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www.redbackaudio.com.au

Redback® Proudly Made In Australia

Redback® A 4270/80

Four Zone Paging PA Amplifier

User manual revision number: 1.2 23/09/2021

Operating Manual

A 4270

125 WATT FOUR ZONE PAGING PA AMPLIFIER

A 4280

250 WATT FOUR ZONE PAGING PA AMPLIFIER

IMPORTANT NOTE:

Please read these instructions carefully from front to back prior to installation.

They include important setup instructions.

Failure to follow these instructions may prevent the unit from working as designed.

Redback® Proudly Made In Australia

Distributed by Altronic Distributors Pty. Ltd.

Phone: 1300 780 999 Fax: 1300 790 999 Internet: www.altronics.com.au

Optional Extras

A 2280B

Remote Volume Wall Plate

A 4373

Remote Volume Module

A 4376

Rack Mount Ears

A 4488

Four Zone Paging Console

Содержание A 4270

Страница 1: ...se read these instructions carefully from front to back prior to installation They include important setup instructions Failure to follow these instructions may prevent the unit from working as design...

Страница 2: ...users reliable products of high build quality with local product support We believe there is significant added value for customers when purchasing an Australian made Redback amplifier or PA product Lo...

Страница 3: ...Thermal overload overcurrent and overload protection circuitry and fuses on both AC and DC provide excellent fault condition protection and robust performance The amplifier also utilises a half power...

Страница 4: ...tes when the input signal is clipping 11 OverLoad Indicator This LED indicates when the output is drawing too much current from the amplifier The output will be disconnected until the current draw is...

Страница 5: ...ore details 7 Inputs 1 3 These inputs can be either a balanced XLR input with sensitivities of 500mV or dual RCA line inputs with a 1V input sensitivity The line input dual RCA connectors are internal...

Страница 6: ...one inputs have DIP switch selectable phantom power When enabled 15V DC will be connected to the Hot and Cold pins of the corresponding XLR To access the DIP switches first disconnect power from the u...

Страница 7: ...of connecting speakers in parallel and cable losses The amplifier generally has an output voltage of 100 volts 70 volts is typically used in North America however operation is similar In this configu...

Страница 8: ...ging consoles can be connected as shown The paging consoles provide paging to all four output zones and will override the background music to those zones refer to section 13 0 for more details Fig 6 R...

Страница 9: ...from the amplifier 2 RJ45 connector For connection back to the A 4270 or A 4280 Either port can be used 3 DIP switch options These switches set the pre announcement chime and set the ID number 4 BGM B...

Страница 10: ...o the 3 5mm input jack on the rear of the paging microphone as shown in Figure 10 This provides a local source of background music To activate the background music first make sure the Push to Talk PTT...

Страница 11: ...hown in figure 11 The messages have to be recordered in MP3 format using any readily available PC software or other means and then transferred to these folders Activating the Voice Over Message Voice...

Страница 12: ...ts of the SD Card include a Library folder of sample MP3 files and five folders for the MP3 files associated with the various triggers There should be default MP3 files included in each folder These w...

Страница 13: ...e MP3 file NOTE the new MP3 file cannot be Read only To check this right click on the MP3 file and scroll down and select Properties you will get a window that looks like figure 15 Make sure the Read...

Страница 14: ...lifier and insert it into your PC Follow the steps on page 11 to open the SD card 3 Extract the contents of the Zip file to the root folder of the SD Card 4 Rename the extracted BIN file to update BIN...

Страница 15: ...Pin XLR OUTPUT CONNECTORS Speakers Screw terminals INPUT CONNECTORS Inputs 3 pin XLR balanced or 2 x RCA 24V DC power Screw terminals 240V AC power IEC power connector MUTING PTT via microphone switc...

Страница 16: ...r Amplifier The Redback A 4395A is a 500 Watt Mixer amplifier for installations requiring a high power zone amplifier The amplifier has two audio inputs with input 1 either a balanced XLR input or dua...

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