User manual | c a t a l o g u e

S2 Digital I/O Analogue
Radio Broadcast Mixer
June 2012
catalogue
Manufacturers of audio & video products
for radio & TV broadcasters
Radio Broadcast Mixing Consoles
S2
Digital I/O Analogue Radio Broadcast Mixer
Mixing Consoles - S2
S2 is a modular broadcast
mixer which offers digital
audio quality with analogue
reliability in a modular format.
S2 has both digital and analogue input channels, together
with simultaneous analogue and digital outputs.
Following on from the Sovereign range of audio mixers,
S2 combines all the features needed of a radio broadcast
mixer in a stylish, flush-mounting chassis : a wide range of
input and output channels, PFL/cue, fader-start operation
of equipment, automatic monitor muting on mic-live, light
controlling remote outputs, optional EQ on input modules,
gram amp input options and 2 main audio buses, allowing
you to broadcast on the PRG bus while recording on the
AUD bus, with bus output selection on each module.
Innovative Design
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width sections, allowing 5, 10, 15, 20, 25
and 30 module width mixers. This means
S2 can be used for small newsrooms or
large on-air situations.
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channels means that the mixer can
be maintained simply and quickly.
Hot-swappable input channels can be
individually removed and repaired whilst
still on-air.
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varied and set for best viewing position.
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that customising the mixer for your own
purposes is easy.
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the status of the mixer at all times.
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connections but can be simply unclipped
and reclipped for maintenance.
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the flexibility to expand it at a later date.
You can even add another S2 mixer
and link them together with a bus
connector cable to allow for split
desk configurations.
Superb Audio Quality and Unquestionable Reliability
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semiconductor technology to allow input
and output of digital audio signals up to
24 bit, 96kHz sample rate.
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noise circuitry to provide superb audio
performance well capable of satisfying
radio listeners worldwide.
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minimises the chance of failure, avoiding
lost air-time. Each module is individually
checked twice before being assembled
into the finished chassis and the whole
unit is tested before shipping.
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smooth, repeatable response and the XLR
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Neutrik connectors used are an industry
standard.
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faders ensures tight stereo tracking
and eliminates mechanical and
electronic noise.
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providing regulated, ripple-free power
to the mixer. There is also an optional
switcher to control 2 power supplies
providing redundancy.
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chassis and screws to prevent corrosion in
high humidity environments.
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provide exceptional EMC screening.
Radio Broadcast Mixer Using S2-25 Chassis and Script Space.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
There is a wide choice of
input channels for the S2
mixer. Each channel has a
number of common features :
Changing the Input Level - Coarse gain is set
using pre-set potentiometers on the channel
circuit board which allow unbalanced inputs
to be used on mono and stereo line inputs.
The front panel TRIM control allows fine gain
of ±12dB.
Changing the Signal Pan, or Balance - The
BAL/PAN control is used on mono channels to
pan the mono input signal in the stereo image
and on stereo channels to balance the stereo
Programmable Button Settings
image.
To make the S2 modules as flexible as
CUE/PFL (Pre Fade Listen) - Selecting the
possible, every button on each channel can
CUE/PFL button routes the pre-fader input
be set to a number of different modes to
signal to the monitoring system where the
aid the use of the mixer and allow for extra
signal can be heard via headphones and/
functionality. Each button can be set to either
or loudspeakers. The button lights green
operate manually, be permanently on, or
when CUE/PFL is active and a jumper option
permanently disabled. Also, the ON button X
S2-CMM
Mic/Mic Channel
The mic/mic input channel is a dual mono
microphone input with a button switch to
select either Mic 1 or Mic 2.
Each Mic input has jumper settable phantom
power available at +48V and a high pass filter
to remove low frequency rumbles. When
enabled, the LF response of the microphone
is rolled off at 125kHz, 6dB per octave. If the
Mic input is used for the presenter’s mic it can
also become the talkback mic.
Equalisation is fitted as standard on this
channel and is enabled by the EQ button,
providing 10dB cut and boost at HF (6.5kHz)
and LF (100Hz).
The BAL/PAN control operates as follows : Full
anti-clockwise pans the signal to the left and
increases the signal by 3dB (right channel
reduces by 70dB); full clockwise pans the
signal to the right and increases the signal by
3dB (left channel reduces by 70dB).
A balanced line level insert send and
return is available for the Mic input.
This is useful for hooking up an outboard
effects unit to be used with the
microphone.
There are logic remote input controls for
Mic Cough muting and Reverse Talkback,
together with two separate output controls
for Mic Cue lights, which can be momentary
or latching.
The remote outputs on the 9 way D-type
plug are fed from NPN opto-isolators.
Both Mic inputs have a jumper selectable
output to facilitate either Control Room
speaker or Studio speaker muting and the
channel can also be used to control either
one of two separate timer displays.
Gold plated Neutrik XLR connectors are
used for the audio inputs and outputs.
S2-CMM Mic/Mic Channel and Rear.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Input Channels
Assigning an Input Channel to an Output
Bus - Switches at the top of the channel are
used to select the output group routing, to
either Program, Audition, or both output
buses. Selecting the PGM and/or AUD buttons
routes the channel audio to
the PGM and/or AUD mix buses. The buttons
illuminate green to indicate the routing status.
is available to cancel the CUE/PFL selection X can be configured to operate in a number of
modes, altering remote start functions, and
when the fader is raised. This button works
the channel ON function can be controlled
with both a momentary and latched
remotely by automation playout systems,
operation - if held down, the selection is
cancelled on release, otherwise the button is such as RCS® or VCS.
alternate action.
Scribble Pad - A scribble pad is provided at
the bottom of the channel for user labelling
Fader Start & ON Button Control - The
of the channel function.
ON button works in conjunction with the
100mm long-throw carbon fader and is used
to control channel remotes (e.g. starting a
CD player), routing and timers, etc. When
RCS® is a registered trademark
of Radio Computer Systems Inc.
unlit, the channel is off. Flashing red indicates
VCS is a wholly-owned
that the channel has been selected to ON
subsidiary of SciSys plc.
but not routed to either PGM or AUD. Steady
red indicates that the channel is ON and
“armed”, ready for the fader to be raised.
