Routing Audio from Qu to a DAW and Qu-Drive
The USB sends (the signal sent from the Qu for recording) don’t need to be enabled for signal to reach Qu-Drive or the USB B interface. The USB Sends are always routing signal to both Qu-Drive and USB B and assignments for the USB Sends can be configured in the Setup > IO Patch > USB Audio page on the Qu surface, or IO Patch > USB Audio in the Qu-Pad app.
Assignments are already configured in the factory/default settings to accommodate the most common configuration. For example, the Main LR mix is routed to the Qu-Drive stereo recording USB Sends (17 & 18) in the default setup.
If you are recording to a DAW and you want the USB patching to be 1 to 1, for example; input channel 17 to DAW Channel 17, input channel 18 to DAW Channel 18 etc then you can use the USB Audio page to freely configure what is sent to the USB Sends.
To change an assignment, press on a USB Send so that it highlights in yellow. Then use the screen rotary encoder to change the assignment. You can also use the Fn (+1) key to assign the next USB Send to the next incremental channel. Press apply to confirm the changes.
The input channel source for the USB Sends can be configured to use either the Insert Sends or the Input Direct Outputs.
Insert sends = Post Preamp signal. No channel processing is included in the signal.
Direct Outs = Configurable source points from the input channel processing. Follow Fader and Follow Mutes options. A per channel Trim is available to attenuate or boost the signal routed to the Direct Output. The Direct Output settings can be accessed by pressing the Sel key for an input channel, followed by the Routing key.
Routing Audio from a DAW or Qu-Drive to Qu
Unlike the USB Sends, the USB Returns (the signal played back to the Qu) cannot be changed in terms of routing. The USB Returns are routed to the Qu input channels when the channel is sourced from USB. You must choose where the USB Return is sourced from (called the Global USB Source) as it’s not possible to return signal from both Qu-Drive and the USB B Interface at the same time.
To change the input channel source, the Input Source menu can be found by pressing the Sel key for an input channel, then press the Processing key, followed by the Fn (Source) key on a Qu surface. In the Qu-Pad app, select a channel and press on the current Source selection in the Input Source block.
In the screenshot above, you can see that currently all mono and stereo input channels have their input source assigned to Local, this means that Qu is expecting to receive audio from the analogue inputs. Any audio routed to USB from the DAW will be ignored. The Global USB Source is also set to Qu-Drive.
In the screenshot above you can see that I have allocated ST1 to source its input from USB and the Global USB Source is set to USB B Streaming. This means I can route the output from a DAW to outputs 17 & 18 and the signal will be received on ST1 on a Qu-16 or channels 17 & 18 on any other Qu.
On a Qu-24, the ST channels can be sourced from USB B by selecting output 25-30 in a DAW.
On a Qu-32, Qu-SB or Qu-Pac, all 32 USB Returns are routed to the 32 mono input channels, so the ST channels are not used for USB Returns when using the USB B interface.