Logitek Electronic Systems, Inc.
5622 Edgemoor Dr.
Houston, TX 77081
United States of America

Tel       (713) 664-4470

Web    logitekaudio.com

Email   support@logitekaudio.com

Copyright © 2020 Logitek Electronic Systems, Inc.

Notice

Every effort has been made to supply complete and accurate information. However, Logitek Electronic Systems, Inc. assumes no responsibility for its use, nor any infringement of patents or other rights of third parties, which would result.

This product contains Livewire and Livewire+ technologies used under license from TLS Corp. TLS Corp patent information is available at https://telosalliance.com/legal

This product contains Ravenna technologies used under license from ALC NetworX GmbH.

Dante is a trademark of Audinate Pty Ltd and its technologies are used under license. Audinate patent information is available at https://www.audinate.com/legal/patents-and-trademarks

Worldwide rights reserved. Except for your own personal use, no part of this publication may be stored in a retrieval system, transmitted or reproduced in any way, including but not limited to photocopy, photograph, magnetic or other record, without the prior agreement and written permission of Logitek Electronic Systems, Inc.

Logitek is a trademark of Logitek Electronic Systems, Inc.

All other trademarks acknowledged.

Thank you for purchasing a mixIT Audio Console System. The mixIT is an affordable, easy to use Audio overIP system. With support for Ravenna, Livewire+, and AES-67 AoIP built in and Dante support available as a plug-in option, the mixIT is easy to integrate into an existing AoIP facility or the perfect introduction to the world of AoIP.

The mixIT is powered by the JET67 Audio Engine. The JET-67 is where all of the audio and network connections are made. It also delivers power to the audio console. We designed the JET67 to have sufficient inputs and outputs to connect most studio equipment for the room based on fader size.

A 4 port Ethernet switch is built into the JET-67. It has two 1GB ports and 2 10/100 ports. The Ethernet connections are used to configure the engine and to connect Audio over IP devices.

Logitek customers with older JetStream Mini and JetStream Plus Audio Engines can also use the mixIT console in place of the JET-67 with a special power supply available from Logitek. The setup of these systems is covered in a different manual.

The mixIT console is not compatible with the Logitek AE-32 Audio Engine.

The mixIT-12 console is a kit that contains the following:

MIXIT-C12       mixIT 12 Channel Surface
JET67               JET67 Audio Engine with 2 J67-I/O cards installed.

 

This system contains:

• 12 fader touchscreen controlled audio console
• 4 microphone inputs with phantom power
• 6 stereo analog inputs
• 2 digital inputs
• 8 stereo analog outputs
• 2 digital outputs
• 4 port Ethernet switch (2 x 1GB/2 x 10/100)
• AES-67 Audio over IP networking using the following stream discovery protocols: Ravenna, Livewire, Audinate/Dante in AES-67 mode.

The mixIT-6 console is a kit that contains the following:

MIXIT-C6         mixIT 6 Channel Surface
JET-67              JET67 Audio Engine with 1 J67-I/O cards installed

This system contains:

• 6 fader touchscreen controlled audio console
• 2 microphone inputs with phantom power
• 3 stereo analog inputs
• 2 digital inputs
• 4 stereo analog outputs
• 2 digital outputs
• 4 port Ethernet switch (2 x 1GB/2 x 10/100)
• AES-67 Audio over IP networking using the following stream discovery protocols: Ravenna, Livewire, Audinate/Dante in AES-67 mode.

This is a card that plugs into the main DSP board of the JET-67 and adds 32 x 32 channels of native Dante networking in addition to the AES-67 networking built into the JET67.

If you did not order the JET-67 DANTE card when you bought your system and decide to add it later, it can be installed in the field. The only tool you will need is a screwdriver.

Founded in 1979 by two Rice University students, Logitek has made audio consoles for television and radio for more than 40 years. After helping found the campus radio station and installing a donated audio console at KTRU, the pair decided they could design a better one themselves and the company was born.