Raising the fader changes the illumination
to green indicating that the channel is live.
Alternatively, with the button unlit the
fader may be raised and the channel can
be operated simply by selecting ON. The
illumination in this case toggles between
unlit (channel OFF) and green (channel ON).
Radio Broadcast Mixing Consoles
S2-CML
Mic/Line Channel
The mic/line input channel is a mono input
with a button switch to select either Mic or
Mono Line.
In addition the Line input can be configured
with all the features of the Mic input
when used as a Mic input with an external
microphone amplifier, e.g. for monitor
muting purposes.
For the Mic input, phantom power at +48V
can be configured. The Mic input has a
jumper selectable high pass filter to remove
low frequency rumbles.
Gold plated Neutrik XLR connectors are
used for the audio inputs and outputs.
“
The ON button works in
conjunction with the 100mm longthrow carbon fader and is used
to control channel remotes (e.g.
starting a CD player), routing and
timers, etc. When unlit, the channel
is off. Flashing red indicates that
the channel has been selected to
ON but not routed to either PGM or
AUD. Steady red indicates that the
channel is ON and “armed”, ready
for the fader to be raised. Raising the
fader changes the illumination to
green indicating that the channel is
live. Alternatively, with the button
unlit the fader may be raised and the
channel can be operated simply by
selecting ON. The illumination in this
case toggles between unlit (channel
OFF) and green (channel ON).
Equalisation is fitted as standard on this
channel and is enabled by the EQ button,
providing 10dB cut and boost at HF (6.5kHz)
and LF (100Hz).
A balanced line level insert send and return
is available for the Mic input for the insertion
of an effects, or voice, processor into the mic
channel. The send and return is disabled in
Line mode.
There are logic remote input controls for
Mic Cough muting and Reverse Talkback.
There are output controls for Mic Cue lights
and separate line remote start/stop controls
by fader or ON button. Both latching and
momentary contacts are catered for.
The remote outputs on the 9 way D-type
plug are fed from NPN opto-isolators.
“
The Mic input provides a jumper selectable
output to facilitate either Control Room
speaker or Studio speaker muting and the
channel can also be used to control either
one of two separate timer displays.
48v
Mic
Line
Mic 2
Mic
Gain
Insert
Line
48v
Line
Trim
VCA
Trim
Routing
EQ
HF/LF
EQ
PAN
PFL
To left
Pgm output
To right
Pgm output
VCA
Inse RT
Send
Fader
CPU
To timer
Bus
Inse RT
Return
Mic cue light
Cough/rev t/b
PGM AUD PFL C/FEED T/B
L R L R L R 1 2 1 2
Mutes
Mixing Consoles - S2 Input Channels
If the Mic input is used for the presenter’s
mic it can also become the talkback mic. The
talkback function will be retained when the
channel input is switched to Line.
PGM
Line remotes
T/b enable
Aud
Mic
Line
EQ
Cue
PFL
ON
To meter
Select
S2-CMM Mic/Mic Channel and S2-CML Mic/Line Channel.
S2-CML Mic/Line Channel
and Rear.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
S2-CS
S2-CSE
Dual Stereo Line Channel
Dual Stereo Line Channel with EQ
The S2-CS dual stereo line channel has two
balanced stereo inputs on Neutrik
XLR connectors.
The INP 1/INP 2 button selects which input
is routed through the channel. The button
is illuminated in red to indicate when Input
2 is selected. The operation of the button is
inhibited when the channel is “live”.
Continuous momentary start can be
enabled such that when the fader is up
and the channel is on, each press of the ON
button triggers a momentary start.
Two remote pins can also be configured
for general use as either inputs, outputs,
latching, or momentary and active high
or low. Uses for this include channel live
indication or specific channel function
remote control. X
S2-CSG
S2-CSGE
The S2-CSE channel is the dual stereo
line channel as above but fitted with
equalisation, providing 10dB cut and
boost at HF (6.5kHz) and LF (100Hz).
The EQ button places the equalisation
in and out of the signal path. The button
is illuminated in yellow when the EQ is
active.
The channel can be used to control either
one of two separate timer displays.
Stereo Line & Gram Channel
Stereo Line & Gram Channel with EQ
The S2-CSG channel is the dual stereo
line channel fitted with an RIAA input
amplifier on the second input. The
balanced stereo line input is on Neutrik
XLR connectors and the unbalanced RIAA
stereo input on phonos.
The channel is used for connecting a
turntable or record deck. The GRAM
inputs have RIAA equalisation suitable
for magnetic pick-up cartridges.
Selecting the LINE/GRAM button
switches the channel input between
Stereo Line and RIAA . The button is
illuminated in red to indicate when
Gram (RIAA) is selected. The operation
of the button is inhibited when the
channel is “live”.
S2-CS Dual Stereo Line Channel and S2-CSE Dual
Stereo Line Channel with EQ and Rear.
The 100mm VCA fader provides unity gain
when fully open. The channel input signal
is routed to the outputs whenever the
fader is open, the ON button is selected
and either or both of the routing buttons
are selected.
There are separate logic remote output
controls for both of the two inputs
providing start/stop functions by fader,
or ON button. Remotes, etc, are triggered
when the fader is up and the channel
ON button shows green. The start
function can be configured to be either
momentary (500mS) or latched for each
input. The remote outputs on the 9 way
D-type plug are fed from NPN opto-isolators.
Continuous momentary start can be
enabled such that when the fader is up
and the channel is on, each press of the
ON button triggers a momentary start.
Two remote pins can also be configured
for general use as either inputs, outputs,
latching, or momentary and active high
or low. Uses for this include channel live
indication or specific channel function
remote control.
The BAL/PAN control adjusts the stereo
balance in the following manner : Full anticlockwise shifts the signal to the left and
increases the signal by 6dB (right channel
reduces by 6dB); full clockwise shifts the
signal to the right and increases the signal
by 6dB (left channel reduces by 6dB).
