volume controller DS-M9300

 Features:

1. Used to control the volume of stereo audio;

2. The panel has the function of LED real-time display of the amount between each channel;

3. It has eight-channel synchronous or asynchronous tuning function, and supports 7.1-channel tuning mode;

4. With sound squelch processing;

5. Manual button/computer software/central control system control mode;

6. Adopt NE5532 post-stage compensation circuit;

7. Power-off state saving function;

8. Support microphone volume adjustment;

9. High-fidelity volume adjustment, including left channel, right channel, treble and bass adjustment;

10. Volume fade out processing function (the volume is slowly reaching the last volume state);

11. Applicable to other central control systems such as Amartop and others;

12. It is suitable for high-end conference rooms, multi-function halls, combat command centers, auditoriums, supermarket background music systems, etc.;

13. Triple independent control mode, manual and computer software, RS-232;

14. The whole machine passed the 15KV antistatic test

 Audio section:

Volume channel output impedance: 10Ω

Input and output: balanced or unbalanced

Total Harmonic Distortion: -85DB

Noise: -85DB

Input level: 1VPP

Channel spacing: -90DB

Mute: -104DB

Attenuation range: (non-mute) 0-83DB

Frequency response: 8HZ-60KHZ

 Control method:

1. Manual button

2. Computer software

3. RS-232 protocol

 Baud rate and protocol:

Serial control interface: RS-232, 9-pin male D-type connector

Baud rate 9600

Data bits: 8 bits,

stop bit: 1,

Check Digit: No Parity

Serial control port structure: 2 = TX, 3 = RX, 5 = GND

Control program: "Version 3.0"

 Specifications:

Power: 220VAC, 50/60 Hz

Power: 10W

Temperature: -30° ~ +80°C

Humidity: 10% ~ 90%

Shell: aluminum brushed panel, metal material shell