In the late 1990s, Logitek was the first North American company to offer a router-based digital console. Its first virtual PC-based console was introduced in 1999. By 2009, the company had pivoted to television, offering both physical and virtual consoles that seamlessly interface to production workflow automation systems.

mixIT represents Logitek’s return to its radio roots, offering a simple user interface, modern control, and the latest in standards-based networking technology at an attractive price.

Our vision for Audio over IP is simple: we believe that over time, every piece of audio equipment will have an Ethernet jack on it, and it should be as easy to connect something to the audio network as it is to plug an XLR into an analog or digital board.

The following is necessary to configure your system:

• A computer running Windows 10
• An Ethernet adapter to connect your computer to the JET67
• JetStream Server, available at https://logitek.link/J67Server
• A web browser, such as Chrome, Internet Explorer, or Microsoft Edge. Firefox is not supported.

We are working on a new web server that will be compatible with Windows, MacOS, and Linux, but until it is ready, Windows 10 is required.

Download Jet67 Server here: https://logitek.link/J67Server

Create a folder on your PC called C:\Logitek and unzip the contents of this file there.

Run the program called Jet67Server when instructed to run JetStream Server in the next steps.

Using the supplied standard CAT-5 cable, plug one end into the RJ-45 port on the back of the JET-67 and the other end into the RJ-45 port on the back of the console.

While we use a standard Ethernet cable for this connection, this is NOT an Ethernet connection, so don’t plug it into an Ethernet switch! The console and JET-67 communicate via a RS-485 serial connection. We are also sending power on one pair of wires and AES-3 digital audio on another pair of wires to drive the cue speaker.

We recommend CAT-5 for this connection to adequately provide power to the console. CAT-6 and/or thin ribbon network cable generally use thinner wire which won’t work for this purpose. Good old-fashioned CAT-5 or CAT-5e will always work, even at a distance of 25 feet.

The JET67 uses quick-connect Phoenix-style terminal connectors. Insert tinned wire into the slot and tighten the screw to secure the wire. Each terminal block has a positive terminal, negative terminal, and common ground.

The JET67 works best with balanced audio. If you have an unbalanced input, we recommend jumpering negative to ground if you don’t have a matching transformer.

Unlike a traditional audio console, the mixIT controls an audio router. Therefore, you’ll notice there isn’t an output that’s labeled “program” or “monitor.” You decide where you want to wire your inputs and outputs and then configure everything in the software.

Instead of having an A/B switch over the fader, you’ll choose in the software what sources are allowed on each fader. You can have as many or as few choices as you’d like.

In the software, you will choose how many channels and input or output has (stereo or mono). You can split a stereo pair into two mono channels on either an analog or digital input or output.

Note that if you route a stereo mix to a mono output, the JET67 will NOT sum the two channels; you will hear left channel only. (However, if you’re wiring up an AM radio station, we do offer a mono program mix output so we can sum program for you.) If you route a mono input (such as a microphone) into a fader, the JET67 will copy the left channel to the right so the input will feed both left and right.

Overview

We use a program called JetStream Server to make an IP connection to the DSP card inside the JET67 to configure the engine.

JetStream Server, in turn, serves web pages to your web browser to enter information and upload to the engine.

Your configuration is stored in memory on the JET67. After you have configured the JET67 you can disconnect your PC and the audio engine will continue to control the computer. It is not necessary for JetStream Server to be connected to operate the console.

The configuration will remain in memory on the JET67 even if power is disconnected.

You can save the configuration in a JET67 to an .XLS file and keep it backed up and you can restore that .XLS file to the JET67 using JetStream Server.

Connect Your PC to the JET67

• The default address of the JET67 is 192.168.67.200
• Plug your laptop into one of the ethernet ports on the back of the unit. It doesn’t matter which one you use; NET 1 and NET2 are 10/100/1000 and the other 2 ports are 10/100.
• Set your laptop’s network card to an address in the 192.168.67.x subnet
• Launch JetStream Server.
• After startup completes, go to the External Comm tab.

• In the lower right corner, locate External Protocols.
• Change the Protocol Name from None to Logitek LP2.
• Click on the TCP/IP tab.

• Under TCP/IP client, type the IP Address of the JET67 in the Remote IP Address field. Set the Remote TCP/IP port to 9500
• Return to the Set up tab.

