S1 Radio Broadcast Mixer
S1 Radio Broadcast Mixer
June 2012
catalogue
Manufacturers of audio & video products
for radio & TV broadcasters
Radio Broadcast Mixing Consoles
S1
Radio Broadcast Mixer
The small radio mixer that’s big on features
radio broadcast mixer.
It has a ‘no compromise
on quality’ approach
with excellent mic amps,
comprehensive facilities &
simple, reliable operation.
Mixing Consoles - S1
The S1 has an amazing
feature set and offers a
proper broadcast solution to
community, educational and
student radio stations that
need a versatile, reliable
S1 Digital/Analogue Radio Broadcast Mixer.
The Sonifex S1 mixer is a high performance
compact, low cost, fixed format mixing
console designed for on-air radio use. It
can be fitted flush into a desktop or can be
rack-mounted by the addition of optional
rack ears. The rear connectivity panel can
be rotated 90˚ onto the base of the unit
providing easier connection to the unit
when it is rack-mounted. It has an integral
universal switch mode power supply, which
uses an IEC inlet.
It maintains the same front panel ease of use
found on the Sonifex S2 whilst providing
advanced automated features not seen on
any other product currently available on
the market.
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digital inputs.
The console consists of ten input
channels:
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input.
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inputs/ stereo ¼” jack unbalanced line
input.
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input.
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one with a 3.5mm stereo aux input.
Providing in total 5 mic, 4 mono line, 10
stereo analogue, 2 stereo digital, 1 telco &
1 stereo cleanfeed inputs which you can
switch between.
Wide-Ranging Input Channels
Input source buttons at the top of each
channel strip are used to route the
connected source to the mixer buses.
All of the balanced XLR input connectors
have a 10dB gain switch on the rear panel
for use with unbalanced or low level input
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: sales@sonifex.co.uk Internet: www.sonifex.co.uk
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Radio Broadcast Mixing Consoles
X sources. The XLR microphone inputs have
individual +48V phantom power switches
and a gain calibration potentiometer
providing up to 65dB of gain for the preamp.
Input channels 1 & 2 have 2 separate
XLRs for microphone & balanced line
input sources.
Mixing Consoles - S1
Input channels 3 and 4 use an XLR and a
combination XLR/stereo jack connector
to allow a microphone input and both a
balanced mono or an unbalanced stereo line
input to be used.
Input channel 5 acts as microphone input or
as a telco input with a dedicated cleanfeed
output, with available line hold remote for
connection to a telephone hybrid.
Input channel 6 is a balanced stereo
line input on XLR together with a stereo
cleanfeed input on balanced XLR for use
with ISDN codecs.
Input channels 7 & 8 have stereo balanced
XLRs and stereo unbalanced phonos on the
rear and channel 7 also has a 3.5mm insert
jack socket on the front panel for use with
an mp3 player/iPod.
Input channels 9 and 10 provide a stereo
analogue XLR input and stereo digital S/
PDIF and TOSLink optical inputs.
Any channel which has the fader up and the
ON button selected is routed to the main
PGM output(s).
Gain for each channel is trimmed by the
front panel TRIM control providing ± 12dB
of gain.
Equalisation is provided on every input
channel, allowing up to 7dB cut and boost
at HF (6.5 kHz) and LF (100Hz). A PAN/
BAL(ance) control is available to facilitate
stereo imaging.
The use of VCAs controlled by the
ALPS long throw 100mm faders give a
smooth, repeatable response and ensures
tight stereo tracking while eliminating
mechanical and electronic noise.
Analogue & Digital Outputs
The S1 has a multitude of output
connectivity: one balanced stereo XLR PGM
output, two balanced stereo AUX outputs
on a 9-way D-type socket, a mono clean
feed output on balanced XLR (for use with
a telephone hybrid), a stereo cleanfeed
output on stereo balanced XLRs (for use
with an ISDN/IP codec) and monitor
outputs for presenter headphones, guest
headphones and loudspeakers. Additional
outputs are provided for talkback on a
9-way D-type socket and metering using a
15-way D-type socket.