The 100mm VCA fader provides unity gain
when fully open. The channel input signal is
routed to the outputs whenever the fader is
open, the ON button is selected and either
or both of the routing buttons are selected. X
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Input Channels
There are separate logic remote output
controls for both of the two inputs
providing start/stop functions by fader,
or ON button. Remotes, etc, are triggered
when the fader is up and the channel ON
button shows green. The start function
can be configured to be either momentary
(500mS) or latched for each input. The
remote outputs on the 9 way D-type plug
are fed from NPN opto-isolators.
X The BAL/PAN control adjusts the stereo
balance in the following manner : Full anticlockwise shifts the signal to the left and
increases the signal by 6dB (right channel
reduces by 6dB); full clockwise shifts the
signal to the right and increases the signal
by 6dB (left channel reduces by 6dB).
Radio Broadcast Mixing Consoles
X The S2-CSGE channel is the stereo line
& gram channel as above but fitted with
equalisation, providing 10dB cut and boost
at HF (6.5kHz) and LF (100Hz). The EQ
button places the equalisation in and out of
the signal path. The button is illuminated in
yellow when the EQ is active.
The channel can be used to control either
one of two separate timer displays.
S2-CDS
Digital Dual Stereo Channel
The digital dual stereo channel has two
24-bit 96kHz digital inputs with an INP 1/INP
2 button switch to select between them. The
button is illuminated in red to indicate when
Input 2 is selected. The operation of the
button is inhibited when the channel is “live”.
Mixing Consoles - S2 Input Channels
Either input can be configured to be
balanced AES/EBU on standard XLR, or S/
PDIF on phono sockets, selected by internal
jumpers.
An additional jumper option can be used to
decode emphasis when indicated by certain
status bits in the incoming data stream.
The digital signals are converted to
analogue and from this point the channel
functions are the same as the S2-CS Dual
Stereo Line channel with the addition that
when the ON button flashes green, it means
that there is no valid digital input.
“
Switches at the top of the channel
are used to select the output group
routing, to either Program, Audition,
or both output buses. Selecting the
PGM and/or AUD buttons routes the
channel audio to the PGM and/or
AUD mix buses.
“
S2-CDSE
Digital Dual Stereo
Channel with EQ
This channel is the digital dual stereo
channel as above but fitted with
equalisation.
The HF and LF controls are used to adjust
the equalisation of the signal. The HF
control boosts and cuts the signal by 10dB
at 6.5kHz. The LF control boosts and cuts
the signal by 10dB at 100Hz. The EQ button
places the equalisation in and out of the
signal path and is illuminated yellow when
the EQ is active.
S2-CSG Stereo Line & Gram Channel and S2-CSGE
Stereo Line & Gram Channel with EQ and Rear.
Both S2-CDS and S2-CDSE channels can be
used to control either one of two separate
timer displays.
S2-CDS Digital Dual Stereo Channel and S2-CDSE
Digital Dual Stereo Channel with EQ and Rear.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
6 Way Stereo Source Select Channel with EQ
The 6 way stereo line source select channel
has 6 balanced stereo inputs on a 25 way
D-type connector selectable by a 6 way
mechanical interlocking switch bank,
numbered 1 - 6. A depressed button
indicates the selected input.
The switch bank also controls 6 sets of
remote outputs allowing each source to
have a set of start/stop remotes. The remote
starts can be set as momentary or latching.
The HF and LF controls are used to adjust
the equalisation of the signal. The HF
control boosts and cuts the signal by 10dB
at 6.5kHz. The LF control boosts and cuts
the signal by 10dB at 100Hz. The EQ button
places the equalisation in and out of the
signal path and is illuminated yellow when
the EQ is active.
Continuous momentary start can also be
enabled such that when the fader is up
and the channel is on, each press of the ON
button triggers a momentary start.
The channel can be used to control either
one of two separate timer displays.
S2-CSMM
Stereo Mix Minus Channel
configured by jumper settings as a mono
sum of mix-minus on the left channel
and continuous talkback on the right
channel (for some ISDN codecs and
hybrid applications).
The stereo mix-minus channel has one
balanced stereo line level input and a
balanced stereo mix-minus output, on XLR
connectors. The channel is intended for
use where a remote stereo source, such as
another studio connected via ISDN, requires
a stereo cleanfeed return. The cleanfeed is
generated by the mix-minus method from
either the PGM or AUD outputs, depending
on the routing selection.
The fader, or ON button, control a logic
remote output function. The remote
function can be configured to be either
momentary or latched. The remote
outputs on the 9 way D-type plug are fed
from NPN opto-isolators.
Selecting the CUE/PFL & T/B button routes
the pre-fader input signal to the monitoring
system where the signal can be heard
via headphones and/or loudspeakers. In
addition, talkback is routed to the cleanfeed
output. This enables the presenter/technical
operator to communicate with the remote
source prior to going live to air. PFL can be
automatically disabled when the fader
is opened.
Continuous momentary start can be
enabled such that when the fader is up
and the channel is on, each press of the
ON button triggers a momentary start.
Two remote pins can also be configured
for general use as either inputs, outputs,
latching, or momentary and active high
or low. Uses for this include channel live
indication or specific channel function
remote control.
X
The outputs on this channel can be
Routing
Left
Trim
Input 1
Line Left
Right
Trim
Input 1
Line Right
EQ
LINE 1/2
HF/LF
EQ
A
Fader
1
3
2
B
AES/SPDIF
2
1
3
2
AES/SPDIF Input
Select
1
Aud
Inp 1
inp 2
EQ
C / Feed
Left
Null
C / Feed
Right
Null
Cue
PFL
On
From PGM
Output L
From PGM
Output R
D/A
3
Input 1
AES/EBU
Input 2
AES/EBU
Input 1 A
SPDIF B
Input 2
Input 1 remotes
Input 2 remotes
PFL
CPU
PGM
S2-C6SS 6 Way Stereo Source
S2-CSMM Stereo Mix Minus
Select Channel With EQ and Rear. Channel and Rear.
