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Thread: UFX1604: 24 bit / 96 kHz recording via USB host?

  1. #1

    UFX1604: 24 bit / 96 kHz recording via USB host?

    I recently purchased the UFX1604 and so far I'm quite pleased, but recording via a connected USB drive is limited to 16 bit 44.1 kHz or 48 kHz. Are there any plans to support up to 24 bit 96 kHz?

    A separate point of clarification - with the black FW 1-2 source button pushed, the USB audio (1/2) is routed to the main output. With the main fader at unity, 0 dBFS (e.g. signal from connected PC) appears to equate to about +20 (dBu?) on the meter - i.e. not quite illuminating the clipping LED with the fader at unity (and similarly, with only the red FW 1-2 button pushed in, albeit the main fader is bypassed). Is this correct? I.e. the metering basically follows the rule 0 dBFS equates to about +20 dBu in the analogue domain?

    It only occurred to me to ask because I nearly blasted my ears off listening via headphones with the red FW1-2 button engaged, compared with my mix, which I generally set to peak below 0 dBu.

  2. #2
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    Hi John,

    Welcome to the forum. Where are you getting the limitation of 16 bit 48Khz? According to the UFX1604 product page, it is suppose to support 24 bit, 96Khz.

    Paul

  3. #3
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    Paul, that's for the USB interface. The stick supports 44.1 kHz/48 kHz only.
    Step 7 of the quickstart guide also states that the console tests the writing speed of the USB stick; it will do 24bit recording only if the stick is fast enough to support it.

    http://www.behringer.com/assets/UFX1...AB3_QSG_WW.pdf

    That same guide states that the phones have +22 dBu max. output level.
    Think of this board as a Swiss Army Mixer. --Glenn Adams

  4. #4
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    Thanks Michael. I forgot it had a port for a standalone USB drive, which would probably be similar to the X32 top/front USB port (and equivalent discussion).

    Paul

  5. #5
    Quote Originally Posted by Michael Mendelsohn View Post
    Paul, that's for the USB interface. The stick supports 44.1 kHz/48 kHz only.
    Step 7 of the quickstart guide also states that the console tests the writing speed of the USB stick; it will do 24bit recording only if the stick is fast enough to support it.

    http://www.behringer.com/assets/UFX1...AB3_QSG_WW.pdf

    That same guide states that the phones have +22 dBu max. output level.
    Thanks Michael - must have missed that bit 24 bit would be good for the extra headroom, but guess I need a powered HDD. It's slightly unfortunate about restricted Fs on a hosted device. There is a fair bit of aliasing on the UFX converters at 44.1 and 48 kHz. Recording at 88.1 or 96 kHz and down-sampling later in the digital domain with a decent SRC algorithm improves performance quite a bit.

    The question on level wasn't so much about max output, but understanding the equivalent expected output (metered) when playing 0 dBFS via the USB return channels (and main fader at unity or bypassed).

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