A digital stereo PGM output is provided in
XLR AES/EBU or phono S/PDIF formats. The
output can be referenced to an internal
clock source between 32 kHz and 96 kHz
or external synchronisation sources can
be connected via S/PDIF, AES/EBU or BNC
wordclock. The illuminated DIGITAL SYNC
LED shows when the digital output is locked
to either an internal or external clock.
Two Auxiliary Buses
The S1 has two Auxiliary buses that can be
configured in either pre-fade or post-fade
mode. Each channel can be routed to these
buses using the potentiometers provided
on each channel strip. Each AUX output
has a trim control knob operating between
fully attenuated and unity gain. Aux buses
can be used for a wide range of purposes
including recording telephone
conversations, generating
different mixes for
output, connecting
to audio processing
equipment and
much more.
Comprehensive
Monitoring
S1-RCK Optional S1 9U 19” Rack Ears.
The control room
loudspeakers, presenter’s
headphones, and guest
headphones are on 6.35mm stereo jack
sockets. Front panel control knobs are used
to vary the monitor and headphone levels
and the presenter’s headphones can be
plugged in to the front and rear of the mixer.
The control room monitor loudspeaker and
headphone levels are variable between 0
(cut off ) and 10 (max). An illuminated MUTE
LED shows when a live microphone channel
has muted the speakers and there are two
pairs of MUTE contact outputs available to
illuminate a ‘MIC LIVE’ light.
A five way electronically interlocking switch
bank selects the source routed to the
speakers and presenter’s headphones from
either of two external inputs (EXT 1, EXT
2), the PGM, or AUX Outputs. The buttons
illuminate to show the selected source, PGM,
AUX 1 and AUX 2 in green, EXT 1 and EXT
2 in red. The external inputs can be used
for monitoring an off air signal or another
studio output.
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radio mixer.
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rack-mounting.
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output buses, pre or post fader
selectable.
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installation.
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as CD players.
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headphones, & speakers.
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selectable with separate meterbridge
output.
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control via VCAs.
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o/ps for use with a telephone hybrid &
codec respectively.
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Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: sales@sonifex.co.uk Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
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Mixing Consoles - S1
S1 Digital/Analogue Radio Broadcast Mixer, Top View.
S1 Digital/Analogue Radio Broadcast Mixer, Rear View.
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: sales@sonifex.co.uk Internet: www.sonifex.co.uk
X
Radio Broadcast Mixing Consoles
156mm
380mm
Mixing Consoles - S1
400mm
340mm
10mm
439mm
445mm
2mm
59mm
S1 Digital/Analogue Radio Broadcast Mixer Dimensions.
X 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.
For the Presenter headphones, SPLIT CUE/
PFL can be selected which places the
selected source in mono in one ear and PFL
in mono in the other.
A pair of bright 21 segment LED meters
can be configured to show either VU or
PPM metering. The meters show either the
PGM output or the selection heard in the
presenter’s headphones, selectable by PGM/
MFM (Meter Follows Monitor) button.
Talkback
A separate TALKBACK button is provided
to allow the Presenter to talk to a Guest.
The S1 uses input channel one as the
talkback source. Global talkback can also
be configured (see the Programmable
GPIO section) to allow every mic channel to
communicate with the Presenter and Guest
headphones.
A separate TALKBACK 9-way D-type
socket on the rear panel can be used to
connect the talkback output and input
to and from other studios.
Configurable Remotes Per
Channel
The remote outputs for each channel
are highly configurable providing every
possible option required to interface
your external equipment to the mixer.
Each channel input has its own START
and STOP remote controls, except the
microphone inputs which have only
START outputs. (If you wanted a MIC
stop control signal, you could configure
this using a GPIO). Each remote can be
configured to be triggered from a variety
of sources, including the ON button and
the CUE/PFL Button. The remotes can be
set-up to be either pulsed or continuous
latched outputs, and if in pulsed mode
the ON button has the capability to
produce repeated start pulses on
additional ON button presses, when the
channel is ON with the fader up.