BAL
To S2-OMC &
S2-OMS CPU
VCA
Right
Trim
Input 2
Line Right
PGM AUD PFL C/FEED T/B
L R L R L R 1 2 1 2
VCA
Left
Trim
Input 2
Line Left
Input 2
RIAA
Option
TRIM
1
3
2
Digital Input Version
Stereo Mix-Minus Version
6 x Stereo
Bal Inputs
6 way Input
And Remote
Output Selector
6 x Remote
Start/Stop
Stereo Selector Version
Left Input Amp
Right Input Amp
S2-CSG Stereo Line With Gram (S2-CSGE with EQ), S2-CS Dual Stereo (S2-CSE with EQ), S2-CDS Digital Dual
Stereo (S2-CDSE with EQ), S2-CSMM Stereo Mix Minus and S2-C6SS Stereo Source Select.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Input Channels
The channel is fitted with EQ as standard
and other functions are similar to the S2-CSE
Dual Stereo channel with EQ.
Mutes
S2-C6SS
Radio Broadcast Mixing Consoles
AUD main output to the mix minus system.
The mix minus is derived from the PGM
output when selecting both PGM and AUD.
Equalisation is fitted as standard on this
channel and operates in the same was as on
the S2-CSE channel.
“
S2 is a new breed of radio
broadcast mixer. Using the latest
technology components, S2 offers
digital audio quality with analogue
reliability in a modular format.
The channel can be used to control either
one of two separate timer displays.
S2-CT
Telco Channel
The telco input channel controls the
connection to a telephone balance unit
(or hybrid). It has one balanced line level
mono input on Neutrik XLR, and one
balanced line level cleanfeed output to
return to the hybrid.
PGM button is inhibited when the channel
is “live”.
Selecting the PGM button also routes the
channel to one of the two true cleanfeed
buses (jumper selectable). When selecting
only the AUD button, for example to
record off-line telephone conversations, a
cleanfeed is generated via the channel mixminus system. When both PGM and AUD are
selected the channel operates in the true
cleanfeed mode, sending the PGM signal to
the cleanfeed bus.
Selecting the CUE/PFL & T/B button
routes the pre-fader input signal to the
monitoring system where the signal
can be heard via headphones and/or
loudspeakers. In addition, talkback is
automatically routed back to the caller
via the cleanfeed system. This enables
the presenter, or technical operator, to
communicate with the caller prior to
putting the caller live to air.
PFL can be automatically disabled when
the fader is opened.
Equalisation is fitted as standard and is
enabled by the EQ button, providing 10dB
cut and boost at HF (6.5kHz) and LF (100Hz).
The EQ button places the equalisation in
and out of the signal path and is illuminated
yellow when the EQ is active.
There is a logic remote output to place the
hybrid “on hold” by using the LINE HOLD
button. The remote output on the 9 way
D-type plug is fed from an NPN optoisolator and it can be made momentary or
latching.
“
The telco input channel controls
the connection to a telephone
balance unit (or hybrid).
Selecting the PGM and/or AUD buttons
routes the channel audio output to the
PGM and/or AUD mix buses. The buttons
are illuminated in green to indicate the
routing status. Changing the status of the
“
S2-CB
This blank channel is used to fill in areas of
the mixer where you don’t require an input
or output channel.
Routing
Input
HF/LF
EQ
PFL
PAN
PFLTo
Meter Select
To Talkback
Output
Fade R
CPU
PGM
S2-CB Blank
Channel.
EQ
PGM AUD PFL C/FEED T/B
L R L R L R 1 2 1 2
VCA
C/Feed
Output
Hybrid Latch
S2-CT Telco Input Channel
and Rear.
VCA
Trim
Input
Trim
Blank Channel
Mutes
Mixing Consoles - S2 Input Channels
“
X Selecting the PGM and/or AUD buttons
routes the channel audio output to the PGM
and/or AUD mix buses. Selecting the PGM
button also routes the PGM main output
via the mix minus system to the cleanfeed
output. Selecting the AUD button routes the
Aud
EQ
Cue
T/B
ON
Cleanfeed
Selection
And routing
Null
L From AUD
R Output
Mix Bus
S2-CT Telco Input Channel.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
There are six different
output channels available,
for controlling monitoring
in both a Control Room and
separate Studio, with the two
main output channels also
having a master fader option.
The master output channels provide
balanced analogue audio outputs as well as
simultaneous AES/EBU or S/PDIF digital audio
outputs for both PRG and AUD buses. The
analogue mono output can be selected from
PRG or AUD and meter selection is available
to show either the PRG bus, AUD bus, or to
follow the Control Room Monitor selection.
A minimum of 3 channels need to be fitted
into a mixer : channels S2-OMC, S2-ODP (or
S2-ODPF) and S2-ODA (or S2-ODAF) must be
fitted and S2-OMS is optional.
S2-OMC
Control Room Monitor Channel
The control room monitor channel is common
to every mixer and is used for the monitoring
of various sources on the control room
loudspeakers (MONITOR) on a 6.35mm stereo
jack socket and presenter’s headphones
(PHONES) on 6.35mm stereo jack sockets.
Front panel control knobs are used to vary
the monitor and headphone levels and
headphones can be plugged in on the front
or the rear of this channel. The control room
monitor loudspeaker and headphone levels
are variable between 0 (cut off ) and 10 (max).
AUTO CUE/PFL buttons adjacent to each level
control allow the monitoring of PFL when an
input channel has been selected to CUE/PFL.
In addition, SPLIT CUE/PFL can be selected
to the headphones, which will place the
selected source in mono in one ear and PFL
in mono in the other.
This channel controls the signal conditioning
for the talkback input and output and routes
these signals to and from the talkback bus.
Internal jumpers can be configured to allow
talkback to replace or dim the selected
source, dimming independently on monitor
speakers or headphones.
A Global Talkback system can be configured
to allow every contribution point in the
control room and studio to communicate
with each other via their microphone
and headphones.
