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    @mike C

    Apologies for not noting SPL as the units. Consider this an answer to both your posts.

    I thought the context was clear, but apparently not.

    The high SPL levels need compressing/limiting to keep them from being too loud.

    The low SPL levels need UPwards compression so that the speakers can be understood.

    Music directors and audio honchos everywhere claim they get people who say it is too loud and some who say it is too soft.
    What they dont grok is that the music *is* too loud on the high (SPL) end, and the voices are too low on the low (SPL) end of the amplitudes (SPL) of the show.

    Proper compression both down at the top (SPL) end, and UPwards compression at the low (SPL) end would solve the problems that many churches have. Your simple fix only handles part of the problem.

    See pictures of many compression types here:
    Upward compression increases the loudness of sounds below a certain threshold while leaving louder sounds unaffected. Both downward and upward compression reduce the dynamic range of an audio signal. Parallel compression is just one way to achieve UPwards compression.

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    @Dick Rees

    Easier said than done. Some guest speakers have their own style no matter what.
    Others are not receptive to being told how to do things, or they forget.

    Changing someones speaking style is not as easy as you make it out to be.

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    @Dick Rees
    This *IS* about Qu mixers!!!!!!!!!!!!!!!!!

    I KNOW the basics of sound reinforcement.
    What I do not know is how to make the Qu do what needs to be done.

    Does it have upward compression or not?
    Would the Qu’s AMM help solve the problem? Insufficient info in documentation to be sure what it can really do.

    These are Qu issues for us.

    And FYI A limiter compresses the high end.

    We need UPwards compression on the low end of sound levels.

    The high end is not a problem if the Qu lets us do both the low end as well as compress/limit the high SPL levels.
    It is unclear whether their compressor can be set differently for the two different uses.

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    @alex A&H

    Thanks. I had found some info in that article just after posting.

    But, still, why won’t the Qu even recognise the flash drives we use?
    We are going to try USB 2 next having failed with our 3.0 and 3.1 versions.

    That document also said our memory is under the maximum that is okay and a little over the minimum should we ever record max tracks with it someday. The dealer said to use a smaller memory. Granted you all are not responsible for independent dealers and their knowledge/skills. But our music director relies on them for everything.

    The documentation is very good for being written by engineers.
    Unfortunately it falls short of what would truly be good for users.

    I repeat my request that A&H provide guaranteed memory sticks via their dealers. Problem solved! And users happy too.

    We , our group, do not care about recording or playing back. At least not currently, maybe never.
    We just want to back up our scenes and other settings.

    There are way too many posts here that show the USB is a real problem area.

    A&H should either fix the problem(s) or come out and say they changed something for some reason like , maybe , trying to be able to record more channels at once than the standard would have permitted.

    Is it proper to claim to use USB when the standard specifications by the USB IF are not working right?

    You all have an aamazing device but getting it to work right for us is frustrating at times.

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    at least your computer knows you have the memory stick.

    our Qu wont recognize a memory stick that we have tried.

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    Summer 2019 and I am having the same issues that @barry noted in 2017.

    There is one thing if the file format is wrong. But the mixer does not see the drive to format it and when we format it the way the dealer said on our PC the Qu still does not see it.

    Speed is something else. If a specific device is too slow then I accept that as my problem.
    But I won’t know if I can’t format it and use it.

    USB standard is also something else. Do I need USB3.0 ? USB 3.1 ?? The 2019 USB 4.0 ??? Something else ?
    There are no specs in the docs or knowledgebase telling us what to use, just pointers to a user database of stuff that should work.

    USB is supposed to be a standard the USB IF sets and apparently does not enforce to protect users.
    << Universal Serial Bus (USB) is an industry standard that establishes specifications for cables and connectors and protocols for connection, communication and power supply between computers, peripheral devices and other computers. Released in 1996, the USB standard is currently maintained by the USB Implementers Forum (USB IF). >>

    @barry said:
    Yes. It is beyond a joke.

    I’m a software developer, Ive worked on embedded systems with USB in the linux kernel in C. The QU series USB is an absolute joke.
    I have not seen this level of USB incompatibility since the earliest days of USB – its pathetic. To be honest I am now feeling so aggrieved by this I am wondering if there is possible recourse to trading standards here – as this area of the product has not delivered what is promised. I have wasted numerous amounts of money on USB sticks – the “list” is ridiculously short.

    To NOT see a USB device – unforgivable. There is not a single USB device that my laptop from 2004 doesnt see. Yet the A&H QU-SB baulks and refuses to format them.

    My Linux machines will see, format and use as a filesystem (name what you will ext2/3/4, rtfs, ntfs, fat32 etc) the QU hardware isnt old enough to not be compatible!!
    By my reckoning I understand that A&H can advise that certain specs of USB stick will not perform at the required level of writes, (supposedly…). However there should not be a single USB stick that cannot be seen, formatted and have at least full functionality without streaming writes. i.e. all the scene transfers etc should work as a minimum.

    So whilst I am a huge A&H fan….basically I shall write formally to A&H using snail mail to complain and seek resolution to fix my duff hardware/software. Failure to resolve the matter will result in me seeking help from trading standards. I shall also examine all the literature to see if a case may be made regarding the marketing literature via the Advertising Standards Agency.

    So A&H. After a year of using a QU-SB I’m at a junction whereby you can take this opportunity to fix the matter and resolve – or I shall feel no other action is possible than to press for resolution using other means – in short you are peeing off a LOT of loyal customers….is this really the way you wish to behave? Does such behaviour make good financial sense? You see when I need a bigger rig – do I buy dLive or do I walk because of this experience and examine the exceedingly good desks available from others?

