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Backtrack™ Using & Applications

This page describes the setup and operation of the Backtrack stereo switcher with everything you need to know to get up and running. For further details, please click on the icon to the left to download the user guide.

Making Connections

Before connecting to the Backtrack ensure that your audio system is turned down to prevent plug-in transients from damaging sensitive components such as tweeters. The Backtrack is powered via a 15VDC center-pin positive supply (included). There is no on/off power switch; the Backtrack will simply spring to life as soon as power is connected and the LEDs for the A inputs will illuminate.

Connecting your playback sources

You can connect your playback devices to the Backtrack using ¼" or 3.5mm TRS connectors. The ¼" connectors allow you to connect to the output of a recording interface, while the 3.5mm jacks make it easy to connect to a smartphone, laptop or tablet. When a cable is connected to the ¼" TRS inputs, the corresponding 3.5mm jacks on the front of the Backtrack will be disabled. However, you can mix and match the input type used – for example, connecting a laptop with a recording interface to the left and right ¼" A inputs, with a smartphone connected to the 3.5mm B input.

Connecting the outputs

The Backtrack has two stereo outputs, the main XLR outs and the Monitor ¼" TRS outputs. We recommend using the XLR outputs to feed a pair of line inputs on the PA system, as they feature transformer isolation to help eliminate the possibility of encountering buzz or hum from ground loops. A ground lift is also provided on the XLR outputs to further reduce noise should you encounter a ground loop. The ¼" TRS monitor outputs allow you to feed a set of powered speakers on stage to listen locally to the Backtrack outputs.

The headphone section

The Backtrack features a headphone output to allow you to test your primary and backup playback systems. This is equipped with a level control and CUE SELECT switch which will choose whether the headphones monitor input A or B. Note that this switch will not affect the main or monitor outputs of the Backtrack, so you can use the headphones to ensure both sets of backing tracks are playing back at the same time and volume.

Using the JR-2 remote

The optional Radial JR-2 is a compact footswitch that is equipped with two footswitches with accompanying LED indicators. When connected to the Backtrack, it allows you to remotely control the mute and A/B input select functions – so switching can occur seamlessly on stage. Use a ¼" TRS cable to connect the remote to the JR-2 input on the Backtrack, which will provide it power for the LEDs. When the JR-2 is connected, the INPUT SELECT and MUTE switches on the Backtrack itself will no longer function; these features will only be controlled by the footswitches.

Linking multiple units

Should you have more than two channels of backing tracks in your performance, you can link together multiple Backtracks and have them work in tandem. If you have 8 or more tracks you might consider using the Radial SW8, which is better suited to larger playback systems. To link two or more Backtracks together, simply take a ¼" TRS cable and connect the LINK OUT on the master unit to the JR-2 INPUT on the second Backtrack. Repeat this process for any subsequent Backtracks that you wish to link up. The master Backtrack will control the INPUT, SELECT and MUTE functions for all of the linked units, but the headphone section on each unit will remain independent to allow for testing of each input.