M-Audio 2626 Active Software Returns, Input Channel Order, Why are Software Returns disabled?

ProFire 2626 User Guide 21

Active Software Returns

ProFire 2626 allows for a maximum of 26 software returns. The Control Panel software allows you to reduce the number of software returns in order to minimize the demands placed on the FireWire bus and decrease the amount of system resources used by ProFire 2626. Due to slight differences between how the Windows and Macintosh platforms handle audio, this parameter appears differently in the Control Panel and is described separately below for each operating system:

Windows: Software returns can be activated/ deactivated in banks. Check a bank to activate its corresponding software returns or uncheck a box to deactivate the software returns.

Macintosh: The ProFire 2626 Control Panel for Mac OS X has a drop-down menu showing the maximum number of software return channels. This menu allows software return channels to be increased/decreased in pairs.

Why are Software Returns disabled?

Software returns may automatically become disabled when using ProFire 2626 at higher sample rates. Please refer to the “Architecture of ProFire 2626” section of this User Guide to learn more about this.

Windows Users: Software return channels always appear in your audio application even if they have been disabled. However, if your audio application’s outputs are routed to disabled channels, these software outputs will not be played out of the interface’s hardware output ports.

If you have recently changed the sample rate of the interface and some of the outputs cease to play back, open the Router tab in the Control Panel and observe the Output Source Routing section: All disabled software returns will appear grayed-out and italicized. Make sure that your audio application’s outputs are not routed to any of these disabled software returns.

Input Channel Order

This section determines the order of the input ports as they appear in your audio software application. Groups of ports can be dragged and arranged in a left-to-right order (the left-most item appears first in the software’s hardware input list while the right-most item appears at the end).

For example, if you would prefer the coaxial S/PDIF ports to appear as the first entries in your audio application’s list of inputs and outputs, drag the “S/PDIF COAX” icon to the left-most section of the Control Panel.

▶CAUTION: Do not change the input channel ordering while your audio application is open. This may result in unexpected performance from your computer hardware and/or audio software. Once a change is made to this parameter, you may need to “refresh” or “update” your audio application’s input routing page to see the updated ordering. Refer to your audio application’s documentation to learn more about this.

NOTE: Changing the channel order in the ProFire 2626 Control Panel may require you to update the input routing settings within your audio application.