperature: -40°C — 70°C (-40°F —158°F)