QU-Pac multitrack recording-first two tracks not recording

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This topic contains 13 replies, has 7 voices, and was last updated by Profile photo of rejd rejd 3 years, 9 months ago.

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  • #63535
    Profile photo of Mbirame
    Mbirame
    Participant

    Hi guys,
    We are supposed to be able to record 18 tracks on the thumb drive right? I am using an approved sandisk and I have 0 errors. However the first two tracks only record 33KB and end. Tracks 3-18 are recording nonstop (one hour +). Any thoughts on what could be the problem?

    #63545
    Profile photo of BBEgo
    BBEgo
    Participant

    Looks like you’re arming it, but not actually starting the recording.

    You must hit play after pressing the record button.

    #63547
    Profile photo of Mbirame
    Mbirame
    Participant

    This is a multitrack, so there is not individual track arming (right??). Tracks 3-18 are recording fine.

    #63550
    Profile photo of Dave
    Dave
    Participant

    There is a routing screen for qu-drive where you can select what you want to record on those tracks. By default 1-16 would be on inputs 1-16, its possible that the selections for 1 and 2 were changed to a mix or something else.

    #63551
    Profile photo of Mbirame
    Mbirame
    Participant

    There is a routing screen for qu-drive where you can select what you want to record on those tracks. By default 1-16 would be on inputs 1-16, its possible that the selections for 1 and 2 were changed to a mix or something else.

    Yes-but no matter what the routing, the channels still records a blank track-even if they are set to “X”. In my case, two of the 16 channels are simply not recording. In fact I have discovered that the two channels that don’t record is random. I checked a session from last week of the same show and in that case it didn’t record track 1 and 3.

    #63552
    Profile photo of Giga
    Giga
    Participant

    Happened to me once too where 1 random channel wasn’t recorded for no aparent reason. Never resolved even after consulting A&H technical support.

    Giga

    #63593
    Profile photo of [XAP]Bob
    [XAP]Bob
    Participant

    Have you tried the file recovery steps outlined for complete failures?

    #66663
    Profile photo of rejd
    rejd
    Participant

    I get this problem too (QU-PAC). Always different channels which don’t record even though the scene is the same on the unit. Saturday night Tracks 1, 4 and 10 are silent whereas the previous week everything recorded fine.

    #66668
    Profile photo of garyh
    garyh
    Participant

    Possible buffering problem? Maybe reformat? Have you tried a different stick or portable hard drive?

    #66694
    Profile photo of rejd
    rejd
    Participant

    Thanks garyh.

    Did a bit of experimenting in the studio today, reformatting the drive and also getting away from the ridiculous SPLs of a live situation. As is always the way, I couldn’t reproduce the error with our usual disc (a 2TB Lacie rugged USB3). Perhaps vibration from the low frequencies could be the problem? Has anyone had this same thought? And if so, has anyone had any success trying to isolate the disc from vibrations? The hifi community seem to use a ‘sandbox’ to isolate turntables from acoustic vibrations so maybe that would work…

    I also tried a spare USB ‘stick’ (a SanDisk) but I got a lot of errors while recording and a lot of stutters on playback. Similar situation with a Kingston one. Does anyone have a recommendation for a suitable USB stick or SSD? If I’m going to have to reformat for each event then 64 GB would seem to be ample ā€“ that would give nearly seven hours of multi-track recording.

    Documentation seems to suggest that you should reformat your drive before each session. Again, be good to know if anyone has solved this problem (or any other) by reformatting each time.

    Finally, I should also add that my initial description of the problem was not quite accurate. It’s not that the audio files created are silent, rather that they seem to be corrupted. So, all 18 files in the multitrack folder are the same size (say, 1.6 GB for example), but some of them won’t open (either in Mac OSX or iTunes).

    #66696
    Profile photo of [XAP]Bob
    [XAP]Bob
    Participant

    How are you stopping the recording?

    #66698
    Profile photo of rejd
    rejd
    Participant

    Hi Bob, I hit stop and then wait while the QU-PAC clears its throat. As per the A&H advice (I think) we tend to just leave the recording running for the whole show, breaks and all. So, the post-stop processing does quite often take a long (so much so that I have wondered in the past if the unit has frozen up).

    There have also been occasions when the plug has been pulled before I’ve had a chance to go through the proper shut down routine (or where I’ve forgotten to go through the shut down routine before pulling the plug myself if I’m being completely honest).

    I’ve not noticed a link between any file problems and not following the shut down routine ā€“ but until you mentioned it, I’d not been looking for it. Could that account for it d’you think?

    #66702
    Profile photo of [XAP]Bob
    [XAP]Bob
    Participant

    Normally Iā€™d expect them all to be toast, but it sound similar in symptom…

    #66705
    Profile photo of rejd
    rejd
    Participant

    Thanks Bob. Solution would seem to be a solid state of some sort. Does anyone have any recommendations for a USB stick or SSD drive that works well?

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