S2-OMS
Studio Monitor Channel
PGM Aud
O/P O/P
L R L R
Rev T/B
Timers
The studio monitor channel is optional and
is used for the monitoring of various sources
on the studio loudspeakers (MONITOR) on
a 6.35mm stereo jack socket and studio
A four way electronically interlocking switch
headphones (PHONES) on a 6.35mm stereo
bank selects the source routed to the speakers
jack socket.
and headphones from either of two external
inputs (EXT 1, EXT 2), the PGM, or AUD output. A front panel control is used to vary
the monitor level. The studio monitor
The buttons illuminate to show the selected
loudspeaker level can be variable between
source, PGM and AUD in green, EXT 1 and
0 (cut off ) and 10 (max). The output will need
EXT 2 in red. The external inputs can be used
to be fed to a suitable power amplifier to
for monitoring an off air signal or another
X
drive the loudspeakers. Headphones with
studio output.
PFL T/B
O/P O/P
L R 1 2
PGM
Aud
EXT 1
To S2-CT
Telco
Cleanfeed
Selection
L&R
EXT 2
Auto
Cue
Studio
T/B
From Mutes
Bus
Level
CPU
Auto
Cue
Split
Cue
Studio C/Room
Cue/PFL Mute/
Dim Talkback
Global T/B
Level
S2-OMS Studio Monitor Channel and S2-OMC Control Room Monitor Channel.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Pres/Studio
Headphones
Rev T/B
Talkback
Output
To Monitor Meters
S2-OMC Control Room
S2-OMS Studio Monitor
Monitor Channel and Rear. Channel and Rear.
External
Inputs
C/room/
Studio
Monitors
Mixing Consoles - S2 Output Channels
Both Control Room and Studio Monitor
channels are available for controlling
what’s routed to the presenter’s and guest’s
headphones and monitor speakers.
2 external inputs can also be monitored.
An illuminated Mute LED shows when a live
microphone channel in the control room has
muted the speakers, to prevent feedback.
Mute outputs on the remote connector of the
PGM output channel can be used to remotely
illuminate “Mic Live” lights.
Radio Broadcast Mixing Consoles
X impedances of 35 ohms and above can be
driven directly from the channel headphone
connector on the rear panel.
green, EXT 1 and EXT 2 in red. External inputs
can be used for monitoring an off air signal
or another studio output.
A four way electronically interlocking
switch bank selects the source routed to the
speakers and headphones from either of
two external inputs (EXT 1, EXT 2), the PGM,
or AUD output. The buttons illuminate to
show the selected source, PGM and AUD in
An illuminated Mute LED shows when a live
microphone channel in the studio has muted
the speakers. Mute outputs on the remote
connector of the AUD output channel can be
used to remotely illuminate “Mic Live” lights.
The main power input from the S2-PSU is
on this channel.
Button switches at the top of the
channel select the mono output source
from either PGM or AUD. The Mono
compatible output could be used to
feed a mono transmitter or any station
output monitoring system that requires a
mono signal, such as a background music
system.
Green illuminated AUTO CUE/PFL buttons
adjacent to each level control allow the
monitoring of PFL when an input channel
has been selected to CUE/PFL, either to the
monitors or headphones.
Mixing Consoles - S2 Output Channels
The digital output status bits (consumer
or professional), output sample size
(16, 20 or 24 bits) and sample rate
(automatically or by internal jumpers
A separate Studio T/B button is provided to
from 32 kHz to 96 kHz) can be set.
allow the presenter/engineer to talk to the
The digital output can be synchronised
studio monitors and/or headphones and
from an external input, or from an
internal jumpers allow this talkback to
on-board master clock. There are 4
replace or dim the selected source.
different sync modes : Master, Auto, Auto
A Global Talkback system can be configured to Lock and Slave.
allow every contribution point in the control
The illuminated LOCK LED shows that
room and studio to communicate with each
the digital output is locked to the
other via their microphone and headphones.
onboard master clock, incoming word
clock or AES/EBU or S/PDIF sync signal.
The channel automatically locks to a
valid sync clock, flashing if sync is lost.
Digital PGM Output Channel
Synchronisation can be jumper disabled.
This channel is common to every mixer
and provides a digital and analogue output
from the PGM mix bus. The digital output
is available as a balanced AES/EBU signal
via a standard XLR or as S/PDIF on phono
Digital PGM Output Channel
sockets. The balanced analogue PGM
with Master Fader
output and mono output is on a 15 way
The S2-ODPF channel also has a 100mm
D-type connector. This also carries the
VCA output fader for production use which
two sets of latching relay contacts for the
provides unity gain when fully open.
control room mutes.
S2-ODP
PGM Aud
O/P O/P
L R L R
REV T/B
Timers
S2-ODPF
PFL T/B
O/P O/P
L R 1 2
Fader Option
From Left
PGM Bus
Analogue PGM
(AUD) Output Left
From Right
PGM Bus
Analogue PGM
(AUD) Output Right
Digital
Audio
Interface
Meter
Select
1
3
2
From L&R
PFL Bus
A
B
Meterbridge
1
From
Mutes Bus
AES/SPDIF
2
CPU
CR
S2-ODP Only MON
3
Aud
2
From CPU
Analogue Mono
Output
1
Output
Select
3
A/D
PGM
AES/EBU PGM
(Aud) Output
SPDIF PGM
(Aud) Output
SPDIF Sync
AES/EBU Sync
AES/SPDIF
Word Clock
From
Talkback
Bus
S2-ODP Digital PGM Output Channel and
S2-ODPF Digital PGM Output Channel with
Master Fader and Rear.
S2-ODP Digital PGM Output Channel (S2-ODPF with Master Fader) and S2-ODA Digital AUD Output Channel
(S2-ODAF with Master Fader).
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
Digital AUD Output Channel
This channel is also common to every mixer
and provides a digital and analogue output
from the AUD mix bus. The digital output is
available as a balanced AES/EBU signal via a
standard XLR or as S/PDIF on phono sockets.
The balanced analogue AUD outputs are
available on a 15 way D-type connector
which also carries the two sets of latching
relay contacts for the studio mutes.
