Solidyne DX816
Page 2
DX·816 - Broadcast mixing consoles
SOLIDYNE
Index
About this manual..............................................................4
What’s in the box...............................................................4
Introduction.......................................................................4
WARNINGS.........................................................................4
3. Using the DX816......................................16
3.1 Introduction..................................................16
3.1.1 Quick checking.........................................................16
3.2 Hybrid & TELCO.............................................17
1. Overview...................................................5
1.1 Inputs..............................................................5
1.2 Outputs...........................................................5
1.3 Monitoring......................................................5
1.4 GPIO...............................................................6
1.5 ETM – VCA faders............................................6
2. Set up........................................................6
2.1 Overview.........................................................6
2.1.1 About the use of RJ45................................................6
2.2 Power source..................................................7
2.3 Inputs..............................................................7
2.3.1 Line inputs.................................................................7
2.3.2 USB INPUTS...............................................................7
2.3.3 MICROPHONES INPUTS.............................................8
2.4 Audio outputs.................................................8
2.4.1 PROGRAM AND RECORDING.....................................9
2.4.2 USB audio sends........................................................9
2.5 Monitoring......................................................9
2.5.1 Control Room monitoring..........................................9
2.5.2 Studio monitoring......................................................9
2.5.3 Tally light..................................................................10
2.6 Connecting standard lines.............................10
2.6.1 Rejection factor (Null)..............................................10
2.6.2 CONNECTING A CELL PHONE...................................10
2.6.2.1 Re-connect a paired phone.............................................11
2.6.2.2 Set up the level...............................................................11
2.6.2.3 Turn off Bluetooth at the console...................................11
2.6.3 External Hybrid........................................................11
2.7 GPIO..............................................................11
2.8 Models DX816/AoIP......................................12
3.2.1 Using the TELECOM channel....................................17
3.2.1.1 Case A: A DJ or Talent answer the calling of the audience
..........................................................................................17
3.2.1.2 Case B: The producers team or telephonist answer the
calls...................................................................................17
3.2.2 Return to phone line................................................18
3.2.3 'PGM/REC'...............................................................19
3.2.4 Using with cell phone..............................................19
3.2.4.1 INCOMING CALLS............................................................19
3.2.4.2 END THE CALL.................................................................19
3.2.4.3 Resume a call on the cell phone.....................................19
3.2.4.4 Make a call from cell phone............................................20
3.2.5 Null factor................................................................20
3.2.6 Vox-IP communication (Skype)................................20
3.2.6.1 Connection via Skype, or similar, with a remote journalist
..........................................................................................20
3.2.6.2 Make a conference between Skype (or similar), land lines
and cell phone...................................................................21
3.3 Monitoring panel..........................................21
3.3.1 Loudspeakers monitors and headphones................22
3.3.2 Previous listening (CUE)...........................................22
3.3.3 Talk-back..................................................................22
3.4 Microphones channels..................................23
3.4.1 Features...................................................................23
3.4.2 Processing................................................................24
3.5 Line channels.................................................24
3.6 Recordings....................................................25
3.6.1 USB recordings........................................................25
3.6.2 Recording callings....................................................25
4. Solidyne HD3 & HD5 monitoring docks....26
4.1 Features........................................................26
4.2 Solidyne HD3.................................................26
4.3 Using the monitoring docks...........................26
4.3 Using the monitoring docks...........................26
2.8.1 Studio to Transmitter Link........................................12
2.8.1.1 IP configuration...............................................................12
2.8.1.2 Set the destiny IP............................................................12
2.8.1.3 Audio options..................................................................13
2.8.3 Using a digital microwave link..................................13
2.8.4 Receive AoIP with the console.................................13
2.8.5 Receive AoIP with a computer.................................13
2.9 Connections..................................................14
2.10 Grounding connection diagram...................15
SOLIDYNE
5. Maintenance...........................................27
5.1 How to get a long life of the console..........................27
5.2 Preventive Maintenance.............................................27
5.3 Spare parts.................................................................27
5.4 Service Manual...........................................................27
6. Technical specifications............................28
DX·816 - Broadcast mixing consoles
Page 3
About this manual
Introduction
Welcome to DX816 User Manual!
REVISION 16.08, August 2016
What’s in the box
Inside the packaging you receive the following items:

1 power supply.
User’s manual
1 guaranty agreement
1 tubular connector (2,5 mm) for Tally Light.
4 self-adhesive rubber pads.

OPTIONAL: Wiring kit for MNGX816.




Solidyne DX816 console is a compact, solid and elegant unit; with a great flexibility. It includes USB digital I/O which brings digital link with the computer;
avoiding the use of soundcards with the computer. In
option, it can include up to two AoIP interfaces for
PGM a REC.
D-816 has eight professional 100mm “feather touch”
conductive ceramic faders with ETM-VCA control that
offers a life utility of 10 millions of operations.
When unpacking the unit; please check the contents to
verify that the console has not received blows during
the shipment.
The DX-816 is a grat solution for small and medium
radio station; and for small recording studios for big
bradcasters.
To take full advantage of all the features of the console, we recommend to read carefully this user manual.
WARNINGS
AC
Voltage
This unit operates with an external switching
power supply 110/240VCA.
OUTPUT 28 VDC
MAKE SURE OF THE ELECTRICAL INSTALLATION
HAVE A GOOD GROUNDING. USE THE GND COPPER
BORN TO CONNECT THE DX816 TO GROUNDING
The exclamation point within a triangle shown in this manual alert the user to the presence of important instructions
on the operation and maintenance of the unit.

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The icon "pencil" appearing in this manual indicates the
presence of an important note with information, suggestions and/or examples of use.
DX·816 - Broadcast mixing consoles
SOLIDYNE
1. Overview
1.1 Inputs
1.2 Outputs
The Solidyne DX816 has 5 microphone inputs. Inputs MIC-1 to MIC-3 has 48V phantom power. Using dual pre-amplifiers and audio compressors
DX816 can manage 5 MIC channels on 3 faders.
The Channel-2 manages MIC-2 and MIC-4 simultaneously, and the Channel-3 manages MIC-3 and
MIC-5.
The mixer Solidyne DX-816 has two main outputs:
PGM (program) and REC (recordings).
4 bands EQ and compressor/limiter of automatic
action are available for the microphone channels.
The action of dynamic compression compensates
differences of level when two MICs are used on a
same channel.
4 line channels allow to connect up to 8 audio
sources. The channels 4 and 5 have A/B switch to select between two sources (balanced and unbalanced
inputs), and can receive incoming streaming from
the optional AoIP modules (only models
DX816/AoIP).
The USB connections of the Channels 6 and 7
sends to the computer the signals PGM and REC
respectively. The computer will recognize to the
channels 6 and 7 as USB recording devices.
In option, DX816 can have up to two AoIP modules, to send PGM and REC and reception of two
incoming streaming on an Ethernet. This allows
the connection of DX-816 with the transmitter
plant, or with another Studios.
The outputs are:

The channels 6 and 7 are digital with direct USB connection to the computer; plus aux inputs with 1/8”
switched TRS.
PGM balanced. The output PROGRAM is
the main output, used for broadcast the
audio to the audience (transmitter,
streaming server, etc.).

REC balanced. Used for recordings.

The channel ‘Telecom’ manages 2 POTS (land lines)
and one cell phone linked by Blue-tooth. Three
calls can be on-the-air in conference. The use of
Telecom channel is easy and very intuitive. In addi tion, DX-816 has a dedicated connection for exter nal hybrids.
REC-USB. The REC signal is also available
on USB (when channel USB-7 is plugged).
Usually used for recordings.

PGM-USB. The PGM signal is also available on USB. It can be used to sent the signal to Internet streaming.

AoIP: In models with the AoIP option, the signals PGM and REC can be sent through Ethernet, to STL link or interconnection between studios.
The models with the option AoIP can receive up to
two incoming streaming via Ethernet, which are
mixed to PGM and REC buses.
The available channels are:

5 microphone inputs. Over three microphone channels. Channel 2 manages the
inputs MIC-2 and MIC-4. Channel 3 manages MIC-3 and MIC-5.

2 USB (channels 6 and 7).

2 balanced inputs (channels 4 and 5).

2 POTS

1 cell phone (Bluetooth)

I/O for external hybrid. The signal is
routed to Channel 8 (Telecom).

