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miniDSP Ltd, Hong Kong / 

www.minidsp.com

 / Features and specifications subject to change without prior notice

 

16 

Before proceeding, set the test signal volume in Audio MIDI Preferences->Audio to be very low. 

Otherwise, you may generate a very loud test signal in the next step and even damage a loudspeaker. 

 
On the multichannel layout diagram, confirm that the speaker channels are as expected. Click on the name of 

each speaker to generate the test signal. (Increase the volume on the Preferences pane if necessary at this 

time.) The dropdown channel selectors underneath each speaker can be used to select the output channel 

number for that speaker if necessary (see screenshot below). 

 
When finished, click 

Apply

 and then 

Done

Summary of Contents for U-DIO8

Page 1: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without prior notice 1 U DIO8 8 CHANNEL HIGH RESOLUTION USB INTERFACE WITH AES EBU DIGITAL I O User Manual ...

Page 2: ...g www minidsp com Features and specifications subject to change without prior notice 2 Revision history Revision Description Date 0 1 First draft 23 Oct 2017 0 2 Second draft 27 Oct 2017 0 3 SRC clarifications 09 Nov 2017 ...

Page 3: ...e you start 9 3 2 Installation 9 3 2 1 Download the latest driver 9 3 2 2 Connect your U DIO8 9 3 2 3 Setup the driver package 10 3 3 Configuration 10 3 3 1 Driver info 10 3 3 2 Buffer settings 11 3 3 3 Firmware upgrade 11 3 3 4 Device configuration 12 3 3 5 Output channel volume control playback 12 3 3 6 Clock source 13 3 3 7 Stream formats 13 4 Installation and Configuration Mac OS X 14 4 1 Inst...

Page 4: ...or incorrect configuration of this product Please read this manual carefully to ensure that you fully understand how to operate and use this product as incorrect use or use beyond the parameters and ways recommended in this manual have the potential to cause damage to your audio system Please also note that many of the questions we receive at the technical support department are already answered i...

Page 5: ...ipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Notice Shi...

Page 6: ...of playback at sample rates up to 192 kHz Inputs and outputs are digital AES EBU x 4 provided on a DB 25 connector Sample rate converters on the AES EBU input stream will be matched to the selected recording sample rate on your PC MAC The U DIO8 is an ideal solution for High resolution multi channel audio Computer based HTPC home theater Surround sound mixing and mastering Computer based active lo...

Page 7: ...5 6 Green In 7 8 Orange Out 1 2 Yellow Out 3 4 Red Out 5 6 Grey Out 7 8 Brown Input sample rate All inputs have a stereo asynchronous sample rate conversion ASRC and accept sample rates from 32 to 216 kHz The sample rate converter will adapt the input sample rate to the selected recording sample rate of your recording software e g ProTools Cubase Each pair of channels can have a different sample r...

Page 8: ...ry Connect the DC plug to the 5 VDC power socket Apply power to the U DIO8 only after all input and output connections have been made The U DIO8 uses little power and can be left powered on all the time 2 2 USB To play audio through the U DIO8 connect the USB port of the U DIO8 to a USB 2 0 port on your computer using the supplied cable The U DIO8 should also be connected for initial driver instal...

Page 9: ...s 8 1 so that you can install unsigned drivers http www top password com blog how to disable driver signature enforcement in windows 10 8 7 3 2 INSTALLATION The U DIO8 is a USB Audio Class 2 0 device For use with Microsoft Windows driver installation is required 3 2 1 Download the latest driver When you receive notification that your order has shipped your installation software download will be av...

Page 10: ...of the U DIO8 then continue with installing the driver Installation will take several minutes Accept the defaults for screens such as install location If you receive a warning that Windows cannot verify the publisher click Install this driver software anyway 3 3 CONFIGURATION To configure the U DIO8 open the USBStreamer Control Panel from Start Menu miniDSP Ltd USBStreamer It has several panes des...

Page 11: ...re high amounts of CPU and memory and may not work on some machines If you do not require lowest latency we recommend that you do not depart from the default safe settings 3 3 3 Firmware upgrade This screen is used to update the U DIO8 when a firmware update becomes available The updated firmware will be made available in the User Downloads section of the miniDSP com website After downloading clic...

Page 12: ... chance of overloading the bandwidth of the controller The current sample rate shown reflects the sample rate of the file being played by the Windows player This setting cannot be changed in the Control panel but simply reflects the current sample rate of the U DIO8 3 3 5 Output channel volume control playback This panel contains a master volume control for all eight output channels and individual...

Page 13: ...ck the 0dB button o To mute all channels click the M button above MASTER o To mute a pair of channels click the M button above the names of the channel pair 3 3 6 Clock source This pane displays the clock source The U DIO8 does not allow the clock source to be changed 3 3 7 Stream formats This pane allows 24 bit or 16 bit data to be selected The output is always set for eight output channels ...

Page 14: ...U DIO8 will automatically be detected by Mac OS X as a compliant multichannel USB audio interface 4 2 CONFIGURATION Open the program Audio MIDI Setup in Applications Utilities The U DIO8 will appear automatically in the list on the left hand side Refer to the numbers on the above screenshot 1 Click on U DIO8 Output to select the U DIO8 for settings changes To set the U DIO8 to be the default audio...

Page 15: ...ayed The sample rate can be set to all common rates from 44 1 to 192 kHz 3 Select 24 bit or 16 bit data The default 24 bit is usually fine 4 To set up the U DIO8 for multichannel audio click on Configure Speakers On the popup pane that appears after clicking on Configure Speakers click on Multichannel and then pop down the selector to choose one of the multichannel formats The display will change ...

Page 16: ... the next step and even damage a loudspeaker On the multichannel layout diagram confirm that the speaker channels are as expected Click on the name of each speaker to generate the test signal Increase the volume on the Preferences pane if necessary at this time The dropdown channel selectors underneath each speaker can be used to select the output channel number for that speaker if necessary see s...

Page 17: ...te 44 1 192kHz Audio resolution Input output resolution 24 bit integer Sample rate 44 1 to 192 kHz 128dB Dynamic Range 125dB THD N Power supply 5 VDC external supply 500 mA requirement 2 1 mm center positive Universal supply provided with plugs for EU UK US AU Dimensions H x W x D 31 x 161 x 108 mm Weight 500 g 5 2 FIRMWARE UPGRADE If a firmware upgrade has been provided to enhance features or fun...

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