Detailed Instructions—Page 8
2.3) Changing the audio files on the MP3 Player.
Overview :
The A1741 unit plays MP3 files on demand as controlled
by the PA system timer and control box. Each file is
placed in a specific folder.
The name of the file is not important.
Only the folder in
which the file is placed matters.
For example : When the “line up music” starts (C2 timer
channel), the system will look for whatever file is located in “trig2”
and start playing it. When the timer switches off again, the playout
will stop.
If you want to change the line up music, simply change
the file in the “trig2” folder on the SD card.
The “alert” and “pre announce chime” files should NOT be
changed as these are a specific length, and changing them may
prevent the system from working properly.
Create Multiple SD Cards:
You can easily change your play out files by simply preparing
multiple SD cards and then changing the card in the play out box
say, each morning.
To prepare an additional SD card first get the existing card out of
the unit. Create a new directory on your computer and then copy
all the directories off the SD card to the directory on your
computer.
Then insert the new SD card in your computer and copy the
directories from your computer onto the new SD card so it is
identical to the existing one.
Now you can easily and safely change the data on either SD
card.
Changing files:
The most commonly changed file on your system is likely to be
“trig2” (Line up Music) which is normally 2 mins long. However
many schools also change the Bell (trig1), often to a recording
of their own school yard bell or similar.
Wet Weather (trig3) can also be changed. “trig4” is undefined so you can use it for any purpose such as a special
message for assemblies etc. We advise against changing the “evac” file however some schools change it to include
voice announcements to assist with school evacuation such as directing people where to go, etc.
Vo
lume Levels:
Please note that the volume level of ALL the files is controlled by a single “tones and music” knob on the amplifier (ref
page 4).
Care should be taken when loading any alternative files to make sure they are not too soft or loud.
The Bell (trig1) should be recorded as LOUD AS POSSIBLE so everyone hears it clearly.
The LINE UP MUSIC (trig2) should be recorded on average about 10dB quieter than the other sounds. Because this file
runs longer, it is likely to become a problem both for school staff and for your neighbours if it is repeatedly played too
loud. We recommend you adjust the overall level of music files by using an “audio editor” program such as Adobe
Audition or Audacity to recode your sound file before saving it onto the SD card.
The Alert and Evacuate files have been preset at a reduced level when your system was installed. The last thing you
need when evacuating a school is a siren blowing your head off when you’re trying to move kids about and mark rolls!
To Remove / Insert SD Card
1.) Push on card , it will then pop out.
2.) Remove card
3.) Push back in until “click” and leave.
Pre Loaded Files:
The current files were pre loaded onto your system SD card when
your system was installed.
alert—Standard lock down tone (DO NOT CHANGE)
evac—Standard evacuate tone
trig1— Bell tone (6 secs)
(Currently 4 tone Inter M PE9103A chime)
trig2— Line Up Music Song—usually 2 mins
(Beautiful day)
trig3—Wet Weather Call / Song (Usually 30 secs)
(Ian Moss—Mr Rain)
trig4—User Defined
(currently 1 hour system test file)
trig5—Pre Announce Chime (3 secs) (DO NOT CHANGE)
trig6—not in use
trig7—not in use
trig8—not in use
voice—not in use
xbackup—Directory contains backup of all above folders