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WavBox
WavBox is a compact low powered audio player with a
built in 20Watt class 'D' stereo amplifier that plays *.wav
formatted audio files.
WavBox operates as a standalone audio player,
automatically booting and playing content from its on-board
SD card as soon as power is applied or controlled via its
serial interface. In addition, it can also be configured to be
trigged via 1 of its 6 digital inputs using either buttons or
PIR's for example.
Its compact size and low power consumption makes the WavBox ideal for integration into interactive
displays and audio guides.

Key Features

Stereo line level output.
Stereo 20Watt per channel class 'D' amplifier output.
Mono 40Watts class 'D' amplifier output when configured in "bridging mode".
Standalone playback from on-board SD card of WAV formatted audio files.
WAV (PCM or IMA ADPCM) file formats.
Play / Stop control via push button, contact closure and RS232.
Volume control via push button, contact closure and RS232.
Amplifier muting via contact closure.
Audio Loop-thru function, accessed via push button, contact closure and RS232.
6 direct audio trigger digital inputs.
Random play via contact closure input and RS232.
Sequential play via contact closure input and RS232.
Status messaging via the RS232 interface.
Volume feedback via RS232 command.
Playback control of up to 20 messages via the RS232 interface
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Table of Contents
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Summary of Contents for FEAR FX WavBox

  • Page 1: Key Features

    In addition, it can also be configured to be trigged via 1 of its 6 digital inputs using either buttons or PIR’s for example. Its compact size and low power consumption makes the WavBox ideal for integration into interactive displays and audio guides. Key Features ...
  • Page 2: Table Of Contents

    Audio Loop-thru ............................7 Control Protocol ............................8 Status messages: ..........................9 RS232 Connection ..........................9 Connections .............................. 10 Specification: ............................. 11 Dimensions: ............................... 12 Procedure for upgrading firmware on a WavBox player: ................. 13 Known Issues:............................144 Page | 2...
  • Page 3: Operation

     Volume control, volume levels are stored after adjustment.  Audio loop-thru, routes the 'Audio In' jack to the WavBox output.  Reset – Restarts the player it is also used to exit loop-thru mode. These functions (apart from Reset) are also available on screw terminal connections.
  • Page 4: Example Hook-Ups

    Example Hook-ups Page | 4...
  • Page 5 Baud rate: 9600, 8, N, 1 Pin 2 Pin 3 Pin 2 Pin 5 Pin 2 Change Amp mode to Bridged Normally Open Relay Output Relay Common 12v Power Ground Page | 5...
  • Page 6: File Naming Convention

    File naming convention The file names provide the association with inputs as well as determining if a file will be interruptible or not. The format is as follows:- IRaudio_Z.wav Z - Interruptible Flag I or i = file interruptible N or n = file not interruptible audio_ –...
  • Page 7: Audio Loop-Thru

    Audio Loop-thru A 3.5mm stereo jack is provided to connect an external audio source to the WavBox. This can be used to allow audio to be tested, through the amplifier, prior to transferring it to the SD card. Ensure a SD card is inserted prior to enabling loop-thru.
  • Page 8: Control Protocol

    Control Protocol The control protocol consists of a single byte ASCII command without a terminator. Baud rate: 9600, 8, N, 1 List of Commands: Command Description Command Description Play file 01audio_Z.wav Play file 11audio_Z.wav Play file 02audio_Z.wav Play file 12audio_Z.wav Play file 03audio_Z.wav Play file 13audio_Z.wav Play file 04audio_Z.wav...
  • Page 9: Status Messages

    Pin 3 Receive Pin 5 Ground Baud rate: 9600, 8, N, 1 The RS232 port on the WavBox player can be used for controlling the player; it also provides status messages and is used for updating the firmware. Page | 9...
  • Page 10: Connections

    Connections Connection IO terminal Audio terminal Connection RS232 Transmit Mute Ground RS232 Receive Mute Amplifier RS232 Ground Ground LED Supply Audio Loop-Thru Playing LED Output Play Status LED Output Volume - 01audio_Z.wav Volume + 02audio_Z.wav Buffered Gnd (DNC) 03audio_Z.wav Audio Ground 04audio_Z.wav Audio out Right 05audio_Z.wav...
  • Page 11: Specification

    Specification: 12 – 24 vDC @ 2.5A. (maximum) Power supply: Stereo 20 Watts @ 24v into 4Ω. Bridged 40 Watts @ 24v into Amplifier rating: 8Ω Audio storage: SD Card Audio file format: WAV (PCM + IMA ADPCM) PCM - 16 and 8 bits, any sample rate ≤ 48 kHz IMA ADPCM - Any samplerate ≤...
  • Page 12: Dimensions

    Dimensions: Page | 12...
  • Page 13: Procedure For Upgrading Firmware On A Wavbox Player

    If you use a COM port other than COM1, edit the "uniprom.bat" file's "-p #" parameter. The name of the file is always "eeprom.img".  Connect WavBox player RS232 connection to COM 1 on the computer (see note above on how to select a port other than COM 1). ...
  • Page 14: Known Issues

    Known Issues: Issue: Workaround: Noise at the end of a file. If meta data is added to a file the WavBox can interpret this as audio data. Remove meta data from file to get around this. Left/right balance is incorrect To correct this raise the volume to maximum (when after firmware update.

Table of Contents