In the case of the Telco & Stereo Cleanfeed
outputs you may want to generate start
and stop remotes independently of the
position of the fader, so that the hybrid or
codec can be triggered to connect before
the channel is opened. This is possible in
‘Telco Mode’ where a ‘start’ is sent when
the ON button is initially pressed & a ‘stop’
is sent when the ON button is pressed
again, turning the channel selection off. In
addition the channel can be configured to
show the state of the external equipment,
e.g. using a tally back GPI signal from an
automation system, the ON button can
flash green when the end of a song is
being reached.
Programmable GPIOs
The S1 also has five General Purpose
Inputs/Outputs (GPIO’s) available. Each
input/output has been designed to be
very versatile & almost any operation with
the mixer can be achieved when utilising
them. A GPI can be configured using the
SCi software to perform up to 10 different
operations from a single input.
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Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: sales@sonifex.co.uk Internet: www.sonifex.co.uk
Radio Broadcast Mixing Consoles
This configuration would use 9 of the 10
operations available for an individual GPI.
This would allow the guests to freely talk to
each other until one of their microphones
goes live. This is just an example of the
potential uses of the programmable GPIOs.
“
The S1 also has five General
Purpose Inputs/Outputs (GPIO’s)
available. Each input/output has
been designed to be very versatile
& almost any operation with the
mixer can be achieved when
utilising them.
Remote Control & Configuration
Using SCi Software
The S1 mixer is highly configurable and
has numerous options allowing the
mixer configuration to be tailored to your
requirements. Using the freely available
Sonifex SCi software, every parameter of
the mixer can be set up with ease.
Technical Specification For S1
Input / Output Impedances
Mic Input:
> 1k5Ω electronically balanced
Mono Line Input: > 20kΩ electronically balanced
Stereo Line Input: > 20kΩ electronically balanced
PGM Output:
< 50Ω electronically balanced
Monitor Outputs: < 75Ω unbalanced
AES Input/Output: 110Ω
S/PDIF Input/
75Ω
Output:
BNC Wordclock
50Ω
Input:
Input / Output Gain Range
Mic Input:
Preset pot +21dB to +64dB ref
-50dBu, TRIM pot ± 12dB
Mono Line
Switch 0dB to +10dB ref 0dBu,
Input:
TRIM pot ± 12dB
Stereo
Switch 0dB to +10dB ref 0dBu,
Line Input:
TRIM pot ± 12dB
Telco Input:
Switch 0dB to +10dB ref 0dBu,
TRIM pot ± 12dB
Stereo Cleanfeed Switch 0dB to +10dB ref 0dBu,
Input:
TRIM pot ± 12dB
Digital Input:
0dBFS = +18dBu on input;
TRIM pot ± 12dB allowing 0dBu
to +24dBu
Digital Output:
0dBFS = +18dBu
Frequency Response
Mic Input:
40Hz to 20kHz –1dB, +0dB
Line Inputs:
20Hz to 20kHz –0.5dB, +0dB
RCA Inputs:
20Hz to 20kHz –0.5dB, +0dB
Noise (20Hz to 20kHz)
Mic Input E.I.N.:
-130dB with 150Ω source.