• Check the box for Connection Enabled as TCP/IP Client. A green box will appear on the TCP/IP tab showing that the connection is good. (If you run into any issues, you may need to open the Windows firewall to traffic on TCP port 9500.)
• Open your web browser. (Any modern browser except for Firefox will work.)
• Enter 127.0.0.1 into the address bar of your browser and hit enter.
• You will see the login screen. For username, enter user. Leave the password blank. Click Connect.

• After logging in, you will be on the Local IO Page.

The first column is the microphone inputs. The second is the analog inputs. The third is the digital inputs. The fourth is the analog outputs. The fifth is the digital outputs.

To add an input or output, click the ‘Add Input’ or ‘Add Output’ button over the respective column. To edit an input or output, click on the box for the desired input or output.

Changing the JET67 IP Address

After you have connected JetStream Server, click on the Administration tab in JetStream Server (not in the web browser).

Change the Net 1 address from 192.168.67.200 to your desired address.

If you have a DHCP server present on your network, enter 0.0.0.0 to set the JET67 to use DHCP. (Auto IP is not currently available)

To commit your changes, go to the JetStream Log tab and then click Hardware Reset. The JET67 will reboot with the new address. Remember to change the IP address on the External Comm tab to the new address so Server can reconnect.

Important note if you are using DHCP: To determine what IP address the JET67 has obtained, connect the console to the JET67’s Console port. Tap on the word mixIT on the touchscreen. The IP address will appear. If the console was connected while the console was booting up, you may get a blank box when you tap on mixIT. If that happens, unplug the console cable from the back of the mixIT, wait a moment, plug it back in, and then tap mixIT again to see the IP address.

Changing the JET67 IP Address

After you have connected JetStream Server, click on the Administration tab in JetStream Server (not in the web browser).

Change the Net 1 address from 192.168.67.200 to your desired address.

If you have a DHCP server present on your network, enter 0.0.0.0 to set the JET67 to use DHCP. (Auto IP is not currently available)

To commit your changes, go to the JetStream Log tab and then click Hardware Reset. The JET67 will reboot with the new address. Remember to change the IP address on the External Comm tab to the new address so Server can reconnect.

Important note if you are using DHCP: To determine what IP address the JET67 has obtained, connect the console to the JET67’s Console port. Tap on the word mixIT on the touchscreen. The IP address will appear. If the console was connected while the console was booting up, you may get a blank box when you tap on mixIT. If that happens, unplug the console cable from the back of the mixIT, wait a moment, plug it back in, and then tap mixIT again to see the IP address.

Changing The JetNet Number

Each JET67 needs a unique number to avoid duplicating multicast addresses with other devices.

If you are integrating the JET67 in a Livewire environment, think of the JetNet Number as the same as the Node Number on an X-Node, and choose a JetNet Number that doesn’t conflict with your X-nodes.

We take this number and use it to select what channel number range to use as follows:

JetNet Number * 100 + stream number = Livewire channel number.

For example, the first stream created by a JET67 set to 3 is using Livewire channel 301.

The JET67 will come to you set to as JetNet 1 by default. If you need to change it, do the following in Jet67 Server:

Click on the Administration tab.

Change the JetNet number and hit enter.

Click on the JetStream Log page.

Click Hardware Reset. You may need to restart Jet67 Server after this step.

The change will take effect after the engine has restarted.

To create a new input, click Add Input in the Mic In column. To edit an existing input, click the box for the input. You will be taken to the input editor.

You will need to fill in the following information:

1. The Surface Label is what the operator will see on the console. There are two fields of 8 characters for the top and bottom line on the display.
2. Enter a Unique Name to identify the input.
3. Set the Number of Channels to 1.
4. Set the Lf channel to the input number. Valid numbers on a mixIT-12 are 1-4. Valid numbers on a mixIT-6 are 1-2.
5. If you are using a GPI Input to turn the microphone on or off, enter the GPI input number in the start or stop box. If you are using a momentary cough switch, enter the GPI input number in the Cough Valid numbers are 1-4.
6. For a tally light that will turn on and off ONLY for this microphone (example, a tally light ring on a microphone arm) enter the GPI Output number in the Audio Tally box. Valid GPI output numbers are 1-8.
7. Assign the microphone to a mute group if desired to set up studio muting and a on air light tally that will turn on when the first microphone turns on and off when the last microphone turns off. (example: to put all microphones in the first mute group, put a 1 in the Mute Group box for each microphone.) To assign the bus to be muted and the GPI outputs to the Mute Tally, you will configure the Mute Group under Control Settings.
8. To adjust the gain of the mic preamp, enter the value in DB in the IO Gain box. Negative numbers reduce gain, positive numbers increase it. The valid range is xxx
9. To enable Phantom Power for the input, set Phantom Power to Yes.
10. To send the audio from this input to the audio network so other AES-67 devices can use it, check Yes for Send to Network. Set Network Latency to Low. The JET67 will stream this source to the network and announce it to other devices using the surface label that you entered.
11. Click Upload to JetStream to save your changes.
12. To delete this source, click Delete this local input.
13. To cancel and return to the Local IO page, click Cancel edit changes.

To create a new analog input, click Add Input under the Analog In column. To edit an existing input, click the box for the desired input to open the editor.

You will need to fill in the following information:

1. The Surface Label is what the operator will see on the console. There are two fields of 8 characters for the top and bottom line on the display.
2. Enter a Unique Name to identify the input.
3. Set the Number of Channels to 1 for mono, 2 for stereo.
4. Set the Lf channel to the left analog input number and the Rt to the right analog input number. (if mono, there will only be the Lf box to fill.) Valid numbers on a mixIT-12 are 1-12. Valid numbers on a mixIT-6 are 1-6.
5. The Mode setting determines how the fader will handle the audio when the source is routed to the fader. The choices are:
   Default: if this source is two channels, it will be stereo. If this source is one channel, it will be mono.
   Mono: if selected, a two channel source will be summed when it is routed to the fader.
   Phase: phase reverse a two channel source
   LL: send the left channel only to both left and right
   RR: send the right channel only to both left and right
   Lx: left channel on left, silence on right
   xR: silence on left, right channel on right
   5.1: this function is not supported by the JET67
6. If you are using a GPI Input to turn the fader on or off, enter the GPI input number in the start or stop box. The Cough box will mute the input when that GPI input turns on. Valid numbers are 1-4.
7. For GPI Outputs: Audio Start pulses a relay when the channel turns on. Audio Stop pulses a relay when the channel turns off. Audio Tally latches a relay on when the channel turns on and turns the relay off when the fader turns off. Valid numbers are 1-8.
8. UDP Control: This sends ASCII text via UDP to the specified IP address using the specified port, usually for automation control. The Start String is the text sent when the channel turns on and the Stop String is the text sent when the channel turns off.
9. To adjust the gain of the input, enter the value in DB in the IO Gain box. Negative numbers reduce gain, positive numbers increase it. The valid range is xxx
10. Mix Minus Bus: type in the number of the mix minus bus to have this input removed from the mix. (Example: if mix minus 1 is derived from program, then mix minus 1 will be program minus every input tagged with a 1.) More information about mix minus is found in DSP Settings, Mix Minus tab.
11. To send the audio from this input to the audio network so other AES-67 devices can use it, check Yes for Send to Network. Set Network Latency to Low. The JET67 will stream this source to the network and announce it to other devices using the surface label that you entered.
12. Click Upload to JetStream to save your changes.
13. To delete this source, click Delete this local input.
14. To cancel and return to the Local IO page, click Cancel edit changes.

Digital inputs are handled exactly the same as analog inputs in the editor. The only difference is in the channel assignment.

AES audio carries two channels on one wire. Therefore, to assign a stereo input on AES input #1, assign left to channel 1 and right to channel 2. To assign a stereo input to AES input #2, assign left to channel 3 and right to channel 4.

You can also split the mono channels into separate inputs. (For example, a satellite receiver might have separate programming on left and right channels or a AES mic preamp might have microphone 1 on left and microphone 2 on right.) In this case you would set number of channels to 1 and select 1, 2, 3, or 4 as desired.

For all other settings, follow the analog input instructions.

