U240:1M Mixer Amplifier 1Ch 240W 4Ω/8Ω/100V Half-Rack 1U

Product Features

• Rated output power: 240 W
• Versatile inputs: 4 inputs, 2 mic/line options with phantom power 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
• 70 Hz and 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
• VOX Ducking that automatically adjusts background music volume for clear voice communication
• 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:  800 VA
  • Consumption:
    • Standby (Remote OFF active) 1.25 W
    • Idle mode 11 W / 12 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
  • Any input to LINE output:  <10 Hz — 65 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 / priority trigger / Vox input active
  • Power (Green):  Power on condition
  • DIP switches:  EMG (HiZ/LowZ), Two-tone Chime (ON/OFF), HPF (120 Hz), VOX (ON/OFF), Phantom power (+48 V/OFF) 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:  2 mic/line, 2 aux (+EMG)
• Sensitivity with all level controls in max. position
  • MIC / Call station:  -68 dBu (300 µV)
  • AUX (only L or R):  -22 dBu (60 mV)
  • AUX (Stereo) (L and R):  -28 dBu (30 mV)
• Maximum input level
  • MIC / Call station:  +8 dBu
• Input impedances
  • MIC / Call station:  10 kΩ
  • AUX:  4.7 kΩ
  • EMG (Line):  >15 kΩ
  • EMG (HiZ):  >470 kΩ
  • LINE (L and R):  75 Ω
  • Noise, MIC input to output, Aweighted, (HiZ 100 V):  -58 dBu
• Input 1
  • Type:  Mic/Line, contact override with chime
  • Connector:  3-pin XLR, balanced / 5-pin Eurostyle, balanced (3 pin for input, 2 pin for trigger
  • Dynamic range:  61 dB (Mic gain min — max)
  • S/N (A-weighted):  ≥98 dB
  • Phantom power supply, switchable:  48 V DC
• Input 2
  • Type:  Mic/Line, VOX ducker override
  • Connector:  3-pin XLR, balanced
  • VOX Ducking:  Ducking control 0 dB — -45 dB
  • VOX Threshold:  -60dBu — +8 dBu, adjustable
  • Dynamic range:  61 dB (Mic gain min — max)
  • S/N (A-weighted):  ≥98 dB
  • Phantom power supply, switchable:  48 V DC
• Input 3
  • Type:  Line
  • Connector:  RCA (chinch), stereo converted to mono, unbalanced
  • S/N (A-weighted):  ≥98 dB
• Input 4
  • Type:  Line
  • Connector:  RCA (chinch), stereo converted to mono, unbalanced
  • S/N (A-weighted):  ≥98 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:  240 W
  • Max output voltage, 1 kHz, THD=0.5%, no load:
    • 4 Ω 8 Ω 70 V 100 V
    • 31 VRMS 45 VRMS

Mechanical

• Enclosure
  • IEC protection class:  Class I (grounded)
  • Dimensions (HxWxD), without accessories:  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):  1.85 kg (4.07 lb)
  • Net weight (with accessories):  2.31 kg (5.09 lb)
  • Shipping weight:  2.67 kg (5.88 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)