1.3 Monitoring
The section “Monitor” have the controls to route
the signals to the loudspeakers and headphones of
the Studio and the Control Room.
Opcionalmente, recepción de dos flujos
de audio vía AoIP.
SOLIDYNE
DX-816 has send & return I/O for external hybrid.
The audio from the external hybrid is routed
trough the “Telecom” channel, and operates in the
same way as the built-in hybrids (which continue
being operative). Land lines connected to DX-816
and the external hybrid will work in conference.
Here you can find the controls for previous listen ing (CUE), talk-back and Master MIC-on. The talkback microphone shares with the CUE circuit, to
talk privately from the hybrid with calls.
DX·816 - Broadcast mixing consoles
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Using the controls located in the section ·Studio
Monitor· the operator selects the source of signal
to be listened into the Studio (ON-AIR, PGM, REC
or CUE). The mixer sends CUE signals to the headphones and loudspeakers monitors at the studio.
Into the Studio, a headphone amplifier (optional
item Solidyne HD3 & HD5) is in charge of manage
the signals of the loudspeakers monitors and
headphones (see 2.5.1 – Monitoring into the Studio and 4.- Monitoring dock Solidyne HD3 & HD5).
The knobs at the “Control Room” section manages
the levels for the headphones and loudspeakers.
The switcher allows to select the audio source:
ON-AIR (input for external tuner), PGM, REC or
CUE.
CUE: The circuit CUE allows to listen the signal previous to the main fader (PFL). The signal CUE can
be send to the Studio. At the Control Room, the
operator can listen CUE on speakers or by headphones.
The output Tally Light gives 12 VDC when the Master MIC-on button is on. In addition, the console
has an on-board tally light (see 2.5.3 – Tally Light).
1.4 GPIO
DX816 allows starting remote devices when certain
channels are on-air (MIC-1; MIC-2; MIC-3; LINE 6 and
LINE 7). It allows to command, for example, the onair playout software; digital audio processors (like
Solidyne APC 542); old CD/DAT/Minidisc players or
others specific peripherals like the video switcher
Solidyne SmartCam.
Models DX816/AoIP uses Ethernet to send the signal “MICs on air” to the audio processor, in order
to switch the audio processing preset to a voice
profile.
1.5 ETM – VCA faders
DX-816’s faders are the new “feather touch” with the
technique of control ETM-VCA (Electrometric Voltage
Controlled Amplifier). The faders DO NOT manage
audio signals. The variation of the level is made by
means of amplifiers of low noise and great stability.
The main faders only handle control signals that
modify the gain of the electronic amplifiers. For
more information please visit our WEB site.
The main advantages of this technology are:

Eliminates the noisy signals due to dirty
faders.

Eliminates the maintenance and improves
the life of faders.

Gives a perfect stereo tracking (less than
0,1 dB error) between Left and Right channels.

Allows using Conductive Ceramic faders of
ten million guaranteed operations.
2. Set up
2.1 Overview
Installation of Solidyne audio console doesn’t present
particular problems. However, keep in mind the basic
rules for all professional audio installations.
Do not connect the shielding of the audio wires
with the general ground of the electrical installation. The console provides this union through a
grounding terminal. See "2.3.4 - General diagram
for grounding".
2.1.1 About the use of RJ45
The consoles come with their inputs and outputs with
RJ45 connectors and are wired using multipair
shielded cable CAT-5. With the advent of audio over IP
(AoIP) many manufacturers started using RJ45 connectors and shielded multipair cable to replace differPage 6
ent audio connectors, to standardize the entire installation with a single type of connector and a unique
type of cable.
Additionally, the use of structured cable for connection between remote devices facilitates the installation anywhere in the world, due to availability of components and assembly tools used for data networks.
The multipair cable end that connects to the audio device (microphones, speakers, playback devices) still require standard audio connectors. For this reason, the
RJ45 cable provides termination sections with RJ-45
female at one end and a standard audio connector according the needs at the other end.
All balanced inputs of DX816 uses RJ45 connectors
and shielded twisted pair cables CAT5 (STP). The
wiring kit Solidyne MNGX816 includes all cables, making easy the installation.
DX·816 - Broadcast mixing consoles
SOLIDYNE
2.3.1 Line inputs
Figure 1: RJ-45-to-audio patch cords
All RJ45 input/outpus are full compatible with StudioHub (http://www.studiohub.com/).
2.2 Power source
The Solidyne DX816 has several inputs. Inputs ‘BALLINE’ are simetrycal balanced. Inputs “LINE” are unbalanced. Inputs DIG are USB. The channels 4 and 5
gives duplicated inputs: balanced and unbalanced
[16] and are switched from the frontal panel. The
channels 6 and 7 have unbalanced aux inputs [18]
with switched 1/8” TRS. USB audio signal disconnects when aux TRS is plugged.
The balanced inputs uses shielded RJ45 connectors.
The wiring requires shielded twisted pair CAT5. In
option, you can acquire the kit connection which include all cables needed for installation of the mixer
console.
The following table shows the RJ45 pinout for balanced I/O:
RJ45 NOMENCLATURE
RJ-45
Figure 2: rear panel: power source
At the left side of the rear panel you find the connector for the power supply [1]. The switching power
supply (provided with the unit) works with any AC
network (90-240 VAC) and support great variations
of voltage. Gives regulated 28 VCC
IS HIGHLY RECOMMENDED TO USE ALWAYS
THE ORIGINAL POWER SUPPLY
The grounding made through a bronze tip located in
the rear panel that provides the ground connection
to the chassis. Use cable of 2mm to a good buried
cooper bar.
2.3 Inputs
PIN
CABLE COLOR
1
2
3
4
5
6
7
8
Orange / White
Orange
Green / White
Blue
Blue / White
Green
Brown / White
Broen
Table 1 – nomenclature RJ45
BALANCED INPUTS/OUTPUTS
PIN
CABLE COLOR
1
2
3
4
5
6
7
8
Orange / White
Orange
Green / White
Blue
Blue / White
Green
Brown / White
Brown
Left channel (+)
Left channel (-)
Right channel(+)
GND
Reserved
Right channel (-)
-15 (optionally)
+15 (optionally)
Table 2 – balanced i/O RJ45
‘LINE' inputs are unbalanced with “RCA” connectors.
Equipment with outputs of -10 dBV @ 10 KOhms can
be connected (home type or semi-pro).
The GAIN control (channels 4 and 5) is common for
both inputs; for this reason, an adjustment of the
gain may be necessary when switch the input.
2.3.2 USB INPUTS
Figure 3: Inputs at rear panel
SOLIDYNE
Digital channels 6 and 7 [14] are for direct connection
to the computer, using USB ports and standard cables
USB A/B. Ports 1.1 or 2.0 are supported.
DX·816 - Broadcast mixing consoles
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Place the CPU next to the console in order to use cables of 2 to 3 meters of length. If needed, USB extension cables can be used; but it is recommended not to
exceed 4 meters of length.
VERY IMPORTANT

USB 7 CANNOT BE USED IF CHANNEL USB 6 IS NOT CONNECTED; since it is slave of channel 6. In order to use only
one USB channel always connect “DIGITAL 6”.

WHEN TWO PCs ARE CONNECTED; CONSIDER THAT CHANNEL 7 CANNOT BE USED IF THE COMPUTER CONNECTED
TO CHANNEL 6 IS POWER OFF. Usually channel 6 is used
with the air PC; which is 24 Hs operative.
Figure 4: USB A/B
Check the ground connection before connecting
the USB cables.
The channels must be connected to a computer running Windows©; starting by the Channel 6. When
connecting the channel to the PC, Windows© recognizes it and installs the correspondent drivers. Additional drivers are not required. In case of only one
channel was needed; connect always the Channel 6.
USB channels appears in Windows© as “recording
device USB 1” and “recording device USB-2”. In the
console; the display indicator “Digital In/Out” will
show “U4”, indicating that stereo input and output
of USB channel was recognized. When connecting
the channel 7 the indicator will change to “U8”;
and will appear in the computer a secondary playing and recording device (USB-2). Both USB channels can be connected to the same PC or to different computers (please see “Very Important” note
at next).
Check the playing and recording devices at “Control Panel>Audio and sound Devices>Audio”. In
this window you can define the preferred (default)
devices for Windows. This is simple since the devices are selected from a drop-down menu.
USB devices must be configured in the playout/onair assistant software and in editing and others
software that are in use. If the computer does not
have installed another soundcards, default playing
and recording device will be USB-1 (Channel 6).
2.3.3 MICROPHONES INPUTS
Microphone inputs are electronically balanced, using
XLR connectors.
Although the mixer has 3 MIC faders, at the rear
panel you’ll find 5 XLR for MICs. This is because inputs MIC-4 and MIC-5 share the pre-amp with the inputs MIC-2 and MIC-3 respectively. This way manages
two inputs at the same time (Channel-2 maneges
MIC2/4 and Channel-3, MIC3/5). If two microphones
will be used on a same channel, they must be dynamic type and preferably of same brand and model.
Figure 5: Microphone inputs
The button “48V” at the front panel enables the
Phantom Power supply to the inputs MIC-1, MIC-2,
and MIC-3. Phantom power is not available on MIC-4
and MIC-5.
2.4 Audio outputs
ABOUT USB DETECTION
We recommend do not change the USB cable to other USB
ports, to avoid that Windows chance the order of USB devices.
Windows 7/8: Verify that the audio recording device was properly recognized. If Windows recognized it as "microphone device", the recordings will be mono (the same signal in both
channels). To correct this: Control Panel → Sound → Record
→ choose the USB device (shown as USB microphone) and
click [Properties]. Then select the tab "Advanced", display the
menu of formatting options and choose a format for stereo
recording (2 channels, 16 bits, 44100Hz).
Page 8
Figure 6: Rear panel: outputs, phone lines, AoIP
DX·816 - Broadcast mixing consoles
SOLIDYNE
2.4.1 PROGRAM AND RECORDING
2.5.2 Studio monitoring
The main output is PROGRAM (PGM) [4]. Is the mix
signal that will be emitted on-air. The PGM mix is
available in several ways:
STUDIO MONITOR OUT [7] gives signal to the Studio
Monitors using and RJ45 and allows to connect, with
a RJ45-RJ45 standard cable, the monitoring docks
Solidyne HD3 and HD5 (optional).
•
•
•
•
A RJ45 connector gives balanced PGM. Used to
carry out the analog signal to the audio processor
or to an STL. The audio processors Solidyne
362HD and 542APC comes with RJ45 balanced inputs, which simplifies the wiring.
The jack TRS gives unbalanced stereo PGM.
PGM is available via USB at the computer connected to Channel-6. A typical use is for Internet
streaming.
For more information, refers to “4.- Monitoring
docks Solidyne HD3 & HD5”
STUDIO MONITOR OUT
RJ-45
In models with the option AoIP, PGM is available
over Ethernet, in several formats (PCM, MP3).
The recording output (REC) is available in multiple
ways: balanced stereo on RJ45 [5]; unbalanced stereo
on TRS [6]; via USB Channel-7 and over Ethernet in
models with two AoIP modules.
NEVER USE MONO PLUG`S (TS) TO CONNECT
STEREO TRS OUTPUTS.
2.4.2 USB audio sends
#
SIGNAL
1
2
3
4
5
6
7
8
Headphones LEFT (+4 dBu)
Headphones RIGHT
GND
ON-AIR (+14 V)
Talck-back to Control Room
VDC + 14 V
Speakers LEFT (+4 dBu)
Speakers RIGHT
*Chassis = GND
The output STUDIO MONITOR OUT can be used with
any standard headphones mixer/amplifier and active
loudspeakers. The next diagram shows the available
signals at STUDIO MONITOR OUT and their connections.
The USB connection gives two sends to the computer that appears in Windows as “USB recording
devices”. Detection is automatic and additional
drivers are not required.
Channel-6 sends the program mix (PGM) and
Channel -7 sends the REC mix. Usually the signal
REC is used to direct recording while PGM can be
used to streaming over Internet (WEBCasting).
2.5 Monitoring
2.5.1 Control Room monitoring
The outputs CONTROL [11] gives connection to loudspeakers and headphones, using 1/8” TRS Jack plug.
The nominal level of the loudspeaker output is 0 dBu,
and was designed to work with active monitors.
There are independent knobs to adjust the level of the
speaker monitors and headphones; and independent
switcher to select the audio source.