To create an output, click Add Output in either the Analog or Digital column.

To edit an output, click on the box for the output that you wish to edit.

You will see the output editor.

Fill in the following information:

1. Surface Label – two fields of 8 characters to identify the source internally on the JetStream State page
2. Unique Name – give the source a unique name
3. Number of channels – select 1 for mono, 2 for stereo.
4. Assign the channels. For mono, set the Lf channel to the desired output number. For stereo, set the LF and Rt channels to the desired outputs for left and right. If this is analog, the channel number will correspond with the output number. If this is digital, 1 and 2 are the left and right channels of AES output 1; 3 and 4 are the left and right channels of AES output 2.
5. Default Source – choose what audio should be fed to the output. This pick list has each input along with the console mixes. Available console mixes:
   Program Out – the main program mix
   Aux 1 Out – the aux 1 mix bus
   Aux 2 Out – the aux 2 mix bus
   Aux 3 Out – the aux 3 mix bus
   Studio Out – the studio monitor output. This corresponds to the Studio/Guest volume knob on the console. Usually used for talk studio monitor speakers or for guest headphones.
   Phones Out – the headphone monitor output. This corresponds to the Headphone volume knob on the console. Usually used to feed the headphone amp of the console operator.
   Phones PF – pre-fader output of the headphone monitor. Often used to feed guest headphone amps with individual volume controls. The audio will follow what the operator selects in the headphone monitor input, but the volume knob will be ignored. This way the board operator who is listening to Phones Out can turn the volume up and down without disturbing the guest.
   Monitor Out – the control room monitor output. This corresponds to the Monitor volume knob on the console.
   MM 1 – MM 24 – Mix Minus outputs 1-24. See the Mix Minus section under DSP Settings to learn how to configure mix minuses.
   Mixer A Out – This is a three channel submixer that sums the source routed to MixA1, MixA2, and MixA3 on the Surface Settings page. Commonly used to sum together microphones for telephone feeds, it’s a lot easier to tick 3 boxes on a web page than bury a Shure mic mixer under the console like we all used to do to feed the phone!
   Mono PGM – the program bus, summed to mono
   Mono Ax1 – the Aux 1 bus, summed to mono
   Router 1 Out – the output to Router 1, the left widget on the mixIT fader display.
   Router 2 Out – the output to Router 2, the middle router widget on the mixIT fader display
   Router 3 Out – the output to Router 3, the right router widget on the mixIT fader display

The Available Sources column on this page does NOT have a function on the JET67.

If you route a stereo mix to a mono output, the JET67 will send left channel only.

Send An Input To The Network

Click on a local input to edit it.

Check Yes on Send To Network.

Check AES if this is an AES-67 stream, Live if this is a Livewire stream, or Dante if this is a Dante Stream (J67-Dante card required).

Click Upload to JetStream.

The JET67 uses SAP to announce its streams to other devices. It may take up to 10 minutes for the other devices on your network to receive the announcement that a new stream is there. This is normal for SAP devices.

Send a Mix Bus To The Network

In the web browser, click on DSP Settings.

On the right side of the column is the list of outputs from the DSP. These are all of the mix buses created by the audio engine.

Click on the bus you wish to send to the network.

The Stream Name is the text that will be sent to other devices as well as appear on the console. You will find it helpful if you add the studio name or call letters to the second field so you can tell where this mix is coming from.

Check Yes on Send To Network. Check AES if this is an AES-67 stream, Live if this is a Livewire Stream, or Dante if this is a Dante stream (J67-Dante card required).

Click Upload to JetStream.

The JET67 uses a SAP system to announce streams to other devices. It may take up to 10 minutes for other devices to get the message that a new stream is there. This is normal for all SAP devices.

The Network IO Page

This page in the web browser shows streams being sent to the network as well as incoming streams from other devices.

Outputs To Network

While there is an “Add Outputs To Network” button here, you should use the “add to network” tick mark on the input editor and DSP Settings editor.

Note that the stream addresses aren’t real here. If this is an AES or Livewire stream, we derive the multicast stream address as follows:

JetNet number * 100 + last octet in the Stream IP address field = Livewire Channel ID number.

