Digital Ambient Noise Controller, 2 Line Inputs, 2 Line Outputs, 1 Mic Sense Input
By: TOA
Premier Commercial Audio & Security
TOA : DP-L2
Description
The TOA DP-L2 Digital Ambient Noise Controller is a rack-mountable digital audio processor that automatically adjusts output volume in response to changing ambient noise levels. Typical applications include airports, shopping malls and restaurants.
Conventional ambient noise controllers simply add the output to the ambient noise, making manual compensation adjustments necessary. The DP-L2 features a superior automatic level control (ALC) algorithm that automatically adjusts the input signal to maintain a level suitable for the surrounding ambient noise level, ensuring an appropriate input signal level at all times.
Features
DP-L2 features include:
- Digital ambient noise control (ANC) function with 4-LED metering automatically makes adjustments to output gain to match changes in ambient noise levels
- Distinguishes unit output sound level from ambient noise levels for more accurate automatic noise control
- Maximum output function acts as a limiter
- Microphone input reference level adjustment function with phantom power switch
- Eight-LED input and output level metering on front panel
- A built-in key lock function protects against accidental change of settings
Specifications
| Frequency Response | 20Hz to 20kHz, +/-1dB |
| Dynamic Range | Over 108dB (IHF-A weighted) |
| Input Connections | Terminal block |
| Output Connections | Terminal block |
| Input Impedance | 15kΩ |
| Output Impedance | 600Ω |
| Maximum Input Level | Not specified by manufacturer |
| Maximum Output Level | +24dB |
| Sample Rate | 48kHz |
| RTA Mic Phantom Voltage | +15VDC |
| THD & Noise | Under 0.006%, 1kHz, +4dB input/output |
| Dimensions (WxDxH) | 19" x 12" x 1 3/4" (482 x 303 x 44 mm) |
| Weight | 8.1 lb (3.7 kg) |
Resources & Documents
| dp-l2.pdf | Datasheet |