…..and with using a stage box you have more assignable outputs.
Depends on how you want to run them.
What are your main speakers?
To run them as “AUX SUBS” use one of aux outs to run the subs, set that aux to post fade.
On the GL2400’s the mono output can be set to AUX 6 to feed sub woofers and the main level control on the mono fader.
Actually those are not digital but ole fashion analog just using the conductors of the CAT cable.
Not a big fan of those when used as a stage snake on a busy stage.
Just to ask are you using a known good cable and monitor speaker ect. that worked when plugged into AUX 1 & 2?
The only routing for AUX 3 & 4 if for the USB output.
For a test maybe try connection a computer to the USB and see if you can get audio for AUX 3 & 4 out of the USB jack.
Do you have sound at the headphone jack?
The DAW playback tracks/channels will line up with the inputs on the mixer, you need the mixer set to receive the USB input on the channels, USB button next to the trim knob.
It sounds like you installed it but if not you need to download and install the QU driver on the computer.
We are using latest firmware & app versions, no AMM, auto-gains not involved, no comp/limiters, min. reverb/effects, and our outputs (1-6) are set to post-PEQ, etc.
Post PEQ is not the same as PRE or POST fader.
For monitors you generally want the mix/aux sends set to PRE FADER so any changes made to the main mix do not cause changes to the monitor mix.
Is there anything connected to the USB B connection on the SQ? Though you did say it works fine with the mix app closed.
Generally it’s best to have the mixer on a dedicated network.
Using aux outs would work or assign the channels to subgroups as needed and send the sub group outputs to the needed locations. Un-assign those channels from any other mixes.
Build up scenes with various routing configurations.
Are you connecting with 2.4 or 5g WIFI. If not 5g try a 5g channel.
Get a scanner app and see what channels are in use. I tend to stay in the lower
5g channel. I use WIFI Man, the scanner apps are just about all for Android.
Are there any other apps open on your ipad?
Also try hiding the SSID broadcast.
Was this with a know working USB stick used in the past?
So if I understood the the post correctly your pick up direct output the built in mic output were at one time isolated with each output on it’s own mixer channel input?
Does your harp have two individual outputs are does it use a tip ring sleeve stereo cable
that breaks out into two output connectors?
Are you recording just a stereo board mix or multitrack?
No mixer control app that I know of will directly play the files.
You are at the max length. Is the cable one continuous piece?
Is it shielded cat cable?
If you do not want changes to the channel strip eq to be sent to the mix out there is setting on the mix routing menu for PRE or POST EQ that is independent of the PRE POST fader setting.