Stereo Inputs
-92dBu ref 0dB (fader down, no
routing)
-91dBu (fader down, one channel
routed)
-86 dBu (unity gain, one channel
routed)
-83 dBu (unity gain, two channels
routed)
Distortion
Total Harmonic
Distortion:
0.015% at 1kHz, 0dBu
0.015% at 10kHz, 0dBu
Digital Inputs:
Crosstalk
Inter-Channel:
< -80dBu typically
Equalisation
LF:
HF:
Shelving at 100Hz ± 7dB
Shelving at 6.5kHz ± 7dB
Range
Pan Range:
Balance Range:
Off/-3dB centre/off
± 6dB
Common Mode Rejection Ratio
Mic Input:
>60dB typically
Digital I/O
Sync Input Sample 32kHz – 96kHz
Rate Range:
Output Sample
32kHz, 44.1kHz, 48kHz, & 96kHz
Rates:
(Using Onboard Clock)
Output Sample
24 bit
Width:
Output
Headphone
>45 ohms, recommended 400
Output Load:
Maximum Output +26dBu balanced into 2k or greater
(Analogue):
Rear Panel Switches
Phantom Power: +48V individual per mic input
Gain Switch:
+10dB per XLR balanced mono &
stereo input & EXT 1, EXT 2 inputs
Input & Output Connections
Analogue Inputs: 5 x Microphone XLR 3 pin sockets
2 x Mono line XLR 3 pin sockets
2 x Mono/stereo line combi XLR 3 pin
sockets & 6.35mm stereo jack sockets
1 x Telco XLR 3 pin socket
5 x Stereo line pairs XLR 3 pin sockets
2 x Stere line pairs phono sockets
1 x Stereo cleanfeed pair XLR 3 pin
sockets
1 x Stereo insert, 3.5mm jack socket
2 x S/PDIF phono sockets,
2 x TOSLink optical connectors
Analogue Outputs:
PGM:
2 x XLR 3 pin plug (balanced)
AUX:
9-way ‘D’-type socket (balanced)
TELCO:
XLR 3 pin plug (balanced)
STEREO CLEANFD: 2 x XLR 3 pin plug (balanced)
Monitor Outputs: 6.35mm stereo jack sockets (2 x
Presenter, 1 x Guest, 1 x Monitor)
Digital Outputs: AES/EBU XLR 3 pin plug (balanced) or
S/PDIF phono socket.
Digital Sync Inputs: Wordclock on BNC, AES/EBU on XLR
socket and S/PDIF on phono socket.
EXT Inputs:
9-way ‘D’-type socket
Mono Remotes:
25-way ‘D’-type plug
Stereo Remotes: 25-way ‘D’-type plug
Meterbridge Port: 15-way ‘D’-type socket
Talkback Interface: 9-way ‘D’-type socket
RS232 Serial Port: 9-way ‘D’-type socket
Mains Input:
Filtered IEC, continuously rated
85-264VAC, 47-63Hz, 45w nominal,
50w peak
Fuse Rating:
Anti-surge fuse 2A 20 x 5mm
Equipment Type
S1:
S1 radio broadcast mixer
Physical Specification
Dimensions
44.5cm (W) x 40.0cm (D) x 15.6cm (H)
(Raw):
17.5” (W) x 15.75” (D) x 6.1” (H)
Dimensions
63cm (W) x 57cm (D) x 35cm (H)
(Boxed):
24.80” (W) x 22.44” (D) x 13.78” (H)
Cut-Out
44.0cm, 17.3” (W) x 38.1cm, 15” (D)
Dimensions:
both dims +0.2cm, -0cm
Weight:
Nett: 12.0kg Gross: 13.6kg
Nett: 26.4lb Gross: 29.9lb
Accessories
S1-RCK:
Optional S1 9U rack ears.
For flowcharts of the mixer & more
detailed info, please go to the
Sonifex website: www.sonifex.co.uk
Tel: +44 (0)1933 650 700 Fax: +44 (0)1933 650 726 Email: sales@sonifex.co.uk Internet: www.sonifex.co.uk
Mixing Consoles - S1
The GPOs are equally powerful. The
outputs can be configured to be pulsed
or continuous, and active high or low. An
output can be generated based on actions
required. For example, a GPO can be
configured to generate a global talkback
function with a set-up so that:
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not live, generate a GPO continuous
output.
The GPO could then be linked back
into one of the GPI’s with the input
configured to:
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situation, you may want to:
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forced up.
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www.sonifex.co.uk
t:+44 (0)1933 650 700
f:+44 (0)1933 650 726
sales@sonifex.co.uk
61 Station Road
Irthlingborough
Nor thants NN9 5QE
United Kingdom
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