Remember that studio monitors are muted when channels MIC-1 or MIC-2 are opened. Control Room speakers
are muted when the button Talkback is pressed.
The output CONTROL ROOM is muted when TalkBack
is pressed.
SOLIDYNE
Figure 7: Connection of loudspeakers and headphones
into the Studio using a standard headphone amplifier.
DX·816 - Broadcast mixing consoles
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nel 8 until the voice of the caller reaches
0VU in REC vumeter.
2.5.3 Tally light
Tally light output ([2] in Fig.2) gives 12V/150 mA (2
Solidyne on-air lights) when the Master MIC-on is
turned on. In addition, the console has a built-in
tally light.
THE OUTPUT “TALLY LIGHT” AUTOMATICALLY
DISCONNECTS IF THE CHARGE EXCEED 150 mA.
2.6 Connecting standard lines
The hybrid channel manages two land lines (POTS)
and one cell phone linked by Bluetooth.
On the rear panel there are four RJ11: Two for the
telephonic lines, and two for their associated telephones. The phone lines can be connected directly
to public central or to a private central (PBX). The
private central sometimes deteriorates the rejection
factor of the hybrid, reason why we recommend to
connect the console directly to the public central,
whenever it is possible.
The associate telephones (used generally by the
Production to answer the calls) are connected to
RJ11 labeles as “SET”.
The telephone lines internally are protected against
high voltage discharges, like non direct lighting, by
metallic oxide varistors (SIOV). The internal protection protect until 2.000 V. We recommend to use additionally external protection on POTS, grounded
with a cooper javelin buried 2 meters or more. IN
3.
Listening the voice of the local speaker in
REC, turn carefully the preset NULL until find
the point in which the sound quality is the
same that the obtained with channel 8 offair.
4.
This adjustment change for each phone line,
so if the line is changed, the adjustment
must be repeated.
2.6.2 CONNECTING A CELL PHONE
Any Bluetooth cell phone can be linked to Solidyne
DX816. While the phone can be up to 5 meters
away from the console, is recommended leave it
near to the console, but not over the console.
The procedure to link the phone to the console is
similar to that used for other Bluetooth devices.
When the cell phone pair to the console, creates a
link between the two devices, and the phone stores
the ID of the console. This operation is performed
only once (for each cell). Once the console and
phone are paired, the console automatically
connects to the phone when the Bluetooth link is
enabled on both devices.
DX816’s BLUETOOTH IS POWERED BY USB CONNECTION. (CHANNELS 6 or 7). IF NONE USB CHANNEL IS CONNECTED TO A COMPUTER, CONNECT
AN EXTERNAL USB POWER SOURCE TO ANY USB
CHANNEL IN ORDER TO FEED THE BLUETOOTH.
CASE OF LIGHTING, THE WARRANTY DOES NOT COVER DAMAGES. See “2.10 General ground diagram”.
Procedure:
ALTHOUGH THE CONSOLE HAS INTERNAL PROTECTION; IS VERY IMPORTANT PLACE EXTERNAL PROTECTION TO THE LINES 'POTS'.
IN CASE OF LIGHTING WARRANTY DOES NOT
COVER DAMAGES.
2.6.1 Rejection factor (Null)
This adjustment is only for LAND lines. The rejection
factor expresses the capacity of the hybrid to avoid
that the transmitted signal returns distorted to the
mixer. As greater this factor is, more “clean” will be
the sound of the local speaker on the air. In order
set the rejection, proceed as following:
1.
Assign the TELECOM channel to REC.
2.
Make a calling using the DX816’s Hybrid.
Someone into the Studio must dialog with
the caller. Increase the level of fader Chan-
Page 10

At the console: Make sure that the LED of
button CELL PHONE [3] is off. When Bluetooth
is on, the button CELL PHONE flash in blue
slowly (one flash every 2 seconds). In this
case, turn off Bluetooth [2] pressing and holding until the flashing button turn off.
DX·816 - Broadcast mixing consoles
SOLIDYNE

At the console, enable the “discovery” mode.
This mode only can be accessed if Bluettoth is
turned off. Being the Bluetooth turned off,
press and hold by 10 seconds the button
BLUETOOTH, until the LED fast blinks in bluered. It indicates that DX816 is in “Discovery”
mode, to be recognized by by the cell phone.

At the cell phone: start a search for a Bluetooth device. This procedure can vary according to the brand and model of cell phone.
Please refers to the correspondent users manual.


When the searching ends, look for the DX816
Bluetooth device, which will appear as Solidyne BTM641. If the cell phone ask for a password, enter 0000 and confirm (see the user’s
manual of the cell phone).
4. The ID of the Solidyne DX816 is now stored
in the cell phone. The devices are "paired".
You don’t need to repeat this operation while
using the same phone. The button now flash
slowly in blue (one flash every 2 seconds), indicating "Bluetooth active".
On some phones you need to "connect" the new
device found to stay active. In others, the new device is
enabled after being detected.
2.6.2.1 Re-connect a paired phone
To reconnect to the console a cell phone, proceed
as follow:
•
Turn on the Bluetooth on DX816 by pressing
"BLUETOOTH" until the button CELL PHONE
lights (5 secs aprox). The button will flash
slowly in blue.
•
Enable the Bluetooth at the cell phone. When
the cell phone notice that the connection has
been made you are ready to operate. When
you make or receive a call, the audio is routed
to the console.

