Phoenix Audio Stingray User manual

Operating Manual
MT700 Stingray Distributed Array Mixer
© 2018 Phoenix Audio Technologies

Operating Manual –MT700 Stingray
Phoenix Audio Technologies
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MT700 Stingray Distributed Array Mixer
Operating Manual
Phoenix Audio Technologies
Please read this manual carefully before using the Phoenix Audio Technologies MT700 Stingray
Distributed Array Mixer.
For additional assistance and updates please refer to our website www.phnxaudio.com. To contact
Phoenix Audio Technologies support, send an email to [e-mail].
All rights reserved. No part of this publication may be reproduced without the prior written permission
of Phoenix Audio Technologies.

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Table of Contents
All-In-One Audio Smart Mixer ...................................................................................................4
MT700 Stingray Overview ......................................................................................................... 5
Specifications ............................................................................................................... 5
Using the MT700 Stingray Mixer................................................................................................ 7
Mixer Settings................................................................................................................ 8
Four-way Bridging........................................................................................................ 14
Using the Dashboard Interface ................................................................................................ 15
Microphone Mixer Utility .........................................................................................................17
Microphone Mixer Settings .......................................................................................... 18
Line Mixer Utility .................................................................................................................... 22
Line Mixer Settings ...................................................................................................... 23
Expanded Audio Coverage With Daisy Chaining....................................................................... 26
How to Create Zones .............................................................................................................. 31
Zoning Quick Reference ................................................................................................37
Setting Up The SIP Client ........................................................................................................ 38
Limited Manufacturer’s Warranty............................................................................................ 39

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All-In-One Audio Smart Mixer
Complex problem? Simple solution.
People expect a conference room to provide an audio environment that allows them to speak
freely and naturally, without having to worry whether others can hear them. At the same time,
conferencing space design continues to evolve, and staying ahead of new technologies can get
expensive, time-consuming, and reduce user productivity. Organizations need high-quality
audio conferencing technology that is both flexible and easy to operate.
The MT700 Stingray Distributed Array Mixer from Phoenix Audio Technologies is an all-in-one
smart mixer that responds to rapidly evolving communication trends, conference environments,
and connectivity technologies. Used on its own or in tandem with video, the MT700 Stingray
Mixer offers a simple solution to the complex requirements of today’s professional conferencing
spaces.
On the inside, an audio component can be complicated, but on the outside it has to be easy to
use. At Phoenix Audio Technologies we specialize in designing and manufacturing high -quality
audio solutions that require no specialized training or certification to use or deploy. The MT700
Stingray Mixer’s flexible design and proprietary, distributed array technology make it an ideal
solution for anyone in any conference room setting.

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MT700 Stingray Overview
Specifications
Power LCD screen
• Options and setting menu
• Mixer and network information
Directional pad
• Four (4) directional buttons and one
(1) center button
The LCD readout displays the:
• Device name
• Device chain location number
• Local IP address to which the device is connected

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Using the MT700 Stingray Mixer
The MT700 Stingray Distributed Array Mixer is an eight-channel –four (4) microphone / four (4)
line input –automatic DSP (digital signal processing) mixer for installed room applications. Its
proprietary daisy-chain protocol allows you to extend the number of supported inputs up to a
maximum of 60. The MT700 Stingray is networkable and can be controlled using any device –PC,
tablet, smart phone, etc. –residing on the same local area network. The mixer features its own
SIP client and supports USB, SIP, and analog communication for use with VoIP, SIP client, and
video conferencing codec solutions.
Each MT700 Stingray is equipped with four (4) amplified loudspeaker outputs that can push four
(4) 8 Ω Ω loudspeakers with 15 watts of power. You can network up to 15 MT700 Stingray mixers
into a single daisy chain with up to 15 individual zones. Additionally, you can assign up to four (4)
auxiliary or podium microphone inputs per zone, and play back input using sound reinforcement
via the room’s loudspeakers. The MT700 Stingray offers proprietary echo-canceling, noise-
suppression, distributed-array beamforming, AGC, and automatic mixing technologies from
Phoenix Audio Technologies.
Follow these instructions to customize MT700 Stingray options and settings to fit the unique
requirements of your conferencing space. Configure the MT700 Stingray using either the keypad
directional buttons and corresponding menu selections on the LCD readout, or using a browser
on a device connected to the local network. Access the menu screen by pressing the center
[ENTER] keypad button. Use the directional buttons to select the microphone and line -out levels
screen.

