Apogee Symphony 64 User Manual page 52

Symphony64 PCI card – User's Guide
Maestro Mixer Window
Each Symphony 64 PCIe card includes 2 independent mixers, Mixer A and Mixer B. This allows two completely
independent low latency mixes to be routed to different hardware outputs, as depicted in the diagram at right.
Additional hardware interfaces connected to the Symphony 64 card provide additional inputs to each Maestro
mixer. These inputs are distributed across multiple mixer panes, accessed with the Interface drop down menu.
Keep in mind that each mixer only has one From Software and To Hardware channel, which don't change
when a new Interface drop down menu selection is made.
When multiple Symphony 64 cards are installed, the mixers on each card remain independent. Thus, with two
PCIe cards installed, four mixers are available:
Card 1 Mixer A
Card 1 Mixer B
Card 2 Mixer A
Card 2 Mixer B
Card 1's mixers can access only the hardware inputs and outputs connected to Card 1, and Card 2's mixers can
access only the hardware inputs and outputs connected to Card 2. It's not possible to mix hardware inputs
connected to Card 1 to hardware outputs connected to Card 2 (and vice versa).
Working with the Maestro Mixer and your software application
When monitoring through the Maestro mixer, it's necessary to configure your software application to mute output
when Record is engaged, so that the performer only hears himself via the low latency signal path while recording.
In Logic this is accomplished quite simply by choosing Logic Pro > Preferences > Audio, selecting the Devices
tab, then the Core Audio tab, and unchecking the Software Monitoring box, as shown in the Logic window at
right.
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