In some phones the re-connection is not automatic. You
need to "connect" the new device found to stay active.
2.6.2.2 Set up the level
IMPORTANT: At the cell phone, Bluetooth volume
must be adjusted at maximum level in order to obtain a good reception and to sure the best signal to
noise ratio.
This adjusting must be done with a real calling using
Bluetooth.
The volume of the phone's speaker is not the same of
SOLIDYNE
Bluetooth device. If you change the phone's level without make a Bluetooth calling, you will only be changing
the volume for the phone's speaker, not for the Bluetooth. To change the level of Bluetooth, make a call using the console (or a hands free headset) and set the
Bluetooth level to the maximum, or one step below
the maximun. This setting is stored at the cell phone's
memory. If you use another cell phone with the console, you will need to set the Bluetooth level again.
2.6.2.3 Turn off Bluetooth at the console
To turn off Bluetooth, press and hold “BLUETOOTH”
until the button CELL PHONE stop flashing.
2.6.3 External Hybrid
The DX816 series has send and return for external
hybrid. “External Hybrid” [8] uses a female ¼” TRS
(Jack) that send signal (PGM) through the “tip” and
receives signal (return or input to console) through
the “ring”.
Figure 8: Cable for connect an external hybrid
DX816 output (Tip); Is the return from microphones
from the console and PGM to the phone lines. This is
a MIX-MINUS signal, and connects to the input “return to phone lines” at the external hybrid (audio input of the hybrid).
DX816 input (Ring); Is the input for the audio that incomes from the external hybrid. This signal is mixed
to PGM but not to MIX-MINUS signal. This input connects to the audio output of the external hybrid.
The audio from external hybrid is routed to TELCO
(Channel 8) The main FADER of Channel 8 works in
the same way that with the lines connected to the
built-in hybrid.
2.7 GPIO
The ‘GPIO’ outputs (General Purpose Output) allows to command external devices when certain
channels of the mixer are on-air. There are 5 channels that generates GPIO signals: MIC-1, MIC-2;
MIC-3 USB LIN-6 and LIN-7.
These outputs are "open collector", and works like
a switch: when the channel is off-air (fader closed
or PGM unassigned), the output present an open
circuit (high Z). When the channel is on-air, the output connects to GND, closing the circuit. GPIO can
manage up to + 24V/0,1A.
DX·816 - Broadcast mixing consoles
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GPIO use jack TRS 1/8” connectors, located at the
rear panel.
SLEEVE
GPIO MIC 1 & 2
MIC-1
TIP
MIC-2
SLEEVE
GPIO MIC-3
RING
TIP
SLEEVE
GPIO LIN 6 & 7
Once the IP is obtained, a green LED at the rear
panel (RJ45) stays blinking.
GND
RING
can also connect directly to a modem-router, since
usually it will assign an IP via DHCP.
If the console can not find a DHCP server, it will scans the network looking for a
free IP address (this can take a few minutes).
GND
MIC-3
NOT CONNECTED
GND
RING
LINE 6
TIP
LINE 7
Step 2
To know the IP that was assigned, the user needs to
run a software tool called “Discovery_AoIP”, available at:
solidynepro.com/DW/IP.exe
Table 3 – GPIO
The file IP.exe is a self-extracting ZIP. When the user runs this
file, a folder “Solidyne IP Discovery” creates on the HD. This
folder contains the apps and instructions needed to know the IP
address. Look for leame-readme.txt and follow the indications according the case.
2.8 Models DX816/AoIP
This models includes up to two AoIP modules. It
adds to the DX816/AoIP the capability of stream the
PGM signal (models with one AoIP) or PGM and REC
(models with double AoIP). The AoIP module allows:
Send
the PGM signal to another computer of
the network. This computer can decode the
streaming using any audio player software
with support for streaming (i.e. VLC Player).
Link
with another Solidyne AoIP console
(DX816/AoIP; Serie 2600 o D612).
Link
with the transmitter plant (STL). At the
transmitter plant a dedicated hardware receive the stream (Solidyne ADA102 or processors Solidyne 562dsp /IP or serie APC 542).
Step 3
Open a web browser (eg Firefox, Internet Explorer)
and enter the IP address announced by
“Discovery_AoIP”. The Control Panel of AoIP module
will appears.
2.8.1.2 Set the destiny IP
The screen STATUS indicates the IP port
configuration. By default the module is set as Studio
Encoder (option "Location" → 'Studio Encoder').
Step 4
To check the settings, access to "Configuration" and
choose "Basic settings".
2.8.1 Studio to Transmitter Link
In studies, the console DX816/AoIP works as
ENCODER, generating an audio streaming to
establish a unidirectional link (half-duplex) between
the Studio and the Transmitter Plant. At the
transmitter plant the streaming is decoded by a
dedicated hardware (i.e. Solidyne ADA102 or a
Solidyne audio processor with AoIP).
2.8.1.1 IP configuration
The DX816/AoIP setup options are available in an
embed web page. By default, the unit works with
"Dynamic IP". Connecting the console to a LAN, the
unit gets an IP address via DHCP (the router will assign an IP). The procedure is as follows:
Step 1
Connect the console to the network via a standard
cable. The network must have a router. DX816/AoIP
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
"Stream method" must be "Push (RTP)"

In the URL field defines the DNS name or IP
address, and the destination port to which the
console streaming broadcast.

Press "Apply" to confirm the settings.
The configurations listed below require knowledge in
network administration.
The destination IP address is the external address of
the network in the Transmitter Plant, where it is
connected the DECODER (static IP assigned by your
ISP). When the data packets reach the
router/firewall on the other end, must be re-directed
to the DECODER IP (eg 192.168.0.30).
DX·816 - Broadcast mixing consoles
SOLIDYNE
Since DX816/AoIP transmitt to a specific IP address
and port, at the transmitter plant all packets that
arrives at this specific address and port must be
forwarded to the DECODER, or a particular computer,
which will decode the stream as audio signal. To
identify which packets must be sent use port
forwarding.
This patch cord connects the analog output “AoIP
Output Option” (see [10], Figure.6 at “2.4 Audio outputs”) with the balanced input of Channel 4 or Channel 5.
For the case of models with two AoIP modules, the
output “AoIP Output Option” connects to both inputs
Channel 4 and Channel 5, using a special patch cord
RJ45 “Y” supplied by Solidyne.
2.8.1.3 Audio options
Step 5
Go to Config → Audio
2.8.5 Receive AoIP with a computer
Input source
Default is “Stereo line”. Don’t change it.
Format
Audio settings for the streaming. Default values are:
Format: PCM 16 bits stereo
to a balanced input using an external patch cord supplied with the unit (standard Ethernet RJ45 to RJ45).
Sample rate: 48 KHz
To receive the streaming from the DX816/AoIP using
a computer, use any playback software with support
to streams and RTP protocol (i.e. VLC Player
http://www.videolan.org/vlc/).
Example:
To start to play in VLC go to Media –> Open network
In URL enter: [protocol]://[sourceIP]:[port]
For example: RTP://0.0.0.0:3030
In where RTP is the protocol used by the Solidyne
DX816/AoIP; 0.0.0.0 means from any incoming IP and '3030' is
the port used. Remember to set the firewall to allow incoming streaming trough port 3030 (or the port that you use).
At the console, set the transmission to
PCM16@44.1KHz; or any MP3 mode (see 2.7.1.3 –
Audio settings).
PCM16 @ 48KHz generates a streaming of 1.6
Mbit/s.
2.8.3 Using a digital microwave link
A DX816/AoIP console connected at the studio to a
broadband Internet, can cover any distance from the
studios to the transmitter plant.
For short distances, a good solution is to use a pointto-point RF data link to carry out uncompressed audio
(PCM 16 bit/48 KHz). For this, install a microwave link
for 5.8 GHz (or 2.4 GHz in some countries) under the
standard 802.11.x. This band is available in all countries and does not require special authorization. It can
cover up to 27 miles if there are no obstacles between
the extremes. Encoded audio can be transported for
special applications that requires a bidirectional link.
NOTE: Some versions of VLC Player also supports the string
RTP://@:3030
For more details, please contact us at info@solidynepro.com.
2.8.4 Receive AoIP with the console
The console receives the streaming through the AoIP
module. The incoming streaming is decoded and sent
SOLIDYNE
DX·816 - Broadcast mixing consoles
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2.9 Connections
Page 14
DX·816 - Broadcast mixing consoles
SOLIDYNE
2.10 Grounding connection diagram
SOLIDYNE
DX·816 - Broadcast mixing consoles
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3. Using the DX816
3.1 Introduction
The console desktop presents several areas:





Input channels.
A telecommunication channel.
Monitoring and talk-back.
Previous listening (CUE)
Level indicators.
DX816/AoIP can have up to two Ethernet modules
(AoIP) for send/receive audio over IP (PGM and
REC). Each AoIP module can receive a streaming
which is routed to an input channel of the mixer.
The turret contains electronic LED’s VU-meters that
show the recording (REC) and program (PGM) level
(average level). A Dynamic Compression indicator
shows the gain reduction applied to the mic signal.
The console generates two output mixes:
•
•
PGM output sends audio to the transmitter plant, or is used to streaming.
REC output for recordings with independence of PGM signal.
The buttons PGM and REC assign each channel to
the outputs (PROGRAM and RECORDINGS).
The operator can listen an audio source before put
it on-air, by pressing the CUE button (PFL). CUE
hears on headphones and optionally, on the main
speakers of the Control Room.
To put on-the-air a LINE channel, assign it to bus
PGM and raise the fader. To put on-the-air a MIC
channel, assign it to bus PGM; raise the fader and
press the button MASTER MIC-on.
Microphone channels have a switch to turn on
the 48V phantom power source. The phantom
power enables for MIC-1, MIC-2 and MIC-3 (not
available for inputs MIC-4 and MIC-5).
Although the console has three MIC faders, the
rear panel presents five MIC inputs. The inputs
MIC-2 and MIC-3 have a second XLR connector
(MIC-4 and MIC-5 respectively) that shares its
preamplifier. Fader 2 and fader 3 can manage two
microphones at the same time. If two microphones will be used connected on a same channel, these microphones must be dynamic type
and of same brand and model.
The equalization is global for all microphones.
3.1.1 Quick checking
Next are described the basic procedures to verify
the console wiring. In order to check that all is
working well, please follows the next steps:
1. Choose a signal source, like a microphone,
a CD player, etc. According to the used
source, select in the channel the correspondent input (MIC-LINE or BAL-LIN).
This can be the first cause of error (there
is no signal because the mistaken input is
assigned).
2. Press CUE button in the channel in which
the signal is.
3. Open the CUE fader in the MONITOR SECTION. The audio will have listened in the
built-in loudspeaker.
On the air:
1. Send the channel to PGM, so that the signal is sent to the main output.
2. Open the main fader until reach 0 VU in
program VU-meter. The signal will be on
the air.
NOTICE
The gain knob must adjust so that the normal work
position of the main fader is -15 dB (gray zone). In
some countries (like England) the user prefers to
adjust the normal level with the fader at maximum.
Dynamic compression applies only for the MIC
channels.
Digital USB channels connects directly to the
computer, managing two stereo signals. In addition; USB connection send to the computer the
mixes PGM (channel 6) and REC (channel 7).
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DX·816 - Broadcast mixing consoles
SOLIDYNE
3.2.1.1 Case A: A DJ or Talent answer the calling of
3.2 Hybrid & TELCO
the audience
The mixer console DX816 has a telecommunication
channel that manages up to 3 phone lines (one is a
cell phone linked by Bluetooth).
1) The DJ/Talent can manage the incoming calls
unassisted. When a calling incomes, the button of that line blink with the ‘ring’ cadence.
2) To answer a call, press the correspondent
blinking button. The button will light in red.
For the case of cell phone, press the button
CELL PHONE [3] to answer.
3) If there are more than one line in red (waiting
in HOLD), when the fader is raised to on-air
zone all lines go on-air in conference.
4) When a call is answered, the TELECOM fader
[9] must be closed, in the position CUE [10].
In this condition, the caller remains hearing
the program mix (the audio that is on-air),
and the audio from the phone line sends to
the CUE bus.
5) To talk to the line(s), press and hold the button TALK [8]. While TALK is pressed the speakers of the Control Room remains muted, staying the monitoring on headphones.
6) The button TALK [8] is retained. With the
main fader in CUE position, the operator can
talk hands free. The caller listen on headphones (since the loudspeakers remains
muted to avoid feedback loops).
Figure 9: Channel ‘Telecom’
The Channel 8 (TELECOM) manages 2 land lines
(POTS) and 1 Bluetooth cell phone. The three lines
can talk to each other in conference mode. It’s also
possible put in conference a VoIP communication
(like Skype). VoIP callings are made using a computer connected to Channel-7 (USB). By pressing
the button VOX-IP [4], TELECOM channel sends to
the computer the return signal from the callings,
through bus REC.
3.2.1 Using the TELECOM channel
For the explanation, we define two modes of working:
A) A DJ or Talent that answer itself the callings
of the audience (small stations; also used
by many radio stations outside rush hour).
B) A producer/telephonist answer the calls.
7) If the main fader is into the zone labeled as
“HOLD”, the calling is HOLD waiting to be onair. The caller hears the PGM signal. In this
mode, the phone line is not send to CUE.
8) To put a calling on-air (or more callings in a
conference) raise the main fader [9] until
achieve the apropiate level on VU meters. All
lines that have the button pressed (red) will
be on-the-air.
9) To end a call first close the main fader and
then release the button of the line. For the
case of CELL PHONE [3] the call is transferred
to the cell phone, and can be re-taken by
pressing CELL PHONE once. To hang out the
cell phone, short touch the button BLUETOOTH [2].
3.2.1.2 Case B: The producers team or telephonist
answer the calls
1) In the Production Room there will be two
phones “Phone-1” and “Phone-2”, each one
SOLIDYNE
DX·816 - Broadcast mixing consoles
Page 17
for a phone line in the console; and the mobile phone.
2) When a calling is answered or made, Produc-
tion inform to the DX816’s operator in order
to he take the line, by pressing the correspondent button on the console. When the operator takes the line, the Production can hung
the phone.
3) All calling answered or generated from the
cell phone can be transferred to DX816’s operator using the cell phone. For make this, set
the Blue-tooth mode to “Headset” and advise
to the operator, who must press CELL PHONE
[3] to put the call in hold (the caller hear the
PGM signal, but is not on-air).
Note: If you needs to work with several call in hold
mode while a call is on-air (and that caller wait hear ing the on-air signal) you will need to add an external
hybrid. To this purpose the DX816 have a special input/output (see 2.2.8 – External Hybrid).
4) Being one or more phone line buttons
audio sent to the line is not cancelled, returns through hybrid and mixes to the direct signal (the vocie from studio).
Working with normal levels this effect is not noticeable;
but using high hybrid output level, the voices of the studio
can be distorted (by coloration).
A phone calling not always must achieve 0 VU to equal the
loudness of the voices from the studio. Have in mind that
the LF, that carries greater energy, is not present in the
telephone line, but there is in the voices at the studio. The
lows are those that produce greater deviation in VU METERS. Nevertheless, for the ear the loudness is defined by
the mid rage frequencies. So that if you note that VU Meter “peaks lower” with the telephone line that with the
voices from mics on the studio, this not necessarily means
that “it’s listened lower”. On the other hand, the audio
processor of the radio will be in charge to equal both signals, so you do not leave the VU deceives to you when mix
voices of the floor with telephone calls.
VERY IMPORTANT NOTE
Conference between land lines only are possible if both
lines are of the same public central. The lines can be connected to the same private telephonic central (be of 24 or
48 volts). The conference mode IS NOT POSSIBLE BETWEEN
DIFFERENT CENTRALS neither different IP converters.
pressed, (in red) press TALK to dialog with the
callers. When TALK is active, the speakers are
muted at the Control Room.
If the voice of the Studio Talent is colored when the hybris
is on-air, (sounds too much mid-lows or flanges); th erejection factor of the hybrid needs to be adjusted. See “3.2.5
Rejection factor”.
5) If the operator leave pressed the button TALK,
If the calling at CUE listen distorted, or with excessive ambience, the level of preset CUE LEVEL [7] is excessive. Atenuate this level until reach an optimal listening of the MICs at
the Studio.
can dialog in “hands free” mode with the
caller, and listen he on headphones (since
loudspeakers are muted to avoid feedback).
The level of the TALK MIC adjust from a preset
located next to the TALK microphone.
6) To put on-air a phone line, raise the main
fader TELECOM [9].
7) To hang out a line, first close the main fader
and then release the button of the line. For
the case of CELL PHONE [3] the call is transferred to the cell phone, and can be re-taken
by pressing CELL PHONE once. To hang out
the cell phone, short touch the button BLUETOOTH [2].
8) To return a calling to the Producction (i.e. to
take note about a listener) the Production
must pick up the phone and then the operator will release the correspondent button at
the console. If the line is the cell phone, disable the mode “hands free” at the cell phone
to resume the communication on the cell
phone.

