Audio Box - $369.99

The COBRA Audio Box is a stand-alone wireless audio output device for playing music in perfect sync with your 18R2 and firing modules. Simply plug the Audio Box into your sound system and start your script on the 18R2.

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In addition to providing audio synchronization, the Audio Box is fully wireless, with the same range as the COBRA firing modules (1,500+ ft. line-of-sight). This allows the shooter to be in the best position for firing the show, and the Audio Box to be in the best position for playing the audio. In addition, the Audio Box uses a lite digital signal to control the audio. Compared to beefy time code feeds that can be unreliable and require a constant transmission, the lite signal is very resilient to low signal environments as the Audio Box will continue operation even if signal is lost.

You can also use the Audio Box to add wireless COBRA firing modules to existing systems (i.e PyroDigital, FireOne, Pyromate, etc...) that accept a SMPTE, FSK, or other time code feed.  Simply plug the output of the Audio Box to the 3rd party firing system, start your 18R2, and the COBRA firing modules fire together with the firing modules of the 3rd party firing system controlled by the Audio Box output time code signal.

You can control multiple Audio Boxes using a single 18R2 remote. Each Audio Box can play the same, or different MP3 audio files allowing for a lot of flexibility and creativity with your audio design.

To use, simply perform the following steps:

  1. Save an MP3 audio file to a included 8GB USB thumb drive and insert into the Audio Box
  2. Connect your Audio Box to a sound system using a variety of line out options including headphone, RCA, or 1/4" or XLR (available as an add on accessory)
  3. Press the AUDIO TEST button on the Audio Box to perform a sound check. Use left and right volume controls to adjust volume.
  4. Start your show using the 18R2. The audio plays in perfect sync!
  5. When playing, use the following features to ensure control over your audio and timing.

    1. Use + and - on your 18R2 to align your script forward and backwards with 1/10th of a second adjustments. You can adjust 10 seconds in either direction.
    2. By pausing the show (pressing ARM on remote), the audio pauses along with the script.
    3. Resuming the show, resumes the audio at the correct spot.
    4. If the Audio Box is powered off and on mid-show, the audio automatically aligns to the script.
Physical Construction
Dimensions  8.7" x 7.5" x 3.9" (22.09cm x 19.05cm x 9.906cm)
Enclosure Material Polypropylene
Power 3 x AA (2.5 hours active operation)
Antenna +5 dBm 8.5" Unidirectional Rubber Duck Antenna
Radio Compliance FCC CE, IC certified (ID: U90-SM220)
Frequency 2.4 GHz Spread Spectrum
Range 500m (1,650 ft) direct line of sight range w/ built-in link quality detection
Range with MESH Technology (5.0.0 or higher firmware) +450m (1,500 ft) per device (up to a total of 10 hops per device)
Encryption IEEE Mac Address / Encrypted Data
Optional Accessories
Audio Box XLR Kit

Audio Box User Guide

A detailed user guide for the COBRA Audio Box

  • What is the Audio Box
  • How to use the Audio Box
  • Troubleshooting
  • Preparing your Audio File

COBRA Error Code Reference Sheet

A listing of all error codes and script error codes and suggested resolution.

Audio Box Demonstration Video

An instructional demonstration of the COBRA Audio Box.

COBRA Audio Box: MP3 Format

A video demonstration on how to format your MP3 Audio File for the COBRA Audio Box. Presented by Tim from Fireworks Show.

Firmware Version:
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