The digital output status bits (consumer or
professional), output sample size (16, 20
or 24 bits) and sample rate (automatically
or by internal jumpers from 32 kHz to 96
kHz) can be set. The digital output can be
synchronised from an external input, or
from an on-board master clock. There are
4 different sync modes : Master, Auto, Auto
Lock and Slave.
The illuminated LOCK LED shows that the
digital output is locked to the onboard
master clock, incoming word clock or AES/
EBU or S/PDIF compatible sync signal. The
channel automatically searches for a sync
signal on the Word Clock, or the selected
digital input, and automatically locks to
a valid sync clock. If sync is lost then the
indicator will flash. Synchronisation can be
jumper disabled.
S2-PG
S2 Penny & Giles Conductive
Plastic Fader
The input and output channels of an S2
mixer can optionally be fitted with high
quality Penny & Giles faders.
S2-ODAF
Digital AUD Output Channel
with Master Fader
S2-ODA Digital AUD Output Channel
and S2-ODAF Digital AUD Output
Channel with Master Fader and Rear.
The S2-ODAF channel also has a 100mm
VCA output fader for production use which
provides unity gain when fully open.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Output Channels
Button switches at the top of the channel
select the monitoring source to the
meterbridge. Meters in the meterbridge
which are connected to the “Monitor Meter”
position will display the selected signal from
the electronically interlocking PGM, AUD, or
CR MON buttons. The CR MON signal source
is whatever is being monitored on the
presenter’s headphone on the control room
monitor channel, pre talkback and level
control. This signal could be PGM, AUD, EXT
1, EXT 2, or PFL, as selected by the presenter.
“
Following on from the Sovereign
range of audio mixers, S2 combines
all the features needed of a radio
broadcast mixer in a stylish, flushmounting chassis : a wide range of
input and output channels, PFL/cue,
fader-start operation of equipment,
automatic monitor muting on miclive, light controlling remote outputs,
optional EQ on input modules, gram
amp input options and 2 main audio
buses, allowing you to broadcast on
the PRG bus while recording on the
AUD bus, with bus output selection
on each module.
“
S2-ODA
PGM Aud
O/P O/P
L R L R
Rev T/B
In the meterbridge area
you can choose from four
styles of metering, a phase
meter, a dual timer, a PFL/
Talkback loudspeaker,
2 talkback modules, 3
switch panels and a range
of blanking plates. S2’s
meterbridge modules are
freely assignable so that you
can position them exactly
where you want them.
Timers
Mixing Consoles - S2 Meterbridge Modules
Radio Broadcast Mixing Consoles
The dual meter panels are used for
monitoring console signal levels. Up to
three different meter panels can be housed
in the meterbridge. The meters can be
configured internally to be fed from one of
three signal sources, the selected source
indicated by a LED :
Select
The output of the meter switch
on the AUD output module
which can show PGM, AUD,
or CR MON, which is the
selected monitor source on the
control room monitor module,
(EXT 1, EXT 2, PGM, or AUD)
interrupted by PFL.
Program
PGM output which can
optionally be interrupted
by PFL.
PFL
The output of the PFL bus.
S2 Without Meterbridge
The S2 is available without a meterbridge.
This does affect some of the features
available on the mixer. Contact [email protected]
sonifex.co.uk for further information and
pricing.
In the meterbridge area you can choose
from four styles of metering, a phase meter,
a dual timer, a PFL/Talkback loudspeaker, 2
talkback modules and a range of blanking
plates. S2’s meterbridge modules are freely
assignable so that you can position them
exactly where you want them.
PFL T/B
O/P O/P
L R 1 2
From Monitor Output
S2-ML
REV T/B
S2-MT
Dual Timer, Clock And Date Display
CUE/PFL
Talkback
Loudspeaker
CUE/PFL REV T/B
St ar t
St op
Reset
Mode
St ar t
S t op
Reset
Mode
To cleanfeed
Left (S2-CSMM)
PGM Meters
Monitor Meters
To Cleanfeed
Right (S2-CSMM)
PFL Meters
Phase Meters
S2-MPPM Dual PPM Meter Panel
S2-MPPT True Dual PPM Meter Panel
S2-MVU Dual VU Meter Panel
S2-ML53 Dual LED Bar Graph Meter
S2-MPH PHase Meter Panel
S2-MPPM/T Meterbridge PPM Panel, S2-MVU Meterbridge VU Meter Panel, S2-ML53 Meterbridge LED Meter Panel, S2-MPH Meterbridge Phase Meter Panel, S2-MTBS
Station Master and S2-MTB6 6 Way Talkback Panels, S2-MT Meterbridge Dual Timer Panel and S2-ML Meterbridge Loudspeaker Monitor and Talkback Panel.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
“
In the meterbridge area you
can choose from four styles of
metering, a phase meter, a dual
timer, a PFL/Talkback loudspeaker,
2 talkback modules and a range of
blanking plates.
S2-MVU
S2-ML53
Meterbridge VU Meter Panel
Meterbridge LED Meter Panel
The S2-MVU two moving coil VU meters
are configured such that a 1kHz signal, at
+4dBu at the PGM output, will indicate a
meter reading of 0VU.
The LED meter consists of 53 LEDs showing
both VU and peak representation. Both PPM
and VU scales are shown, one on each side
of the LED bar-graph.
“
Meterbridge PPM Meter Panel
S2-MPPT
Meterbridge True PPM
Meter Panel
The S2-MPPM panel has two fast-reading
moving-coil meters with PPM-style scale.
The S2-MPPT panel has two moving-coil
PPM movements, conforming to true
PPM ballistics.
The PPMs have a 1-7 scale and are
configured such that a 1kHz signal, at 0dB
at the PGM output, will indicate a meter
reading of 4. Each mark on the PPM scale
indicates a 4dB change in signal level.
S2-MPH
Meterbridge Phase Meter Panel
The S2-MPH is a phase
meter which operates on
the selected source to the
meters. 5 LED indicators
show the phase angle in
45 degree steps from
0 (in-phase) to 180
(out of phase).