The red LED of phone line buttons only lights with
active phone lines. If the line is not connected, the
LINE button not lights.
TAKE IN MIND
Please be careful with the on-air level of the callings. Due
to the analogical hybrids are not perfect, a brief amount of
Page 18
3.2.2 Return to phone line
Most of the existing telephone hybrids on the market today, were designed over 30 years ago for analogue telephone exchanges (PBX) Solidyne hybrids,
however, have been recently designed for private or
public telephone exchanges today, which are fully
digital. The new technology Hybrids are recognized
because they have no control of air return level to
phone line. This is because inside the hybrid Solidyne uses an audio processor for return signal that
includes AGC, peak limiter & audio signal filtering.
Therefore the return is automatically adjusted during the transmission and its level is the maximum
allowed by the modern digital telephone exchanges.
If you want to check the return level to phone line,
you must use a oscilloscope to be placed in parallel
with the telephone line and must verify that the
signal is 2 volts peak to peak.
Please note that above this level the return can produce problems that will cause intermodulation distortion in the audio signal that goes to air. So in
Solidyne hybrids we use a processed return channel, to avoid distortion at the on-air signal. There
DX·816 - Broadcast mixing consoles
SOLIDYNE
are hybrids manufacturers that maintain the return
control level as they did in the past. This allow operators to adjust "by hunch" this critic level. This
makes the voices of the reporters and interviewed
people distorted or with coloration.
In Solidyne obviously, we keep a high grade of excellence in the audio quality of the hybrid on-air
sound. And that quality do not depend on the oper ator settings. Note that the Solidyne Hybrid on- air
audio quality of the local journalists is ever perfect
and without any coloration.
To achieve this level of quality we use a narrowband return filter. Then the return signal is limited
to the band 400 – 2.200 Hz in order not to distort
the signal to the air. This narrow band intelligibility
remains high (due to processing) but occasionally
may seem to the remote people that it "has little
volume" because his band is narrow. This should
not worry because it is a subjective sensation that
does not affect the intelligibility of speech.
3.2.4.1 INCOMING CALLS
Next is detailed the use of a cell phone in permanent link to the console. In this condition, the procedure to put a calling on-the-air is similar to the
seen for land lines:
•
When a call incomes, the 'ringing' listen simultaneously on the cell phone and on
the CUE channel of the console (fader
TELECOM closed)
•
To answer from DX816, make a short
touch on the button “BLUETOOTH” (or
you can answer from the cell phone
screen).
Once the call is answer, the operator can talk with
the caller:
•
With the main fader closed (CUE zone) the
caller listens on CUE circuit. Under this
condition the “PGM” send to the cell
phone is muted.
So that the communication can be on air, the
switch PGM-REC must be at the position PGM.
Please see “3.6.1 - Recording of telephone lines”.
•
Press TALK [6] to dialog with the caller. It
will light in red. Press TALK again to end
the conversation.
IF YOU DO NOT HAVE AUDIO ON-AIR FROM THE
HYBRID; CHECK THE POSITION OF THE SWITH
“PGM-REC”. THIS MUST BE “PGM”
•
Move the main fader to the zone “HOLD”.
The caller will hear the PGM signal, but is
not on-air.
•
To put the calling on-air, raise the main
fader (TELECOM) until reach the appropriate level on VU meters.
3.2.3 'PGM/REC'
3.2.4 Using with cell phone
If the cell phone will be used with the mixer for first
time, the devices must be paired. To know this procedure refers to “2.6.2 – Connecting a cell phone”.
Once paired, the procedure used daily is very simple:
•
Make sure that the fader TELECOM [9] be
closed (CUE zone).
•
Turns on Bluetooth at the console, by pressing
and holding the button BLUETOOTH [2] (2 seconds approximately) and release it just when
the button CELL PHONE [3] lights. The button
CELL PHONE remains blinking in blue slowly to
indicate that the Bluetooth link is enabled.
•
Turns on Bluetooth at the cell phone. If the
cell phone was paired with the DX816, the link
will be established and in few seconds the
phone is linked with the mixer. In this condition, the incoming calls are transferred directly
to the DX816.
SOLIDYNE
NOTICE
Due to technical specificities of the digital communication
systems, when a conference involves lines and cell phone
or VoIP calling (Skype), the caller who is talking from the
land line can hear an echo of their own voice. This echo is
not on the air.
3.2.4.2 END THE CALL
Make a short touch on the button "BLUETOOTH"
[2]. Or hang out from from the own cell phone.
3.2.4.3 Resume a call on the cell phone
To resume the call on cell phone; using the phone
menu leave the mode "Headset" (or mode “Bluetooth”) to switch the phone to the "speaker" mode
(Speaker).
To return the call to the console, return to the
"Headset" mode. This operation differs in each cell
phone. Please consult the user’s manual of the mobile phone.
DX·816 - Broadcast mixing consoles
Page 19
Next shows a screen-shoot of a cell phone with Android, with Bluetooth mode enabled. The example
shows the "Headset" icon, which transfers the call
to Bluetooth device when it is power on; and return
it to the phone when Headset mode is off. Others
cell phones can display two buttons; a button with
dropdown options; or other combinations. Refer to
the cell phone user’s manual.
The calling can be done from cell phone without leave the
Bluetooth mode, using the console's talkback circuit.
• The ring tone and the voice of the caller listens on CUE cir-
cuit (main fader closed in zone CUE).
• To dialogue, use the button TALK [8] of TELECOM channel.
• To HOLD the call, move the main fader to the zone HOLD.
• To put the calling on-air, raise the main fader to on-air zone
•
To end the call, make a short tap on button “BLUETOOTH”; or hang-up from the cell phone.
3.2.5 Null factor
This adjustment is only for LAND lines. The rejection
factor expresses the capacity of the hybrid to avoid
that the transmitted signal returns distorted to the
console. If the rejection factor is not well adjusted, it
can produce coloration of the local voices from Studio
when a land line is on air. Please refer to “2.6.1 – Null
factor” to know how adjust the rejection factor.
3.2.6 Vox-IP communication (Skype)
Figure 10: Screen of SO Android in a smartphone
REMEMBER
3.2.4.4 Make a call from cell phone
•
•
In the cell phone, switch from mode "Bluetooth" to mode "Headset" as was explained in "3.2.2.3 - Resume a call on cell
phone."
Dial the number in the cell phone and call
(SEND).
•
To transfer the call to the console, return to
the Bluetooth mode on the cell phone (see
"3.2.2.3 – Resume a call on cell phone").
•
Move the main fader TELECOM [9] to the
zone HOLD. The cell phone receives the
program signal, but remains off-air.
•
•
NOTES
Page 20
Although the hybrid channel is not in charge of provides communications via Internet, we will explain
here the procedure for the communications using a
VoIP software (like Skype or similar).
To put the calling on the air, turn "AIR
LEVEL" to the correct volume.
To end the call from the console, short
touch the button "BLUETOOTH". The call
can also be ended from the mobile phone
screen.
USB 7 CANNOT BE USED IF CHANNEL USB 6 IS NOT CONNECTED; since USB 7 is slave of USB 6. Both channels can
be connected to the same computer.
WHEN TWO PCs ARE CONNECTED; CONSIDER THAT CHANNEL 7 CANNOT BE USED IF THE COMPUTER CONNECTED TO
CHANNEL 6 IS OFF. Usually channel 6 is used with the onmachine; which is operative 24 Hs.
3.2.6.1 Connection via Skype, or similar,
with a remote journalist
To make this, proceed:
a) Assign the microphones to PGM and REC.
b) In Channel 8, move the switch PGM-REC to
PGM.
Configure the VoIP software to use the audio devices
that correspond to the Channel 7 of DX816 (typically
USB-2)
Use the computer connected via USB to Channel 7 to
make a calling with Skype or a similar software.
During the call, the signal from the Studio microphones sends to the remote location via Skype (using
the bus REC). Note that when local journalists speaking, the VU meters on PGM and REC reacts at the
same time.
DX·816 - Broadcast mixing consoles
SOLIDYNE
The audio from remote journalist incomes to DX816
via USB. Raising the Channel 7 the Internet signal is
on the air, so the local speaker and remote caller are
communicated with each other on the air.
3.2.6.2 Make a conference between Skype (or
similar), land lines and cell phone
The Solidyne DX816 allows maximum flexibility to
generate a virtual forum between journalists and interviewees, very far apart. For this proceed as follows:
1. Keep the controls like previous description a)
& b).
2. At Channel 8 (TELECOM) move the switch
PGM-REC to PGM.
Once communication is established via Skype (or
similar) you will be in the previous situation. You may
receive or generate phone calls from landlines or a
cell phone. Under this conditions, the callers are sent
to the air as usual, raising the fader of Channel 8.
Now, turning on VocIP at TELECOM channel, a return
signal from the Hybrid sends to Skype (through the
REC bus). This will see reflected in the REC VU-meter,
since it will shows the TELECOM signal. This way everyone are in conference.
WARNING
DON'T SEND BACKGROUND MUSIC TO SKYPE. ONLY THE MICROPHONES MUST BE ASSIGNED TO REC BUS.
Communication via SKYPE has a priority system that attenuates the speaker when he is interrupted. This makes it impossible to send the background music in the return signal,
it will cause interruptions in the audio who's talking.
Due to technical specificities of the digital communication
systems, when a conference involves lines and cell phone
or VoIP calling (Skype), the caller who is talking from the
land line can hear an echo of their own voice. This echo is
not on the air.
3.3 Monitoring panel
[1] Source selection
for the monitoring
[3] Level of the Control
Room speakers
[5] Send CUE to Control
Room speakers
[2] Source selection
for the Control Room
[4] Level of the Control
Room headphones
[7] Talk-back
[6] CUE level for headphones
and speaker monitors
[9] Level of talk-back mic
[8] MIC PZM for Talk-Back
and telecommunications
[10] MASTER MIC-ON:
Turn on all mic channels.
Figure 11: – Monitoring and talk-back
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DX·816 - Broadcast mixing consoles
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3.3.1 Loudspeakers monitors and headphones
The monitoring section shows the following areas:

Studio Monitor: here selects the signal for
the headphones and loudspeakers of the
Studio.

Control Room Monitor: here selects the signal for the headphones and loudspeakers of
the Control Room.
The section STUDIO MONITOR offers 4 signal
sources: CUE, PGM, REC and ON-AIR [1]. The DX816
sends to the Studio signal with fixed level, to headphones and loudspeakers. To manage the signals
into the Studio, a headphones amplifier unit must
be added. Solidyne offers the modules HD3 and
HD5. HD5 manages up to 5 headphones with two
monitoring buses (double input). HD5 has an output to the Studio speakers monitors, on-air counter
and talk-back for communication to the Control
Room (refers to “4 – Monitoring modules Solidyne
HD3 & HD5”).
The section CONTROL ROOM MONITOR has knobs
for the volume of headphones [4] and loudspeakers
[3].

Using the own loudspeakers level’s control, set the
volume of the loudspeakers to a comfortable listening, leaving the knob SPEAKERS of DX816 at the
center position.
The switcher [2] allows to choose the signal that
will be listen at the Control Room.
The options are:
PGM to listen the signal sent on-air (the PGM output)
REC to listen the bus REC.
ON-AIR is for listen an external source, usually a
tuner to hear the transmission from the air. Take
in mind that the on-air signal is highly processed,
for this reason the monitoring of the PGM signal is
made from the air in the most cases.

