[GordonParticipant]

1- I would require play and record at the same time using the QU-drive.
For example play channels 1-7 , from the qu-drive and record say channels 8 and 9 again on the QU-drive.

NOTE:I only have the QU-24. I’m not sure if everything I say here also applies to the QU-16.

There are two USB plugs on the mixer and they each work differently.

The one on the top surface is called QU-Drive and can only record onto a formatted USB thumb drive or hard drive. It can record 18 tracks (your choice of channels). The software player can playback the 18 tracks which are permanently routed to the first 18 input channels. The player cannot record and playback at the same time, because once armed to record, it automatically arms all 18 channels simultaneously.

The USB on the rear panel is a Type B Streaming port. It is intended for streaming to and from a computer DAW. It can record and playback simultaneously (32 out / 30 in) as long as your DAW supports it. However, the playback channels cannot be patched/ re-routed. They are fixed sequentially. If you playback a stereo file, (such as an mp3) it will automatically bring it in through ST3.

2- I need to be able to sync the qu drive to my sequencer. I understand the QU has no sync facility at all. – Is striping a track old school a possible? (Yes I know I could use a DAW but I really dont like computers.)

I don’t believe QU-Drive supports that. The rear USB B port does support DAW control via MIDI, but I don’t know about a sequencer.

3- I hear the QU drive can record a max of 18 channels at once. May sound daft but thats for the QU16 thats got to be 16 right? 18 for QU24/32?

It can record 16 input channels plus any 2 of the output channels simultaneously. It can record any 18 input channels or combination of input and output channels on the 24 and 32.

4- Can i output groups of channels to desk outputs. Ie select ch 1-8 to all go through output 1&2, 9-12 out of output 3 and so on?

Yes. All of the Mix outputs are like aux sends. Any input channel can be sent to any output channel or combination of multiple output channels.

4A – If the above is possible can i select many channels to same fader? so control many channels from one fader

You can on the 24 and 32, but not the 16. These are called Groups and Matrices. However, the Mix outs do have master faders, if that’s what you mean.

[GordonParticipant]

“You just don’t see whats left out of the display.”

Are you saying that there is content below 20 Hz that is not being filtered out? (Not being snide or smart-ass. Just making intelligent discussion.)

I realize that a well-designed HighPass would make deeper (dB) cuts than an EQ notch and probably remove all content below the slope, but this trick should at least get audible results without spending any money.

The OP wants to reduce level between 20 Hz and 35 Hz. Whether it’s a notch or a shelf, the EQ is still making significant cuts to that area. Is it not? I chose a notch because you can vary the slope.

[GordonParticipant]

“I just want to (4th order) filter the subsonic frequencies below 35Hz from my MIX send feeding my subs.”

You can get pretty close to this with the PEQ on the Mix channel. Simply set the LF band to the following settings…

Q Width = 1/9th Octave (or adjust to taste)
Frequency = 20 Hz
Gain = -15 dB

According to the on screen graph, the roll-off starts somewhere between 30 and 40 Hz and ends deep at 20 Hz. Even the standard HPF doesn’t slope that abruptly.

[GordonParticipant]

The only way to make an EQ adjustment on the vocal (but not guitar) in the monitor mix is to set the monitor sends as “Post EQ” and then adjust the EQ on the vocal channel. However, not desirable because that same vocal EQ is being sent the L/R Master.

Sorry, man.

[GordonParticipant]

I don’t know of a way to make the value change by 0.1dB steps, but you can at least reset the gains back to zero by resetting the channel. While on the processing screen for the channel in question, press and hold RESET and then press the SELECT button for that channel. This resets all of the processing, (i.e., HPF, EQ, Gate, Comp, etc.) to factory default, but for that channel only.

The result is…all EQ gains go back to zero dB.

[GordonParticipant]

“On your effects returns channels, run the monitor mixes Post Fade. Isn’t that what you want?”

Oh!!! I didn’t realize that I could set individual channels as Pre or Post. I thought that it was all or none, as seen in the Routing screen while a Mix is selected. (That’s what I get for running a digital mixer after years of analog training.)

So, if I set my FX Returns as Post in each Monitor Mix, I assume that I also need to run them at Unity to get equal level as the FX in the mains L/R.

Thanks for the eye opener.

[GordonParticipant]

Just to clarify…
If you run your house system in stereo and link two input channels together, you must remember to pan the left one hard left, (causing the right one to automatically pan itself hard right). If you don’t, you will essentially have two linked mono channels that are both panned center.

[GordonParticipant]

Additional questions:
When you solo (PAFL) channel 19, can you hear the click in headphones?
When you pull down channel 12 fader, is the click still present in channel 19?

[GordonParticipant]

Are there any open FX sends or Mix sends originating from channel 12?
Is channel 12 assigned to any group or matrix that is also shared by 19?
Take a look at the global meter screen to seek out any signal/meter that should not be active.

[GordonParticipant]

Oh sorry.

The OP’s remark about “resorting to EQ’ing out high band vocals” let me to believe he was talking about de-essing.

Disregard then.

[GordonParticipant]

Are we talking about de-essing here?

If so, why not use EQ on the original channel? You can set the filter quality as narrow as you want for that. I do it and it is fairly effective.

I’m not even sure how you would make that work with a ducker triggered from an identical channel anyway. I suppose you would need to filter out everything except for the “esses” on the trigger channel. But then, you would have already gone beyond the amount of EQing it would take to just tweak out the “esses” on the original channel in the first place.

Am I missing something?

[GordonParticipant]

Oh cool! I knew that I could rename the regular input channels, but for some reason, I hadn’t noticed that I could also rename the Mix Channels. Thanks. That was easy.

[GordonParticipant]

I just got the Pro version for QU-24 and like it. Is there any way to rename the Monitor Mix Channels? Example, Mix 1 = Drummer’s monitor, Mix 2 = Joe’s monitor, etc…

That way, I wouldn’t have to constantly memorize which number mix belongs to whom. (I run for different bands and it changes frequently.) Thanks.

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