VIRGIL OB DANTETM NETWORK AUDIO HEADPHONE AMPLIFIER PRODUCT DETAILS 6 BROOKS PLACE, MAIDSTONE, KENT, ME14 1HE. ENGLAND. Visit our Website at www.glensound.
Glensound Electronics Ltd Thank you for choosing a new Glensound product. All rights reserved. Information contained in this manual is subject to change without notice, if in doubt please contact us for the latest product information. If you need any help with the product then we can be contacted at: Glensound Electronics Ltd 1 – 6 Brooks Place Maidstone Kent ME14 1HE United Kingdom Telephone: +44 (0) 1622 753662 Fax: +44 (0) 1622 762330 EMAIL ADDRESSES General enquires: office@glensound.co.
IMPORTANT SAFETY INSTRUCTIONS This symbol is intended to warn that dangerous voltages within the product are present and constitute a risk of electric shock. 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) 15) This symbol is intended to highlight that there are important operating & maintenance instructions in the literature accompanying this unit.
PRODUCT WARRANTY: All equipment is fully tested before dispatch and carefully designed to provide you with trouble free use for many years. We have a policy of supporting products for as long as possible and guarantee to be able to support your product for a minimum of 10 years.
EU DECLARATION OF CONFORMITY FOR: Virgil OB Two audio input, PoE headphone amplifier This declaration of conformity is issued under the sole responsibility of the manufacturer.
RoHS DIRECTIVE EC directive 2002/95/EC restricts the use of the hazardous substances listed below in electrical and electronic equipment. This product conforms to the above directive and for this purposes, the maximum concentration values of the restricted substances by weight in homogenous materials are: Lead Mercury Hexavalent Chromium Polybrominated Biphenyls Polybrominated Diphenyl Ethers Cadmium 0.1% 0.1% 0.1% 0.1% 0.1% 0.
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT REGULATIONS 2006 (WEEE) Glensound Electronics Ltd is registered for business to business sales of WEEE in the UK our registration number is: WEE/JJ0074UR Page 7 of 26
GLENSOUND VIRGIL OB Handbook Contents Issue 1 Description Page No. Contents IMPORTANT SAFETY INSTRUCTIONS ........................................................................................................... 3 PRODUCT WARRANTY: .................................................................................................................................... 4 OVERVIEW ...................................................................................................................................
OVERVIEW Virgil was the Roman poet who guided Dante through Hell and Purgatory, the Glensound Virgil OB is a clever little headphone amplifier for providing crystal clear audio into studio & broadcast headphones.
PANEL LAYOUT & FUNCTIONS Front Panel 1. Power ON LED 2. Volume Control 3. Headphone Connections 1. Power ON LED This bright blue LED indicates that the Virgil 1 is receiving power from the network and is working correctly. 2. Volume Controls This potentiometer equally adjusts the headphone volume of the two input circuits being received from the Dante network. It also can adjust the output volume of the balanced line level XLR outputs on the rear panel. 3.
Rear Panel 4. Network Connection 5. Analogue Audio Outputs 4. Network Connection This is a standard network RJ45 connector. Connect this to your Dante®/ AES67 network to provide the audio source for the Virgil OB. The unit may also be powered from a suitable PoE (Power Over Ethernet) switch or mid span power source. 5. Analogue Audio Outputs This pair of line level (0dBu) balanced analogue audio outputs are derived from the 2 incoming network audio sources.
Side Panel 6. USB Socket 7. Post/ Pre Fader Switch 6. USB Socket This micro USB socket has a dual purpose. It can be used to either power the Virgil OB from a suitable standard USB power source and it also provides a connection for a computer to upload new firmware into the unit if ever advised to by our technical department. 7.
CONNECTING THE VIRGIL OB TO A DANTE NETWORK The Virgil OB is a network audio device utilizing the reliable and versatile Dante® audio over IP protocol. Dante is a proprietary system (although very widely used) the originators of which are Audinate. The information below is only meant as a very basic guide. Full details of the power of Dante network audio and instructions for using it can be found at www.audinate.com Two Audio Inputs There are just 2 audio inputs to the Virgil OB from the Dante® network.
Running Dante Controller At the time of writing this manual, Dante Controller looks as per the screenshot below: The Virgil OB will have been named at the factory during test to allow them to be identified by the Dante controller. The format used for the factory name is: ‘Virgil-serial-XXX-YYY’. ‘XXX’ will be the units 3 digit serial number, and ‘YYY’ will be the Vita’s MAC address.
