DP-L2

Digital Ambient Noise Controller

Discontinued

DP-L2

The DP-L2 is a digital audio processor equipped with 2 Inputs, 2 Outputs, 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
Easy, quick installation and simple operation
1-unit size

Specifications Related Products Downloads

Power Source

220 – 240 V AC, 50/60 Hz

Power Consumption

20 W (220 mA)

Frequency Response

20 Hz – 20 kHz, ±1 dB

Sampling Frequency

48 kHz

Dynamic Range

108 dB (IHF-A weighted) or more

Distortion

0.006% or less, 1 kHz, + 4dB* input/output (20 Hz - 20 kHz BPF)

Input

Sensor input (Ambient noise sensor microphone input): +4/–48 dB* changeable, 10 kΩ, electronically-balanced, removable
terminal block (4 pins), phantom power (+15 V DC, can be turned on or off with Phantom switch) with +15 V DC terminal
Input 1, 2: +4/–8/–20 dB* changeable, 15 kΩ, electronically-balanced, removable terminal block (3 pins)

Output

Monitor output: +4 dB*, 600 Ω, electronically-balanced, removable terminal block (3 pins)
Output 1, 2: +4 dB*, 600 Ω, electronically-balanced, removable terminal block (3 pins)

A/D Converter

24 bit

D/A Converter

24 bit

Digital Signal Processing

Automatic Level Control Function

Level meter (4 LED meters), Automatic input signal level control function, Automatic input sensitivity setting function (+4/–8/–20 dB*), Noise gate level setting (–99 to –3 dB)

ANC (Ambient Noise Control)

Level meter (4 LED meters), BGM/Announce level control function, Automatic sensor input reference level measuring function, Sensor input reference level fine adjustment function, Maximum output signal level control (–15 to 0 dB), Minimum output signal level control (–18 to –3 dB), Sample time setting (10 s, 20 s, 30 s, 1 min, 5 min), Gain ratio setting (6:3, 5:3, 4:3, 3:3, 3:4, 3:5, 3:6), Ambient noise measuring frequency setting (20 Hz – 20 kHz, 3 points)

Maximum Output Signal Level Control Function

–12, –6, 0, +4, +6, +12, +18, +24 dB*

Input Level Indicator

8 LEDs indicator

Output Level Indicator

8 LEDs indicator

Other Feature

Phantom power switch (sensor input), Key lock function, Ground lift switch (INPUT 1, INPUT 2), Input/Output byass function in power off

Operating Temperature

0 ºC to 40 ºC (32 ºF to 104 ºF)

Operating Humidity

90% RH or less (no condensation)