User Manual

www.redbackaudio.com.au Redback® Proudly Made In Australia 13
Redback® A 4270/80 Four Zone Paging PA Amplier
Fig 14
This MP3 le needs to be deleted and replaced by the MP3 le you want to play when you activate the Alert mode. The
MP3 le name is not important. But it is important that there is only one MP3 le in the Alert folder.
Check the properties of the MP3 le.
NOTE the new MP3 le cannot be “Read only”.
To check this, right click on the MP3 le and scroll down and select Properties, you will get a window that looks like gure
15.
Make sure the “Read Only” box has no tick in it.
The new MP3 is now installed on the card. Repeat these steps for the other MP3 folders if you need to.
The card can be removed from the PC following windows safe card removal procedures. Make sure the amplier is OFF
and insert the SD card into the slot in the rear; it will click when fully inserted. The amplier is ready to use.
Fig 15