Ambient Noise Controller

The DP-L2 is a digital audio processor equipped with 2 Input, 2 Output, 1 ambient noise sensor microphone input and 1 monitor output and features easy setting of each function by the front panel operation. It is equipped with an ambient noise control function (The ANC function distinguishes between the unit's output sound and the ambient noise. The unit's output sound is not detected as noise.) and an automatic level control function that keeps the input signal level constant. It can be mounted in an EIA Standard equipment rack (1 unit size).

  • Digital audio processor adjusts BGM / announcement sound volume to match changes of ambient noise
  • Automatic and accurate input and output sound level adjustment
  • Output excluded from ambient noise sensing, therefore no problem with te installation location of the sensor microphone
  • Easy, quick installation and simple operation
  • 1-unit size

  • Specifications
  • Application examples
  • Tender text
  • Downloads
Specifications for product:
Power source

220 - 240 V AC, 50 / 60 Hz

Frequency response

20 Hz - 20 kHz (±1 dB)

Dynamic range

Over 108 dB (IHF-A weighted)


< 0.006 % (at 1 kHz)

Power consumption

20 W

Current consumption

0.22 A


Sensor Input, Input 1 & 2 (removable terminal block)


Monitor Output, Output 1 & 2 (removable terminal block 3 pins)

A/D, D/A Converter

24 bit

Signal processing

Automatic level control, ambient noise control, maximum output signal level control, input level indicator, output level indicator

Sampling frequency

48 kHz

Other features

Phantom power switch (sensor input), key lock function, ground lift switch (INPUT 1, INPUT 2), input/output bypass function in power off

Operating humidity

90 % RH or less (no condensation)

Operating temperature

0 °C to +40 °C


Steel plate, pre-coated, 30% gloss, black


482 x 44 x 303 mm (W x H x D)


3.7 kg

Accessory (included)

Removable terminal plug (4 pins) x 1, removable terminal plug (3 pins) x 5

Application examples
Tender text