If this is a Dante stream, the first octet is the ID of the Dante card and the last octet is the stream number… but Dante does everything based on the stream name and device name and not IP address, so this is more of a housekeeping thing for us than it is for you routing a stream from a JET67 to another Dante device.

In reality, this tab isn’t anything for you to worry about. It’s the next tab that’s important.

Inputs From Network

Here you will see all of the network sources announced by other devices on the audio network.

Important things to note right away:

At the top, you see a message saying that Red Inputs from Network are NOT active. Ignore this message. It’s left over from the old Logitek networking system. Every stream will appear in red, always, and it’s fine.

You will notice that some of the Stream IP addresses are real and some aren’t. Again, this is normal; it depends on how the streams are being announced on the network (in particular, Dante is unicast so it’s not using multicast addressing).

What’s important on this page is that you have a list of every stream coming into your audio engine and this is where you will set things like mute groups, mix minus bus assignments, or GPI control for audio that’s not local to your JET67 and mixIT console.

Let’s start by clicking on a network input.

You’ll notice that this page is just like the local input pages, except you can’t edit the name of the stream or number of channels that are coming in.

Here’s what you can edit:

Mix Minus Bus assignment.

Mode. (If this source has two channels, Default means it will come up as stereo. You can also set the source to come up as mono, left only, right only, Lx, xR, or phase reverse)

GPI Inputs (assign a relay to turn the fader with this source on or off)

GPI Outputs (pulse an outgoing relay when a channel turns on and off or latch on with the fader button)

Mute group (assign this to mute the monitors with other mics in the studio)

Fader Start (turn on the channel when the fader is opened and off when the fader is closed.

Click Upload to JetStream when finished editing. You may need to click Refresh in Server for some changes to become effective.

Surface Settings

Here is where you assign sources to the faders.

The columns of this grid are the available sources. The lines in gray are mixes from the DSP such as program, aux, mix minus, and the built in tone generator. The lines in blue are local inputs. The lines with a beige background are network inputs.

Left click in the columns 1-12 to assign a source to a fader. This will place an x in the box.

Right click in the columns 1-12 to set the default route on a fader. This is the route that the console will return to when the system is sent to its default settings. This will place a circle x in the box. Only one default can be set per column. If no default is set, the first source in the column is automatically made the default.

In the column for Studio In, set what selections to choose from in the Studio/Guest monitor selector. Common selections here are program, aux 1-3, air monitor, or an input with a processed feed where the talent can hear the output of the on-air processing chain if they can’t listen to air because of profanity delay or HD Radio diversity delay.

In the column for Monitor In, set what selections to choose from in the Control Room monitor selector. Common selections here are program, aux 1-3, air monitor, or an input with a processed feed where the talent can hear the output of the on-air processing chain if they can’t listen to air because of profanity delay or HD Radio diversity delay.

In the column for Phones In, set what selections to choose from in the Headphone monitor selector. Common selections here are program, aux 1-3, air monitor, or an input with a processed feed where the talent can hear the output of the on-air processing chain if they can’t listen to air because of profanity delay or HD Radio diversity delay.

In the Talkback Mic column, select the microphone you want sent as talkback to a mix minus when you hit the talkback button on the console. This is also the audio sent to the caller when using the Add Mic When Off feature on the mix minus bus. You can only select one source as the talkback mic.

If you want to mix microphones together to feed to talkback, here are your options:

Assign one mic to MixA In 1, a second mic to MixA In 2, and a third mic to MixA In 3. Then set MixerA as the talkback mic.

or

Tick the Pre-fader aux bus box for one of the auxes (such as aux 3) and tick the box for the same aux bus for Independent Bus Switching. Then set the output of that aux bus as the talkback mic.

Cue Dir and Mon Mtr are not used on the mixIT.

MixA1 In, MixA2 In, MixA3 In. This is a three channel submixer used to combine three sources. Assign one source to the MixA1 column, one source to the MixA2 column, and one source to the MixA3 column. These will be summed together and output as Mixer A.