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Mixer Settings
To configure the MT700 Stingray Mixer, select from the seven options on the menu-access
screen. When ready to make a selection, press either the center [ENTER] keypad button, or the
keypad’s rightward directional [>] or downward directional [v] button. To return to a previous
screen press the leftward directional [<] or upward directional [^] button.
Configuration options
1. Primary/secondary selection
Use this option to identify and select primary and secondary MT700 Stingray Mixer(s)
connected in a daisy chain. A primary mixer is the unit connected directly to your
intended communication mode –SIP, USB, or analog, for example. Designating a daisy-
chain primary mixer automatically opens its connection to your intended communication
mode and applies all primary settings to the secondary units that follow. When you

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designate a primary unit in the daisy chain, you disconnect from your communication
mode any other mixer that precedes it in the chain.
Designating a secondary mixer in a daisy chain automatically deactivates its direct
connection to your communication mode and instructs the secondary mixer to inherit all
settings assigned to the primary mixer.
If you attempt to connect a mixer that has been added to a daisy chain incorrectly, you
receive the error message, “can’t be set as secondary.”
2. Automatic mixer selection
Use this option to select from one of two settings:
1) Mix microphone input
2) Mix line input
When you select mix microphone input, the DSP processes and “beamforms” – or focuses
the voice signal –the microphone input, then adds the line input. All microphone input
from primary and secondary mixers in a daisy chain are mixed together, with automatic
mixing controlled by the primary mixer. The unit mixes input from any networked
secondary mixer(s) and transmits the signal upward in the daisy chain to its primary
mixer, The primary mixer mixes in its microphone input automatically and transmits the

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final signal to analog, USB, and SIP outputs via its own, unique channel.
When you select mix line input, the DSP processes the line input and disables the mix
microphone input automatically. All line inputs from both primary and secondary mixers
networked in a daisy chain are mixed together. The unit mixes input from any networked
secondary mixer(s) and transmits the signal upward in the daisy chain to its primary
mixer. The primary mixer mixes in its line input automatically and transmits the final
signal to analog, USB, and SIP outputs.
3. Microphone input setting
Use the microphone input setting to control individual microphone sensitivity within a
group of microphones. To help set audio levels, the MT700 Stingray Mixer detects
microphone sensitivity and displays it graphically. Use the directional keypad on the LCD
screen to select and isolate a microphone. Then listen to the microphone line in using
either headphones or a loudspeaker connected through the monitor output or speaker
output lines. A mute request from any single microphone mutes all the connected
microphones.

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4. Line input setting
This option configures the line-input channels, with three choices offering sound-
reinforcing capability from which to select: mute, auxiliary or podium.
Choose:
o Podium: to configure a microphone that transmits the user’s voice to local
loudspeakers and to neutralize room echo. Input is added to the result of the
mixing process.
The signal may be played back on local loudspeakers with volume adjusted at the
master level.
o Auxiliary: when configuring a media-playback device that does not receive local
audio and does not require echo cancellation. Input is added to the result of the
mixing process.
The signal may be played back on local loudspeakers and you may program up to
(4) four separate volume levels:
▪ ▪ Level of signal sent to far end
▪ ▪ Local loudspeakers –primary mixer output 1 and 2
▪ ▪ Local loudspeakers –primary mixer output 3 and 4