HEADPHONE OUTPUT ATTENUATION By default the Virgil OB’s front panel headphone volume potentiometer is set to allow an output level off between -20 and +10dB (measured into 600 Ohms). This means that incoming audio signals cannot be completely turned off (which many broadcasters find useful to stop ‘talent’ turning important audio information off and missing vital cues). It is possible to alter the range of the volume potentiometer to allow the headphone output to become fully attenuated (off).
AES67 MODE The Virgil OB uses a chipset from Audinate called Ultimo for its network audio interface. Audinate are the company behind Dante® and as such the chipset’s primary network audio protocol is Dante®, however Audinate have enabled their chipset to comply with AES67 and therefore the AoIP22 can be set to AES67 mode for interaction with other AES67 devices.
2. Receiving AES67 Audio Once a compatible AES67 stream is detected on the network by Dante ® Controller the AES67 flows will appear in the Dante Transmitters section in the Routing tab. 3. AES67 Restrictions Received AES67 flows have the following constraints: Multicast Only Non-redundant Destination address in range 239.nnn.0.0 to 239.nnn.255.255 (239.nnn/16), port 5004. Must match destinatio address range.
UPDATING FIRMWARE The Virgil OB is a digital audio system comprising of a Micro Controller and DAC converters. These items run software and may need to be occasionally updated. Equipment needed A windows based PC USB Type A to Micro B cable A copy of ‘DfuSe Demo’ software The latest firmware from Glensound An Virgil OB Instructions 1. Download and install DfuSE Demo ‘DfuSE Demo’ is a firmware updating tool that is required for loading new firmware on to the Virgil OB.
4. Firmware update preperation To prepare the Virgil OB for a firmware update; 1. Connect the unit to a PC via the USB connector 2. Power on the unit (connect to a PoE switch) Your PC should make an audible sound when this process is successful as windows is detecting a new USB device. 5. Loading the firmware Now open DfuSe Demo. If the Virgil OB successfully entered DFU mode then it will appear as ‘STM Device in DFU Mode’ under the ‘Available DFU Devices tab’.
Now the .dfu file needs to be selected so that DfuSe Demo knows the correct firmware to put on to the Virgil OB. Figure 3 Choose .dfu file Click choose and then select the .dfu file that you downloaded from the Glensound website. This will be located in your downloads folder by default. If the file loads successfully then it will read along the bottom ‘File correctly loaded’.
6. Upgrading the Virgil OB firmware The firmware is now ready to be put on to the Virgil OB. Tick the ‘Verify after download’ box first and then click ‘Upgrade’. Figure 5 Upgrade Click yes to proceed. Figure 6 Start upgrade Figure 4 .
The progress bar along the bottom will show the status of the operation.If the operation was successful, DfuSe Demo will report that “Targery 00: Verify Successful!”. Figure 7 Upgrade status You may also see that it will report how much data was successfully transferred.
7. Final steps Now click “Leave DFU mode” to finish the procedure.
UPDATING THE ULTIMO CHIPSET The Ultimo Chipset is a device supplied by Audinate that does most of the processing for the actual Dante/ AES67 network audio streams. There is one Ultimo Chipset in each Virgil OB. We supply special code (a .dnt file) that sets up/ initiates the Ultimo Chipset and makes it work in particular way that is compatible to the Virgil OB. 1.
WIRING INFORMATION RING TIP SLEEVE STANDARD HEADPHONE WIRING: TIP: A/ LEFT Ear RING: B/ RIGHT Ear SLEEVE: Common/ Earth PLEASE NOTE: MONO HEADPHONE JACKS CAN BE USED WITHOUT CAUSING ANY DAMAGE TO THE VIRGIL OB Page 25 of 26
SPECIFICATION AUDIO Headphone Impedance 32 to 1000 Ohms (Auto output level to match impedance) Maximum Headphone Output +15.8dB into 600 Ohms Headphone Frequency Response >= -0.1dB 22Hz to 22kHz Headphone Noise -74dB @ lineup (residual noise) Headphone THD + Noise (ref =8dBu) 0.008% @ 1kHz Headphone Volume Pot Range +10dB to -20dB (standard) +10dB to Off (to special order) Output Power 1 Watt Headphone Jacks 1 x 6.35mm (1/4") & 1 x 3.