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If the Studio to Transmitter Link or the audio processor have a noticeable latency, the tuned signal
can not be used to monitoring due to delays. In this
case, an additional 3-bands audio processor can be
used to generate a non-delayed processed PGM
signal, that will be used only for monitoring.
3.3.2 Previous listening (CUE)
Each channel has a button “CUE” that allows to listen
the signal present in that channel when is off-air. If
CUE is pressed in several channels, the signals are
mixed.
At the Control Room, the CUE signal hears in headphones, and optionally can be sent to the main monitors.
The knob CUE [6] defines the level of CUE on headphones and, if was assigned, on loudspeakers monitors. The listening level of CUE is exclusively managed
by this knob, and fully independent of the position of
the knobs “Headphones” and “Speakers”.
To listen the CUE at the main monitors of the Control
Room, press the button MIX [5]. The volume controls
only with the knob CUE (the knob “Speakers” do not
affect the CUE signal).

If the knob CUE [6] is closed, signal CUE is not listened although the knobs SPEAKERS [3] and HEADPHONES [4] be opened.
If the knobs SPEAKERS [3] and HEADPHONES [4] are
closed, CUE will be listened on headphones (and
speakers) if the knob CUE is enabled.
The bus CUE is monoaural.
NOTICE: The signal CUE will mix with the other singal assigned to the headphones (and speakers if
the button MIX is pressed). To listen CUE with detail, the operator can turn down the knob SPEAKERS
or HEADPHONES according the case. To listen only
the CUE signal, the operator can release the buttons PGM, REC and ON-AIR. We recommend to listen the signal on-air with a moderate volume and
adjust CUE with a higher level, in order that both
signals can differentiate.
3.3.3 Talk-back
The talk-back circuit allows the operator to dialog
with those who are inside the Studio. To make this,
the operator press the Talk-Back button. The Control Room monitors are muted, to avoid feedbacks.
The operator’s voice will be listened inside the Studio, by the left channel. The right channel stays with
the on-air signal, so that speakers and journalists do
not lose the on-air reference. At the same time talkback microphone will be listen on all studio headphones.
The operator can press CUE in a microphone channel to dialog with the Studio.

The level of the talk-back microphone is calibrated
at factory, and usually it is not necessary to change
it. If you need to change it, there is a preset called
“LEVEL” to make the adjustment.
DX·816 - Broadcast mixing consoles
SOLIDYNE
“Phantom 48V” is available on the inputs MIC-1; MIC2 and MIC-3, and enables/disables for the three input
at once.
3.4 Microphones channels
3.4.1 Features
The Solidyne DX816 has 3 mic channels, but allows to
connect up to 5 microphones at the rear panel (see
“2.2.2.3 – Microphone inputs”).
The GAIN presets must be settled in ordet to the main
fader works over the indication “OVL” (-30 dB).
The microphones has a global assignment to the
buses PGM and REC.
Preamp gain
48V Phantom Power Supply.
Is turned on/off for the inputs
MIC-1, MIC-2 and MIC-3
EQ ON/OFF
4-bands EQ. It affect to all
microphones at same time.
Microphone channels are
processed by a
limiter/compressor that start
to work when the signal
reachs +2VU. Compression
action shows on ‘MIC
Compressor’ LED indicator.
BUS assignment The MICs
can be assigned to PGM,
to REC or to both outputs.
CUE
OVELRLOAD ZONE
The preamp gain must be
adjusted in order to the main fader
works over this indication. If fader
works always over the OVL
indication, there are “RISK OF
OVERLOAD”
MAIN FADER. MIC
channels are turned on
with a MASTER MIC-ON
button, located at the
monitoring panel.
The appropriate operation
level is obtained when the
peaks reaches 0VU
SOLIDYNE
DX·816 - Broadcast mixing consoles
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3.4.2 Processing
EQ
The equalization settings are the same for all mic
channels. The equalizer can be turned on/off with
the button EQ. The equalization can be used to im prove the sound of the voices; boosting or attenuating certain frequencies. Next figure shows the
equalization curves.
Page 24
DX·816 - Broadcast mixing consoles
SOLIDYNE
These curves are designed to improve the quality of
the human voice. The ends of the spectrum are
shelving type, with 15 dB of action.
As brief reference we said that the knob LOW (or
bass) gives “body” and “weight” to the voices;
whereas the knob HIGH adds “presence” and usually improves the intelligibility.
The central frequencies have a bell-shaped curve
(peak EQ). Mid-bass is centered in 160 Hertz, where
usually the popping effect are higher, or there is excessive resonance in certain male voices.
The mid-high band is located around 5 KHz, because around this frequency usually appears the
problems with the “sss” (excessive emphasis with
the sibilants sounds, like “shhh”)
amplifier of variable gain. This method guarantees
very low distortion and eliminates the noise by dust
faders. Complete information about the new ceramic fader technology can be found at www.SolidynePro.com.
[2] Input selection.
In USB channels
the conmutation
between USB and
aux input take
place when aux
TRS is plugged.
Dynamic compression
The dynamic compression is applied only to micro- [3] BUS assignment
phone channels, to minimize differences of level between mikes. It starts to work when the peaks are
over +2VU. Below this threshold the signal is not
affected. DX816 has a 10:1 compression slope and
fast attack and recovery times. The indicator “MIC
COMPRESSOR” shows in dB the gain reduction applied to the signal.
[1] Input gain. It
affects both inputs
(BAL and LIN).
[4] CUE
[5] Normal work zone.
The fader around this
zone can produce a
level of 0VU
3.5 Line channels
The Solidyne DX816 has four stereo LINE channels.
Line channels have two stereo inputs. Channels 4 &
5 have balanced stereo inputs (RJ45 connector) and
unbalanced stereo inputs (RCA), commutable from
the frontal panel. Channels 6 and 7 have digital USB
inputs, and stereo unbalanced aux inputs with 1/8”
Jack TRS. When the jack is plugged, the channel
switch to aux input and the USB audio signal disconnects.
Line channels have gain adjustment that must be
settled to obtain 0VU with the fader working above
the OVL zone (the gray zone between -10 /-20 dB)
to avoid excessive amplification on preamps. NOTE:
please see “2.2.2.2 – Digital inputs/outputs” and
read carefully the note about the USB audio levels
in Windows©.
To put a channel on-air; assign the channel to PGM
and raise the fader. The apropiate level is obtained
when the peaks of the signal reaches 0VU.
Connections was detailed at “Chapter 2 – Installation and wiring”
[7] Overload
indicación.
To reach 0VU, the
fader must work over
this zone to avoid
excesive
amplification on
preamp.
[6] Main fader
3.6 Recordings
DX816 have two stereo output channels. The main
channel is Program (PGM) and is used for ON-AIR
signal. For recordings the bus REC is used. The user
can make recordings while, simultaneously, the console is on the air.
Main faders of all channels work with ETM-VCA
technology (Electrometric-Voltage Controlled Amplifier). The fader only manages DC, that controls an
SOLIDYNE
DX·816 - Broadcast mixing consoles
Page 25
3.6.1 USB recordings
The main output (PGM) and the recording output
(REC) are available in digital format, through connections USB. When USB connects, Windows© will
recognizes recording devices (Control Panel/Audio
and Sound Devices/Audio) “USB Recording device
USB 1” corresponds to channel-6 and gives the
PGM signal. “USB recording device USB 2” corresponds to Channel-7 and gives REC signal.
On the computer: configure the recording software
to use USB-2 as recording device.
At the console: route the channels that wants to
record to REC bus. The others channels remain assigned to PGM. Proceed as follows:
a) In Monitor Section assign the Control Room
monitors to the bus REC. To send REC to the
Studio, assign REC for Studio monitor.
b) Release PGM and assign to REC the channels
that wants to record (for example MIC-1 and
Line-4).
c) Meanwhile the radio still on air through, for
example, the channel 5 assigned to PGM
with a musical program.
Now start the recording on the PC. To enable a MIC,
remember to press the button Master MIC-ON. The
Page 26
recording level is visualized on the REC VUmeter of
the console and at the recording software. You cannot change the input level from software (Windows
Mixer).
DX816 RECORDING DEVICES DO NOT HAVE
GAIN CONTROL BY SOFTWARE
At the Studio the speaker can monitoring the signal
using headphones or at loudspeakers. When the
recording ends, it can be checked using the same
REC bus, routing to REC the channel in which the PC
playing. At this point; BE CAREFUL OF NOT PRODUCING A FEEDBACK LOOP IN THE COMPUTER. MAKE
SURE TO MUTE IN THE PC (FROM WINDOWS
MIXER) ALL SOURCES OF SIGNAL EXCEPT “WAVE”
AND “GAIN CONTROL” (MAIN).
When the work is finished, return all the controls to
the original position, to leave the console to the
normal way of operation.
3.6.2 Recording callings
The DX816 allows routing the TELECOM channel to
PGM or to REC. It allows to record calls while a mu sical program is on air. For make this, assign the
Channel-8 and a microphone to REC; and proceed
with the communication as was explained in “3.2 Hybrid & Telco”. Assign the monitoring to REC to listen to the comunication (see previous issue).
DX·816 - Broadcast mixing consoles
SOLIDYNE
4. Solidyne HD3 & HD5 monitoring docks
4.1 Features
4.3 Using the monitoring docks
The optional accessories Solidyne HD3 and HD5 are
compact docks that concentrates all connections
needed to the monitoring at the Studio.
About the headphones at the Studio
The dock HD5 can manage up to 5 headphones, and
HD3 supports up to 3 headphones.
The console DX816 gives a signal with fixed level to
the monitoring docks. The signal is switched from the
console (PGM, REC, ON-AIR o CUE).
About the speakers monitors at the Studio
The main features are:




Connection for up to 5 headphones in HD5 (3 in
HD3) with independent level knobs.
Double bus for monitoring from two sources.
The output “LOUDSPEAKERS” has their own level knob.
The console gives a signal with fixed level to the monitoring docks.The signal is switched from the console
(PGM, REC, ON-AIR or CUE).