Route 1, Route 2, Route 3: These are the three router widgets on the right-hand side of the mixIT-12 or the three router widgets on the mixIT-6. Assign tick marks to the sources you want available to be routed by these router widgets the same way you assign sources to the console faders.. Assign the output to either a local or network output.

Tip: you can rename these routers to what they are feeding in the DSP Settings section under Inputs. The label will appear both in the Surface Settings and on the router widget on the console.

Click Upload to JetStream to save your work. If you leave the webpage without saving, any changes will be lost.

Port 1 Tab

This is where we can modify the DSP settings. Changes allowed:

Under Inputs, click on a fader to select which buses are turned on by default. Defaults for the faders is the program bus. If you wanted to make certain faders always turn aux on by default, click on the fader and put an x in the box of the bus you want turned on by default.

Also, under inputs, click on Router 1/Router 2/Router 3 to change the name displayed under the router widget. This is useful to name the router for its destination.

Under outputs, you can click on a DSP ouput to change the surface label of the mix bus. If you want to change Program to instead read “WKRP Program” here’s your chance.

Click to edit each mix minus bus. On the mixIT, 12 mix minuses are avaliable.

How To Set Up A Mix Minus

A mix minus starts with a mix bus such as program, aux 1, aux 2, or aux 3 and subtracts certain inputs from it. This is primarily used with remote broadcasts where there’s transport latency. You want the person in the field to hear everything in the mix but themselves. This prevents an echo coming back to the person in the field and making it difficult for them to talk.

The mixIT has 12 mix minus buses. You will tag the inputs, either local or network by editing them and entering the mix minus number and saving it. Then here on the DSP settings page you will define the mix minus bus and turn it on. Finally, you will route the output of the mix minus bus either to a local or network output to feed your equipment.

Here is what to do on the DSP Settings Page:

• Click on the line to edit the mix minus bus
• Set the Source Surface number to 1 (there is only one console).
• Set the Source Bus. This is the mix you are removing audio from. Usually this is program.
• If this is a stereo mix minus, Set Stereo to yes. If it’s a mono return feed, leave this as no. NOTE: if you set a mix minus bus to stereo, the next mix minus bus in the list will not be available as it is being combined with this bus to create 2 channels of audio.
• The final choice is “Add Mic When Off” or “Bus Always On.” Add Mic When Off is usually used for telephone hybrids. When the telephone fader that’s associated with this mix minus is off, the console will send the talkback mic as defined in Surface Settings to the caller. When the telephone fader is turned on and the caller goes on air, the console will feed program minus the telephone.Bus Always On is usually used with remote broadcast codecs. When selected, the console will always feed program audio to the remote minus the codec. That way when someone connects in the field they will immediately hear return audio and be sure they’re connected.

Once you have saved this, the mixIT system will be creating a mix minus and when you route it to an output you will hear the mix.

Things to remember: you can only assign one mix minus number to an input. If you assign the same number to more than one input, all of those inputs will be subtracted from the mix. You must turn on the mix minus here in the DSP settings page and either enable “add mic when off” (and have a talkback mic defined in Surface Settings) or enable “bus always on” for audio to come out of a mix minus output.

Control Settings

This is where we define microphone mute groups.

For a mute group you must choose the following:

• Which mix bus you wish to mute (either Monitor (control room) or Studio/Guest)
• Which tally or tallies you wish to turn on (numbers 1-8 are valid)
• If you check the cue bus, the monitors will be muted with a mic that’s a member of this mute group is put in cue
• The Active button must be checked for the mute group to be enabled. If left unchecked the console will ignore the mute group.

Once you have defined a mute group on this page, go to each microphone input (local or network) and put the mute group number in the box named Mute Group.

When the first microphone in the group is turned on, the monitors will mute and the tally relays will turn on and remain so until the last microphone in the group turns off.

There are 10 available mute groups in the system, although most stations use one or two. The first two mute groups are capable of muting more than one monitor bus. Up to three tallies can be defined per mute group to activate multiple on air lights, logging skimmers, and the like.

Audio Connections

The JET67 uses 5 pin European-style terminal blocks, commonly known as Phoenix connectors. These solderless terminal blocks are easy to connect.

