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8 Channel Amplifier

8 Channel Amplifier

DA8250 8 Channel Digital amplifier 9 channels: 8 main amplifiers, 1 standby amplifier. Active/standby switching function: 8 main channels can use their respective main amplifiers, and they can also automatically/manually/remotely invoke standby power amplifier. Each amplifier channel has independent input and output interfaces, and one input corresponds to one output. Each amplifier can independently adjust the volume, the volume adjustment can be performed by the machine and remotely. High power switching design, with protection of over voltage, over current, high temperature, and short circuit.

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DA8250 8 Channel Digital amplifier

Equipment Introduction

The DA8250 device is an eight-master-one-standby-amplifier that integrates eight power amplifier modules and a sub-module and can control eight broadcast intervals. When one of the sections fails, the standby channel can also be used to continue broadcasting.


Functional Features

Touch screen design, user-friendly.

9 channels: 8 main amplifiers, 1 standby amplifier.

Active/standby switching function: 8 main channels can use their respective main amplifiers, and they can also automatically/manually/remotely invoke standby power amplifier.

Each amplifier channel has independent input and output interfaces, and one input corresponds to one output.

Each amplifier can independently adjust the volume, the volume adjustment can be performed by the machine and remotely.

High power switching design, with protection of over voltage, over current, high temperature, and short circuit. 

Status, volume, temperature and other operating parameters of this power amplifier can be displayed on LCD screen or remote host.

0 ~ 100V constant voltage output.

Each module supports hot swap.

A remote control host can connect and control multiple power amplifiers at the same time.

With a communication interface, you can cascade multiple amplifiers.

 

Description of Appearance

 

Front panel instructions

 

1. Display screen

Touch screen can display temperature, volume and power and working status of the module. You can touch screen to replace the current module by standby module.

2. Protection indicator(PROT)

This indicator lights up when the machine is automatically protected by a fault.

3. Pressure limit indicator(CLIP)

4. Output level indicator(SIG)

5. Power Indicator(PWR)

The indicator is turn on when the power of this channel is turn on.    

6. Module replacement plug hole

There is no need to power off the power amplifier board when replacing it. Put the finger directly into the socket and remove the power amplifier board. Then insert the new power amplifier board into the slot, and push it in place. The red light will be on. The corresponding channel display status of the LCD is normal, and the power amplifier board is in normal working condition.

When an amplifier module reports information “failure” on the LCD, the power amplifier board needs to be replaced.

Note: When you do not need to replace the module, do not insert your finger into the insertion hole to avoid broadcast interruption.

2.2 Rear panel description

                                                                                                                                                                                                     

1. AC220V power input interface

When the interface is connected to the AC grid, first connect the interface and turn on the power switch.

2. Main Amplifier Channel Output 100V Positive Terminal and COM Output Ground Terminal

The 100V output of the eight main power amplifier channels is the positive output of the channel, and the channels of the eight main power amplifiers are independent from each other.

The output ground of eight main power amplifier channels is the same as the ground of the channel, and the channels of the eight main power amplifiers are independent from each other.

3. The logo means "applicable to altitudes up to 2000 meters above sea level and non-tropical climate safety.

4. Eight channel input interface

It is used to input the audio sources of eight channels respectively. It can be connected to peripheral audio source equipment. It is mainly used to connect the eight output interfaces of the intelligent host partition output module. One interface corresponds to one audio source.

5. This interface is used for expansion.

6. Main power switch

  When starting up, plug in the plug to the ~220V AC outlet and turn on the power switch.

  When shutting down, turn off the power switch first and then pull out the machine plug.

 

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