U120:1 Power amplifier

Power amplifier 120W, 1 channel

Summary & Images Specs Downloads & Support
  • 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

Introducing the U120:1, a 120 W power amplifier designed to cater to the demands of small to mediumsized 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 centers. Thanks to its compact size, standing just one rack unit high and half rack wide, the U120:1 presents numerous installation possibilities, even in spaceconstrained 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.

Specifications

Electrical
Mains power supply
Voltage100 VAC - 240 VAC, 50/60 Hz
Power400 VA
ConsumptionStandby (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 topologyClass 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 permanentlyf=20 Hz, 12 dB/oct.
LO-CUT switchable, can be activatedf=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 switchesEMG (HiZ/Line level), HPF (120 Hz), Output (HiZ/LowZ), Amp mode (70 V/100 V; 4Ω/8Ω)
Protections
AmplifierAudio 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 OFFContact closure
Inputs
Number of inputs1
Input
TypeLine
ConnectorRCA (chinch), stereo converted to mono, unbalanced; 3-pin Eurostyle, balanced
Sensitivity100 mV
Impedance4.6 kΩ
S/N (flat @max volume)>60 dB
S/N (flat @min volume/muted)>95 dB
Headroom>19 dB
EMG Input
TypeLine; 100 V
Connector2-pin, balanced
S/N(A-weighted) ≥98 dB
Loudspeaker output
Connector4-pin Eurostyle (2 pin for LowZ, 2 pin for HiZ)
Rated output power120 W
Max output voltage, 1 kHz, THD=0.5%, no load4 Ω 8 Ω 70 V 100 V
22 VRMS 32 VRMS
Mechanical
Enclosure
IEC protection classClass I (grounded)
Dimensions (HxWxD), without acessories44.2 mm x 218 mm x 217.7 mm
(1.74 in x 8.6 in x 8.57 in)
Color in RALRAL 9017 Traffic black
Net weight (without accessories)1.86 kg
(4.10 lb)
Net weight (with accessories)2.32 kg
(5.11 lb)
Shipping weight2.68 kg
(5.90 lb)
MountingStand-alone; 19" rack; rack side-byside; half 19" rack; table-top; undertable
Environmental
Climatic conditions
Cooling conceptFour-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)

Downloads

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Dynacord & Electro-Voice, together with our certified partners, are ready to help support you through planning, purchase, and setup. Services available through our network of highly-qualified associates and partners may include:

  • System Design
  • Installation
  • Programming & Commissioning

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