T1 ToneMatch® Audio Engine / USB / Output Stereo to Two F1 Systems

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If you need to playback stereo tracks from a USB from your computer, this how you can do it.

NOTE: You will want to control the volume and balance from your computer. It is not convenient to do this from the T1 ToneMatch Audio Engine in this configuration because one of the channels is routed through the T1 ToneMatch Audio Engine Aux buss and the other is through the Master. It is not easy to control both of these at the same time on the T1 ToneMatch Audio Engine.

Equipment Required

Initial Connections

Turn down the outputs and volume

Start with your computer with the volume set all the way off, muted or at least really low. Things can get loud very quickly if you are not careful.

On the T1® turn down the Master Volume and mute all Channels.

Physical Connections

Make the following connections.

T1 Stereo to F1 Model 812s.jpg


We want to split the USB signal from the computer so that

  • the Stereo Left channel goes through Channel 4/5 to Aux and from there to an analog connection to an L1®
  • the Stereo Right channel goes through to Master and from there to an analog connection or digital connection to another L1™


  • Turn the main selector to Prefs.
  • Select USB from PC


  • Set Left: Ch 4/5
  • Set Right: Master


Channel 4/5

  • Press Chan 4/5 CH Edit
  • Rotate the selector to Aux
  • Set the Level to 0% (not bypass)
  • Set the Tap to Pre
  • Mute this Channel. You can turn down the level as well. It you leave the Mute off then you will be sending both Left and Right stereo signals to the Main output.


Setting the Relative Levels

  • On the Computer: Start playing a track. Turn up the volume on the computer a little. You won't hear anything yet.
  • On the T1® Turn up the Master Volume. You should be hearing the Stereo Right channel.

Work the volume on the computer and the T1® until you are happy with a workable volume level.

  • On the T1® Turn up the Aux Level. Your setting will look something like this. The actual value you set may be different. That's okay.


This is the Stereo Left channel. Bring up the volume until it matches the output from the Master. Note: This Aux volume is completely independent of the Master volume. This is why you want to set it to be equally balanced with the Master. You will then be able to control the balance and level from the computer.

Download Shared Scene

Here is a Shared Scene you can load into your T1 ToneMatch Audio Engine. If you have been following along and have set up our T1 ToneMatch® Audio Engine with the settings above, you do not need to download this Shared Scene. I just included this as a convenience in case you wanted to try the Shared Scene system.

This scene has very generic settings for Channels 1,2 and 3 and the settings discussed in this article for Channel 4/5.

  • Channels 1,2,3 are set to Vocal Microphones: Handheld Microphones - no effects, muted.
  • Channel 4/5 is set as described above with USB routed to 4/5 routed to Aux. This is muted so that this Channel is not sent to the Main output.

Please read the entire article before using this Shared Scene. It is provided as a convenience to save you some time is you want to have the same settings.


This is an experimental file and I strongly recommend that you back up all your scenes before loading this one, just in case you overwrite something by accident. I have tested this and it works in my environment, but I cannot accept responsibility for any issues you may have when you apply it to your T1 ToneMatch® Audio Engine

You will need to understand how to use the L1 Software Updater program to load this Shared Scene.

Things you must have and understand to use a Shared Scene

Get the L1® Updater Software

These are the latest versions of the ToneMatch Updater application.

ToneMatch® Updater Software application. (two versions available)

If you have questions please see ToneMatch Updater discussion.

To update your L1 Model II with a T1 ToneMatch Audio Engine use the older version of the L1 Updater software

macOS Issues

[Filename] can't be opened because the identity of the developer cannot be confirmed

If you see "[Filename] can't be opened because the identity of the developer cannot be confirmed" message displayed

Mac OSX users may see this message when trying to install a Bose app. If this message appears, try the following:

Mac users may need to hold the Control key (Ctrl) when opening the file.

Various versions of the Mac OS cannot identify Bose as a developer. The Mountain Lion version of OS X (10.8) includes a feature called Gatekeeper to protect users from installing applications of non-Apple identified developers. The Mavericks version of OS X (10.9.5) temporarily cannot identify Bose as a developer as well.

To open the application, follow these steps:

  • Press and hold the Control key while clicking on the application icon
    • Note: Do not use Launchpad to do this. Launchpad doesn’t allow you to access the shortcut menu

In the menu that appears, select Open at the top of the list

A confirmation window will appear. Select Open

Without Control click:

SoundTouch-osx-installer 01.png

With Control click:

SoundTouch-osx-installer 02.png

More information on Gatekeeper can be found at http://support.apple.com/kb/HT5290


If your firmware update is not successful - Caution

After you update the T1 ToneMatch Audio Engine or L1 Model II firmware, if you see a window on the PC that says the update was not successful, you should:

  1. turn the L1 and T1 off
  2. wait three seconds
  3. then turn the L1 and T1 back on

Do this before trying the update again!

This allows the L1 and T1s to re-establish a good copy of the software.

Source: If your firmware update is not successful - Caution

Shared Scene Download

Here is a very simple Scene that includes the setup described above.