Output for active speakers, with gain control.
Tally-light.
Using the own loudspeakers level’s control, set the
volume of the loudspeakers to a comfortable listening, leaving the knob SPEAKERS of DX816 at the
center position.

Talk-back into the Studio. Allows to talk with the operator at the Control Room.
About the INTERCOM in HD3/HD5

Timer/Clock (only in HD5)
The white button has double functions:

DX816 supports up to three HD3 or two HD5 docks,
connected in cascade.
4.2 Solidyne HD3
The monitoring dock Solidyne HD3 connects to the
DX816 using a standar STP (Shielded Twisted Pair) cable, with RJ45 at both ends (pin to pin). This cable is
provided by Solidyne. The cable connects the “Studio
monitor OUT” of DX816 (See Figure 6, [7]) with “Studio Monitor Input” at HD3.
1. When the microphones are off-air, press this
button to talk to the Control Room. HD3/HD5 has
a built-in microphone.
At Control Room, the operator listen to the
HD5/HD3 at the speakers. To answer, the operator uses the conventional talk-back circuit of
DX816 as was detailed “3.3.4 – Talk-back”
2. When the Studio is on-air, the white button
lights red, to indicate that the microphones are
on-air. Under this condition, the talk-back disables.

The preset located under the mic adjust the gain of the
dock’s microphone.
Counter/Clock (only for HD5)
To active speakers
To DX816 Studio Monitor Out
Secondary audio input
The headphones outputs uses Jacks TRS 1/4”. Headphones of 16 and 32 ohms can be mixed.
The output for active speakers uses Jack TRS 1/8”
(minijack).
The display shows the current time (when mics are
off-air) or the time lapsed on air (when microphones
are on air). The “counter mode” can be disabled;
quitting an internal jumper. Open the back cover of
the Studio Box and to retire the jumper. There is a
unique jumper available. This will always deactivate
the on-air lapsed time counter, being always the time
on display.
HD3 has two level knobs. The inputs headphones 2
and 3 shares the same knob.
SOLIDYNE
DX·816 - Broadcast mixing consoles
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5. Maintenance
In order to obtain great results with DX816 consoles,
we recommend to follow these steps.
5.1 How to get a long life of the console
Maintain the room clean and free of dust. The surface of the console can be cleaning using a very
smooth detergent (the kind used for painted walls)
and a fine cloth hardly humid. NEVER USE alcohol,
benzene or petroleum derivatives.
Take this rule: NO SMOKING at the control room. The
cigarette ashes are LETHAL for the faders and
switches. It affects, in addition, to other equipment
of the radio (CD players, microphones, etc.). By the
same reason, don't drink or eat near the console.
DX816 consoles use the new Conductive Ceramic
fader technology with more than ten million operation guarantee (usually 15 years of use). Please see
more information at www.solidynePRO.com
This faders do not need maintenance nor cleaning.
5.2 Preventive Maintenance
The DX816 console is manufactured using hi-tech integrated circuits and heavy-duty electronic components, that guarantee an excellent reliability and allows eliminating the routines of preventive maintenance.
5.3 Spare parts
All faders are assembled using wired connectors, and
they are mounted to the chassis with two screws, so
its replacement is simple.
Once outside, any module is easily repaired thanks
to that all the components are clearly identified in
the Service Manual (see 5.4). Usually we recommend
to acquire the complete module and to change it because its low cost does not justify to repair it.
5.4 Service Manual
Service manuals, with the electrical circuits and components layout, are sent by email to authorized Solidyne dealers and radio stations who subscribe a confidentiality agreement. This Agreement will be sent
by FAX to Solidyne (5411 4702-2375) in paper letterhead of the radio and signed by its Director or General Manager. The information is encrypted.
For details please visit www.SolidynePro.com Solidyne brings full support to technicians during the repair work. Please contact us at: info@solidynePRO.com
Usually DX816 console do not need special maintenance routines. Be sure the operator’s has a gentle
use of the console. Remember that the rear connectors are not designed for daily use; avoid connection
of headphones directly to console. When the operator’s changes frequently its headphones, use an external patch panel to avoid wearing console jacks
Page 28
DX·816 - Broadcast mixing consoles
SOLIDYNE
6. Technical specifications
NOISE
AUDIO INPUTS
5 balanced MIC inputs (XLR) [Fader1=MIC-1; Fader2=MIC-2+MIC-4;
Fader3=MIC-3+MIC-5)
2 balanced stereo line inputs (RJ-45)
4 unbalanced stereo line inputs (2 RCA - 2 TRS 1/8”)
1 external stereo input (TRS)
2 digital stereo inputs (USB)
MIC in, EIN=-120 dBu/150 ohms
LINE in, S/N > 75 dBA
DYNAMIC RANGE
From Linea to PGM >90 dBA
CROSSTALK
INPUT LEVELS / IMPEDANCE
PGM-REC > 70 dBA @ 1 kHz
MIC= -10 dBu/-75 dBu; 150/250 Ohms
Balanced lines = -20 dBu/+26 dBu; 600 ~10Kohms
Unbalanced lines = -15 dBu/+12 dBu; 600 ~10Kohms
DISTORTION
From LINEA to PGM < 0.03 % THD @30-15.000 Hz.
PHANTOM POWER SUPPLY
PHASE
48V ON MIC-1, MIC-2 and MIC-3
From line to PGM, < 3º L&R @50-10.000 Hz
ANALOG OUTPUTS
STEREO TRACKING
2 stereo outputs; PGM & REC, balanced +4 dBm;
Max level +28dBu (10K), +20dBm (600 Ohms)
External hybrid: unbalanced +4dBu
Error below 0.2 dB L/R in rage from 0 to 40 dB of fader
TELEPHONIC HYBRID
1 stereo output to Studio (RJ45). Level +4dBu for active loudspeakers.
Are muted with mics on air.
1 stereo output for Control Room (mini-jack). Level +4dBu for active
loudspeakers.
1 stereo output for Studio headphones (RJ45). Level +10 dBu
1 stereo output for Control Room headphones. +10 dBu
1 send for external hybrid (MIX-Minus) +4 dBu/10K
Active hybrid of 3 lines (2 land lines + cell phone by Bluetooth 4.0 whit
sampling at 16 KHz). Include a mini-PBX.
Frequency response: 300 - 3.400 Hz
Noise: > 60 dBA S/N
Rejection: > 40 dB - Rejection adjusts from the frontal panel
Priority system: 12 dB when the local speaker interrupts
Logic of automation: Audio & Logic are managed from a single 100mm
slide fader that performs all the operations in error-free mode:
CUE (closed fader) with “hands free” circuit
Hold with PGM return to the caller.
Onair: Level of the calling on the air.
CUE
PROTECTION AGAINS LIGHTING
OUTPUT LEVELS / DIGITAL OUT
Agrees with K-15 recommendation: 0VU = -15 dBFS
MONITORING OUTPUTS AND HYBRID
CUE bus (mono), switchable to loudspeakers and/or headphones of Control Room and Studio loudspeakers.
HEADROOM
TALK-BACK
22 dB @ LIN to PGM Ref + 4dBu/10 k
Included Talkback MIC, with Audio Limiter. Noise Canceled PZM type.
Outputs to Phone Line Hybrid or Studio Speakers & Headphones.
GPO
At MIC-1, MIC-2 & MIC-3
For lines 6 & 7
Open collector +24V @ 0,1 A
VU-METERS
4 electronic VU-meters por PGM & REC. Cuasi peak reading, with standard yellow VU scale. Microphone compressor indicator 0 - 15 dB
FREQUENCY RESPONSES
TALLY LIGHT
20-20.000 Hz +/- 0.5 dB (LIN to PGM)
ON-AIR signal output (turns on when MIC is open). Tubular connector
2.1 mm (internal pin). 12 V CC @ 0,15 amp (two Solidyne On-Air lights).
MIC EQs
4 bands. 80 Hz top flat curve, 160 Hz bell shaped, 6,3 KHz
bell shaped, 8 kHz top flat. Action +/- 15 dB
DYNAMIC COMPRESSOR
MIC compressor of low distortion, of automatic action. Threshold = 0VU. Atack < 10 ms. Ratio: < 2 dB variation for a increase of
15dB of the mic signal. 20 dB max compression
SOLIDYNE
Audio & Logic are managed from a single 100mm slide fader that performs all the operations in error-free mode (CUE, private hands free Talk
- Hold with Air return - Live On Air)
POWER SUPPLY
Tubular connector 1.8 mm (internal pin).
Switching external power supply 90-240 V, 20VA [28V@0,57A]
DIMENSIONS AND WEIGHT
Depth: 350 mm; Wide: 550 mm Height: 130 mm
Shipping weight: 8 Kg
Packaging (mm): 600 x 500 x 180
DX·816 - Broadcast mixing consoles
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