Insert tinned wire into the slot. Use a small screwdriver to tighten the connection to the plug. Insert the plug into the jack on the back of the JET67.

The connections on the back of the JET67 are grouped as follows:

 

 

+	–	Gnd	+	–
Dig	In 1		Dig	In 2

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Dig	Out 1		Dig	Out 2

mixIT-6 and mix-IT-12

+	–	Gnd	+	–
Mic	In 1		Mic	In 2

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	In 1		Ana	In 2

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	In 3		Ana	In 4

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	In 5		Ana	In 6

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	Out 1		Ana	Out 2

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	Out 3		Ana	Out 4

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	Out 5		Ana	Out 6

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Ana	Out 7		Ana	Out 8

mixIT-6 and mix-IT-12

 

+	–	Gnd	+	–
Mic	In 3		Mic	In 4

mix-IT-12 only

 

+	–	Gnd	+	–
Ana	Out 9		Ana	Out 10

mixIT-12 only

 

+	–	Gnd	+	–
Ana	Out 11		Ana	Out 12

mix-IT-12 only

 

+	–	Gnd	+	–
Ana	Out 13		Ana	Out 14

mixIT-12 only

 

+	–	Gnd	+	–
Ana	Out 15		Ana	Out 16

mix-IT-12 only

 

GPIO

DB-15 Connector (female jack mounted on chassis)

 

1. Out-1               9.  +3.3 VDC
2. Out-2               10.  Out-7
3. Out-3               11.  In-1
4. Out-4               12.  In-2
5. Out-5               13.  In-3
6. Out-6               14.  In-4
7. Out-Common    15.  Out-8
8. Ground

 

Inputs grounded to activate. The maximum input is 12 volts. The outputs are opto-isolated electronic relays. The maximum load is .5 amps at 50 volts.

Operating the MixIT

The mixIT is very easy to use. The console uses touchscreens to select sources and bus assignments and knobs and buttons to adjust levels and turn faders on and off. This gives the operator the best of both worlds: simple menus and fewer buttons while still allowing someone to operate the board on air by feel without looking at where their hands are going.

Any source can route to any fader. The sources are assigned during the setup process using the Surface Settings menu in the web browser.

Tap the name of the source over the fader to change it. A list of choices appears. Tap the arrow buttons to scroll through the list. Tap the name of the desired source to route it to the fader.

The console has 4 main mix buses: Program, Aux 1, Aux 2, and Aux 3. Usually Program is the main on air output.

As with changing the route, tap the name of the source over the fader you wish to change. Tap P (Program), 1 (Aux 1), 2 (Aux 2), or 3 (Aux 3) to assign the fader to the mix bus. When you have made your selections, tap “Done.”

To raise the audio level of a source, move the fader up.

To decrease the audio level of a source, move the fader down.

The dashes silkscreened on the panel marked “0” represents unity gain. This is the normal level for most sources. At this setting, there is still 10 dB of gain available on the fader if needed.

To turn a channel on, press the top push button under the fader. The on button will glow green.

To turn a channel off, press the lower push button under the fader. The off button will glow red.

 

To audition a source before putting it on the air, tap the “Cue” button. This will send the source’s pre-fader audio to the cue speaker built into the console. Tap the cue button again to take the source out of the Cue bus.

There is a talkback button over each fader. If a mix minus is associated with this source (for example, a codec for remote broadcasting), tapping the Talk button will route the studio talkback microphone (as defined in surface settings) to the mix minus output. Tap the button again to turn talkback off and resume sending mix minus to the output.

There is also a Talk button next to the Guest/Studio selector. This is often used to feed a monitor to a separate studio. Tapping this Talk button will insert the same talkback microphone into the Guest/Studio monitor feed.

The Studio/Guest, Headphone, and Monitor selectors are on the far right. Tap the source to change what audio is being fed to these outputs. The volume knobs below the screen will adjust the level.

There are three utility routers on the console that can be used to change what is fed to the air chain, recorders, or remote codecs. Tap the box for the router to change the input.

There are 4 scene select buttons on the mixIT-12. Different console profiles can be stored to those buttons in setup. Press the button to recall the scene.

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