Abox 66n is an audio processor mainly used for local education and remote interactive education. It is equipped with digital audio processing technology with excellent performance, including full band adaptive echo cancellation, automatic noise suppression, feedback suppression algorithm, and remote pickup microphone. It is easy to install, operate and easily meet the high-quality voice requirements of local recording and remote interactive education.
Front panel controls：
| Indication and knob | Function description |
| POWER | Power indicator light, always on after power on |
| SYS | Operation indicator light, slow flashing indicates normal operation |
| MIC1 & MIC2 | Gain adjustment of MIC channel 0 ~ 30dB |
| Phantom | Mic channel 48V phantom power switch |
| Bypass | Algorithm switch |
| USB | System debugging port |
Rear panel interface：
| Indication and knob | Function description |
| MIC | Microphone input interface, supporting two-way microphone access, with 20dB gain adjustment knob |
| AEC REF | Two (left and right channels) linear input interfaces, usually connected to the remote signal, i.e. reference signal, in interactive and remote teaching |
| LINE IN | 2 (left and right channels) linear input interfaces, usually connected to local audio sources, such as DVD, notebook, etc |
| SPK | Signal output channel |
| AEC OUT | Two (left and right channels) linear output interfaces, usually used as local signal output channels to the remote end in interactive and remote teaching |
| LINE OUT | 2 (left and right channels) linear output interfaces, usually used for external power amplifier or active speaker |
| DC 12V | 12V external power interface |
Product characteristics：
· Built in echo cancellation, feedback suppression, noise algorithm
The stable double talk detection method can effectively eliminate the redundant echo even in the strong background noise and nonlinear distortion environment; the noise suppression algorithm can quickly and accurately track the environmental noise changes and maintain good output sound quality.
· Two channel MIC input
Two microphone interfaces are provided to support gain adjustment and 48V phantom power supply. Increase the flexibility of users' use, and meet users' use needs to the greatest extent.
· Plug and play, portable operation
The pre-set scene, without software adjustment, plug and play, has strong universality, flexible and convenient deployment, greatly reducing the difficulty and cost of engineering wiring.
Detailed parameters:
| Equivalent noise(20Hz~20kHz, 22dB Gain) | <-103dBu |
| Dynamic range (20Hz~20kHz, 0dB) | > 100dB |
| Maximum output level (balanced) | 10dBu |
| Output impedance | 100Ω |
| Sampling rate | 48KHz |
| A/D-D/A Converter | 24bit |
| Phantom Power | +48 VDC |
| MIC channel | |
| Frequency response (20Hz~20kHz @ +4dBu) | +0/-0.2dB |
| THD +N (1kHz @ +4dBu) | < 0.0035% |
| Maximum input level | -18dBu (VOL Maximum) 8dBu (VOL Minimum) |
| Maximum gain | 30dB |
| Input impedance | 20kΩ |
| Line in channel | |
| Frequency response (20Hz~20kHz @ +4dBu) | +0/-0.2dB |
| THD +N (1kHz @ +4dBu) | < 0.005% |
| Maximum input level | 8dBu |
| Maximum gain | 3dB |
| Input impedance | 20kΩ |
| Channel isolation | -95dB |
| Bottom noise (A-weighted) | -98dBu |
| Working temperature | 0-40℃ |
| Working power supply | DC 12V |
| Power consumption | <8W |
+86-13302998794
9th Floor, 1B, Shangzhi Technology Park, Guangming District, Shenzhen City, Guangdong Province, China
Copyright © S-TRACK SCIENCE & TECHNOLOGY CO., LTD.
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