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▪ ▪ Local loudspeakers –all secondary mixer output level
o Mute: to silence the line. The line inputs default to mute when mixing is applied to
microphone inputs.
5. Speaker setting
Use the speaker setting to control the maximum output level transmitted to
loudspeakers via the master volume. Also use this option to balance the level of USB, SIP
or analog audio inputs.
6. General settings
Configure general settings to:
o Restore the MT700 Stingray Mixer settings to the factory default
o Manually disconnect the dashboard interface to pair a new device

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o Program the duration of the display timeout
o Adjust display brightness
Selecting restore factory default prompts you with a message confirming your intention
to reset the MT700 Stingray Mixer. Use display brightness to select from one of six
brightness levels, which defaults to the highest setting, six. Display timeout allows you to
set the length of LCD display-screen illumination to one of four durations:
o 30 seconds
o 60 seconds (default)
o 2 minutes
o 3 minutes
7. Information
Select information to view the settings assigned to an MT700 Stingray Mixer, including:
o DSP version
o IP address
o MAC address
o Mixed microphone and line-input selections
o Primary or secondary unit status
o Serial number
o SIP version
o Unit ID
o Unit name

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Four-way bridging
The MT700 Stingray Mixer offers four-way bridging of local, USB, analog and SIP signals.
Bridging transmits microphone settings to all interfaces simultaneously while allowing you to
adjust loudspeaker levels locally.

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Using the Dashboard Interface
Use an IP address assigned to the MT700 Stingray Mixer to access its dashboard interface via a
browser on a device connected to the local network. Using a browser to access the dashboard
gives you remote access to the Stingray settings. The browser interface also provides access to
more precise options and settings that are unavailable via the LCD menu. For optimal
performance, assign a static rather than a dynamic IP address so that the IP address remains
unchanged. When logging in for the first time, use the default username, “admin” and default
password “1234”.
Device Setup
• Edit the settings of an individual MT700 Stingray
Mixer or other units in a daisy-chain sequence
Menu
• Access device/chain setup or SIP client setup
via the drop-down menu
Mixer set to primary
• Assigns primary status to an
MT700 Stingray Mixer
connected in a daisy chain.
SIP Client Setup
• Access controls for Configuration, Management,
Status and Diagnostics tabs for the MT700
Stingray Mixer
Quick Link to Phoenix Audio Technologies website
• www.phnxaudio.com

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The device setup screen shows all MT700 Stingray Mixers connected to the primary mixer’s IP
address. Select a mixer to modify its name, assign primary or secondary status, and edit primary
parameters.
Use the primary parameters to adjust microphone sensitivity and loudspeaker master volume
level, set line-input balance and volume levels, and designate podium or auxiliary input.

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Microphone Mixer Utility
Microphone mixer settings control input from up to four microphones and four lines in. Each
microphone input produces a single, beamforming audio output with noise cancellation, echo
cancellation, and automatic gain control.

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Microphone Mixer Settings
To function properly, all microphones in use must be the same model. Use the browser
dashboard interface to select from a broader menu of settings, which enables greater control
and precision.
• Microphone Tab –Adjust microphone sensitivity for all microphones attached to MT700
Stingray Mixer microphone inputs. This master control applies one sensitivity setting to
all microphone inputs. There is no sensitivity setting for individual microphones.

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• Speaker Tab –Use this setting to bridge multiple devices that have different volume
input levels. Level the loudspeaker output by balancing signals from individual USB, SIP
and analog inputs. Then use the master volume slider to adjust the overall loudspeaker
output level.
• Line Tab –Each line input has its own, individual control and may be set to mute, podium
or auxiliary. Hardware plugged into these lines is not beamformed, though the signal
receives all other DSP processing.

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o The podium setting assigns priority status to the line and applies voice lift, which
broadcasts the user’s voice through any connected loudspeakers. Several
processing effects improve the quality of the audio input transmitted over this line,
including:
▪ Noise cancellation
▪ Echo cancellation
▪ Automatic gain control
Also use this setting to balance the local loudspeakers, and adjust secondary and
send-out levels.