A separate phase meter
can be linked to each
meter in the meterbridge.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Meterbridge Modules
S2-MPPM
Radio Broadcast Mixing Consoles
S2-MT
S2-MSB1
Meterbridge Dual Timer Panel
S2 Meterbridge Switch Panel
With 1 Button
S2-M6SS
Meterbridge 6 Way
Source Select Panel
Mixing Consoles - S2 Meterbridge Modules
This is a meterbridge panel,
1 channel wide, with 1
button which can be used for
bespoke control of the S2, or
for your own purposes, e.g.
equipment control.
Contact Sonifex with your
particular mixer control
requirements.
Each of the dual timers can be used for
timing events triggered by Timer 1, Timer 2,
or the Mic fader open signal. In addition the
upper timer is used for displaying the time
of day and the lower timer for displaying
the date. The illumination pattern of the red
LEDs indicates the timer display mode.
The date and time can be synchronised to
a very accurate internal clock or optionally
from an external source, MSF, DCF, SMPTE,
or RS232 time code string.
S2-ML
Meterbridge Loudspeaker
Monitor Panel
S2-MSB3
S2 Meterbridge Switch Panel
With 3 Buttons
This is a meterbridge panel,
1 channel wide, with 3
buttons which can be used
for bespoke control of the
S2, or for your own purposes,
e.g. equipment control, or for
transmission control linked to
an RB-OA3 on-air switcher.
Contact Sonifex with your
particular mixer control
requirements.
The meterbridge source selector panel
produces a stereo analogue audio output
from 6 selectable stereo analogue sources,
which can be connected to a stereo input
channel within the mixer, or the EXT 1
and EXT 2 monitor inputs, to provide up to
12 external monitor inputs. There are
6 illuminated push buttons, which select
and indicate the current channel selection.
The 6 stereo sources are connected on the
rear of the panel via a connector, which uses
exactly the same pin configuration as the
stereo audio source input connector on the
S2-C6SS channel.
Alternative Button Text
For meterbridge panels, the buttons can be
supplied with different printed script. A few
examples are shown here, but for a full list,
please go to the Sonifex website:
www.sonifex.co.uk/s2/s2-buttons.shtml
The S2-ML speaker is used for monitoring
PFL and reverse talkback in the control room
directly from the mixer. Two control knobs
are provided for adjusting the levels of the
PFL and Talkback signals from cut-off at 0
to unity gain at 10. The speaker is muted
automatically when the control room mute
is active, to prevent feedback.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
“
The dual meter panels are used
for monitoring console signal levels.
Up to three different meter panels
can be housed in the meterbridge.
S2-MTBS
Meterbridge Station
Master Talkback Panel
“
S2-MB1-5
Meterbridge 6 Way
Talkback Panel
This is used for communicating with up to
6 other locations, studios or mixers, and
with the Sonifex TB-6D and TB-6R talkback
intercoms. While a button is pressed, the
switch is illuminated and the talkback
is active. The buttons work with both a
momentary and latched operation - if held
down, the selection is cancelled on release.
Otherwise the button is alternate action.
Meterbridge Blanking
Plates 1 - 5
Meterbridge blanking plates are available
in channel widths from 1 to 5 inclusive and
are used to fill areas in the meterbridge not
occupied by active modules.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Meterbridge Modules
This is used for interfacing with a Sonifex
Station Master studio switcher and talkback
router, or the RB-OA3 on-air switcher, and
has buttons for talkback, Offer and Accept
switching and profanity delay control.
S2-MTB6
Radio Broadcast Mixing Consoles
The S2 chassis is available in 5 channel
width sections, allowing 5, 10, 15, 20, 25 and
30 channel width mixers. This means S2 can
be used for small newsrooms or large
on-air situations.
S2-05
Model No.
S2-05
S2-10
S2-15
S2-20
S2-25
S2-30
Number of Channels
5
10
15
20
25
30
Script Space
S2-10
Chassis
Mixing Consoles - S2 Chassis Sizes
S2-7SS
Chassis Sizes
Chassis Design
Chassis
Chassis with 5 channel width sections.
Chassis with 10 channel width sections.
The script space occupies an area of 7
channel widths, and is designed to hold
documents or scripts for the mixer operator
when desk space is at a premium.
The S2-7SS Script Space is 266mm wide x
390mm deep.
S2-10SS
Script Space
S2-15
S2-20
Chassis
Chassis
Chassis with 15 channel width sections.
S2-25
Chassis with 20 channel width sections.
This script space is 10 channels wide and
is large enough for a small keyboard.
The S2-10SS Script Space is 380mm wide x
390mm deep.
S2-30
Chassis
Chassis
Chassis with 25 channel width sections.
Chassis with 30 channel width sections.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
Woodwork
Rear Edge
276mm
40mm
Solutions Single Mixer Furniture Package Showing an
S2-25 Mixer.
506mm
S2 Mixer
Viewed from Side Profile
196mm S2-5
387mm S2-10
Woodwork
Front Edge
577mm S2-15
768mm S2-20
958mm S2-25
1149mm S2-30
180mm
10mm
7°
117mm
23mm
Mounting Holes 5mm Diameter
505mm
521mm 565mm
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Mixing Consoles - S2 Mixer Placement In Furniture
S2 Placement in Cut-Out
Viewed from Above
Radio Broadcast Mixing Consoles
S2-PSU
S2-BI
Power Supply
Bus Interlink Cable
Dimensions (S2-PSU)
(Raw):
(Boxed):
48cm (W) x 24.3cm (D) x 4.4cm (H)
19” (W) x 10” (D) x 3.5” (H)
51cm (W) x 41.5cm (D) x 17cm (H)
20” (W) x 16.3” (D) x 6.7” (H)
Weight (S2-PSU)
Nett: 6kg
Gross: 7.8kg
Nett: 13.2lbs Gross: 17lbs
The S2-PSU is a 1U high rack-mount unit,
which supplies power to the entire range of
S2 mixers. A lead with a special 9 pin D-Type
socket on each end is used to connect the
power supply to the S2-ODP PGM output
channel on the mixer.