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    @alex A&H

    Thanks for replying to the question.
    Are you saying we can use usb 2.0 and do not have to only use usb 3? Those are easier and cheaper to come by.

    We tried two 3.0 memory sticks on the top front of the board. That is the Qu Drive port as I understand this box.
    Also that is the type A large flat connector that all memory sticks use.
    The board never realises they are there so we could format them.

    One showed nothing. The other one acted as above. We were told to format the memory stick on a pc and try again.
    Formatted but not retried yet.

    The music director initially tried the memory stick that I provided.
    All work with no problem on multiple current PCs (except my win98se) — xp 7 8 10.
    AFAIK some light comes on the Qu (maybe it blinks or spins?) but nothing else happens.

    I will attempt to have this retried this week while I am watching so I can give you better info.
    I bought a third usb memory that is a spinning HD to see if that would work. But not tried it yet.

    We just need to back up the initial settings so we can start adjusting the device to tweak some feedback problems without losing what we had set up by the dealer.

    So far we do not use the other usb ports.

    AFAIK if you use usb , you are supposed to conform with the standard or else not say it is usb.
    The USB IF has a compliance program but perhaps they do not enforce their standard to avoid needless problems.

    It would be nice if the dealers would provide the memory sticks that are guaranteed to work to avoid the hassles andor the searching for special ones that worked on other folks systems.

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    But it still should not be necessary to hunt down specific usb memory sticks.

    You should be able to use any usb 3.0 or 3.1 memory stick no matter who made it.

    Don’t know what empty suit made a bad decision or if the engineers really goofed but this sure seems like an erroneous design.
    And AH should fix it unless they are phasing out the Qu32 and getting ready to replace it.

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    I looked at the block diagrams and wondered if it were not possible to create feedback loops.
    Apparently it really is possible to do that.

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    I suppose that we could special order some very specific memory stick that is on the apparently okay list, but there should not be a need to do that at all. I should be able to go to any local store any buy any usb memory stick and expect it to work (if its usb3). And I would hope that even a usb 2 version would back up our shows scenes and libraries okay.

    As it is the Qu32 does not recognize any memory that we have tried yet.

    ANY usb memory that is 3.0 or 3.1 should work , PERIOD. At least the device should be recognised and let us format it.
    We do not need to record just back up the settings.

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    sorry. I saw 3 Qu control aps on the AH website.
    I did not see any scenes for the other aps.

    This is the claim for your Qu-control at the AH link for qucontrol
    https://www.allen-heath. com/ahproducts/qu-control/


    List of parameters assignable to Qu-Control:
    Input Faders
    LR On/Off buttons
    LR On/Off Radio buttons
    Master Faders
    Input Mutes
    Master Mutes
    Mute Groups
    Send Levels
    Send On/Off buttons
    Send On/Off Radio buttons
    Group Send Levels
    Group On/Off buttons
    Group On/Off Radio buttons
    Matrix Send Levels
    Matrix Send On/Off buttons
    Matrix Send On/Off Radio buttons

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    looks like it says so to me

    could not cut and paste image
    but here is a cut and paste of the text on that link

    Version 1.9 now provides full control including mixing and setup functions.
    Live mixing and setup functions available include:
    Fader levels, mutes, pans, PAFL
    Mix/FX sends, channel assign, Pre/Post routing
    Local/Remote Preamp/USB source selection
    Preamp Gain, Pad, Polarity, 48V and linking.
    Ducker/insert select
    HPF, Gate, PEQ, GEQ, Comp, Delay
    Custom Channel Naming
    Custom strips for personalised channel layout
    Full FX parameters, including Tap Tempo
    Mute Groups and DCAs
    Talkback, SigGen assign
    Network and MIDI control
    USB data and device management
    Full metering including Mute/PAFL status and RTA
    User Permissions and Passwords
    Qu-Drive USB record/playback control

    [B] Scene and recall filter/safes management <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<————————————-[/B]

    Total Local/Remote/Monitor and USB I/O patching
    Remote Shutdown

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    Anyone using a QU mixer in a multipurpose room scenario? I was planning to use the QU-Control app and set it up to facilitate one-touch audio setup for the room based on a set of predefined setups built as scenes.

    The QU-Control app page on the AH website boasts the ability to do scene recall, but when I went to setup the app, scene recall was not one of the options. Anyone have any insight? I hope they were not referring to the use of soft keys, as the QU-16 only has 4.

    I find 3 aps at
    Which one are you using?

    Our music director uses the Ipad version. Just got it but he indicated he could access the main QU32 and operate it from the IPad. That would seem as if he could recall scenes that way.

    And down a ways on this page:
    it says you can do scenes.

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    Unless there is some hidden feature to do it then I think you will need something like this:×386.gif
    which is not that hard to build.

    or you could get the Radial mix 2-1 device:
    I suspect other people sell similar ones too.

    Do not use a reverse Y connector to try to directly join the outputs.

    If all you want is mono out then just hard pan, all original external inputs, to L and use the L output.
    Or do them all with R; your choice which side to get the mono from.

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    True, but I thought he was only going to turn one on at a time.

    There would be maybe 6 dB signal loss due to the Z of the other input if both were plugged in at the same time.
    I doubt that he would damage a keyboard with both plugged in.

    Still, I would not recommend doing it.
    So far 3-0 votes against the idea of plugging both in.

Viewing 15 posts - 1,651 through 1,665 (of 1,688 total)