LEDs on the front of the unit indicate
whether the power to the voltage rails is
being supplied correctly.
This is used to connect two S2 chassis so
that they can function as one mixer.
Note that a maximum total of 30 channels
is allowed in a split mixer configuration.
“
S2 offers digital audio quality
with analogue reliability in a
modular format. S2 has both digital
and analogue input channels,
together with simultaneous
analogue and digital outputs.
“
Mixing Consoles - S2 Power Supply
S2-PSU Front Panel.
S2-PSU Back Panel.
S2-PSUS
Dual Power Supply Switcher
Dimensions (S2-PSUS)
(Raw):
(Boxed):
48cm (W) x 23cm (D) x 4.4cm (H)
19” (W) x 9” (D) x 1.7” (H)
55cm (W) x 39.3cm (D) x 8.5cm (H)
21.6” (W) x 15.5” (D) x 3.4” (H)
Weight (S2-PSUS)
S2-PSUS Front Panel.
The S2-PSUS is a passive power switcher
which takes the power feeds from
2 x S2-PSU units and switches between
them in the event of failure. Two trailing
leads 0.5m in length connect to 2 x S2-PSU
units. With LED failure indicators and GPI
alarms, the S2-PSUS is the perfect dual
redundant power supply module.
Nett: 1.58kg Gross: 2kg
Nett: 3.5lbs Gross: 4.4lbs
S2-PSUS Back Panel.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
Technical Specification For S2
Stereo Inputs (unity -89dB
gain, no routing):
Stereo Inputs (unity -86dB
gain, one channel routed):
Stereo Inputs (unity -83dB
gain, two channels routed):
Input/Output Gain Range
Mic Input:
Preset pot +13dB to +66dB ref
-50dBu, TRIM pot ±12dB
Mono Line Input:
Preset pot -6dB to +10dB ref
0dBu, TRIM pot ±12dB
Stereo Line Input:
Preset pot -6dB to +10dB ref
0dBu, TRIM pot ±12dB
Telco Input:
Preset pot -6dB to +10dB ref
0dBu, TRIM pot ±12dB
Telco Output:
Preset pot -6dB to +4dB ref 0dBu
Mix Minus Input:
Preset pot -6dB to +10dB ref
0dBu, TRIM pot ±12dB
Mix Minus Output:
Preset pot -3dB to +3dB ref 0dBu
Digital Input:
0dBFS = +12dBu on input;
TRIM pot ±12dB allowing 0dBu
to +24dBu
Digital Output:
0dBFS = +18dBu
Equalisation
LF Shelving at 100Hz: ±7dB
HF Shelving at 6.5kHz: ±7dB
Frequency Response
Mic Input:
40Hz to 20kHz, -1dB,+0dB
(-3dB at 130Hz with HPF in)
Line Inputs:
20Hz to 20kHz, - 0.5dB,+0dB
RIAA Input:
30Hz to 16kHz ±1.5dB RIAA
equalised
Distortion
Total Harmonic
Distortion:
0.015% at 1kHz, 0dB
0.025% at 10kHz, 0dB
Crosstalk
Inter-channel:
Stereo:
< -90dBu
-90dBu at 1kHz
Range
Pan Range:
Balance Range:
Common Mode Rejection Ratio
Mic Input:
> 100dB at 70dB gain
Digital I/O
Sync Input Sample
30kHz - 100kHz
Rate:
Output Sample Rates 32kHz, 44.1kHz, 48kHz, & 96kHz
(Using Onboard Clock):
(Using Sync Input):
30kHz - 100kHz
Output Sample Width: 16, 20, 24 bit
Output
Headphone
Output Load:
Maximum Output
(Analogue):
Noise (20Hz to 20kHz)
Mic Input E.I.N.:
-129dB with 150Ω source
Stereo Inputs (fader -89dB ref 0dB
down, no routing):
Stereo Inputs (fader -89dB
down, one channel routed):
Pot position: Fully clockwise,
centre, fully anti-clockwise;
Left: Off, 0dB, +3dB;
Right: +3dB, 0dB, Off
respectively.
±6dB
Power
Power (S2-PSU):
>45Ω, 400Ω
recommended
+26dBu balanced
into 2kΩ or greater
Filtered IEC, switchable 115V,
230V, fused, 210Ω max.
S2 Mixer Weights and Boxed Dimensions For S2
Mixer
Type
S2-30
S2-25
S2-20
S2-15
S2-10
S2-05
Width
(cm)
137cm
117cm
100cm
80cm
60cm
60cm
Width
(inches)
53.9”
46.0”
39.4”
31.5”
23.6”
23.6”
Depth
(cm)
70cm
70cm
70cm
70cm
70cm
70cm
Depth
(inches)
27.6”
27.6”
27.6”
27.6”
27.6”
27.6”
Height
(cm)
45cm
45cm
45cm
45cm
45cm
45cm
Height
(inches)
17.7”
17.7”
17.7”
17.7”
17.7”
17.7”
Gross
Weight
(kg)
36kg
35kg
33kg
27kg
25kg
22kg
Gross
Weight
(lbs)
79lbs
77lbs
73lbs
59lbs
55lbs
48lbs
Nett
Weight
(kg)
32kg
31kg
29kg
24kg
22kg
20kg
Please note that the weights given are approximate because the exact weight will depend on the mixer
modules chosen.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: [email protected] Internet: www.sonifex.co.uk
Nett
Weight
(lbs)
70lbs
68lbs
64lbs
53lbs
48lbs
44lbs
Mixing Consoles - S2
Input/Output Impedances
Mic Input:
> 1k5Ω electronically balanced
Mono Line Input:
> 20kΩ electronically
balanced
Stereo Line Input:
> 20kΩ electronically
balanced
PGM & AUD Output: < 75Ω electronically balanced
Mono Output:
< 75Ω electronically balanced
Monitor Outputs:
< 75Ω unbalanced
AES Input/Output:
110Ω
S/PDIF Input/Output: 75Ω
BNC Wordclock input: 50Ω
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