AudioTouch c-buss User manual

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/ Advanced Stereo Compressor
USER MANUAL
INTRODUCTION:
You do not want to choose between the flexibility of the digital world and the warmth, definition and dynamic of analog
technology: the AudioTouch conce t allows you to have the best of both worlds.
AudioTouch offers a digitally controlled true analog audio device with an innovative design and a very high-level
handcrafted construction.
With incredible setting combinations, the ossibility to save settings in several memories and the control by ' lugin', the
c-buss is the first of a new generation of audio gear.
The c-buss unit is intended for use in stereo/buss com ression treatment: drums, brass… etc
MAIN FEATURES:
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• O timal audio ath with carefully selected com onents for the best sound quality
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• Balanced transformer-like IN & OUT circuits with very high CMRR
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• Vintage Mode with Feedback Mode com ression and audio transformers
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• Exclusive setting: ‘Isosonic’ Dyness based on human hearing erce tion (“equal-loudness contours”)
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• Mix setting wet/dry
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• Hard By ass (by ass when ower off)
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• External Balanced L/R Sidechain In uts
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• Extended functions: ‘Auto’ mode on release and ‘Limit’ mode on Ratio
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• 21 user memories
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• Fully controllable with a lugin software integrated in a sequencer (DAW)
SAFETY INSTRUCTIONS:
POWER SOURCES: The c-buss should only be connected to a ower su ly of the ty e indicated on the rear anel. Before
connecting the unit, check the Mains Voltage selected and verify if it is correct for your country.
The Mains Voltage of unit is either 110-120V or 220-240V and can be configured with the selector on rear anel (only
when the ower is off).
FUSE: Before a lying ower to the unit, make sure the a ro riate fuse is installed. Slow-blow ty e, 500mA for 110V
o eration and 250mA for 220V o eration. If necessary, test and re lace the fuse with the same ty e and rating.
GROUNDING: This unit must be earthed ! It is rovided with a 3- rong safety ower cable. The grounding in is
connected to the metal arts of the housing and should not be disconnected for any reason.
SERVICING: There is no maintenance required by the user. All servicing should be referred to qualified service ersonnel.
CAUTION: Never remove the cover. There are no user serviceable arts inside.
WARRANTY VOID IF UNIT IS OPENED
AudioTouch warrants this unit to be free of defects in construction for a
eriod of two years from recei t by the original end user. This warranty
shall not a ly to damage resulting from misuse.
Do not try to re air this unit. There are no user serviceable com onents
inside. Only technicians agreed by AudioTouch are authorized to re air
this unit.
AUDIO-TOUCH, avenue figairettes, 34160 Cam agne, France
Email: contact.audio[email protected]m Web: www.audio-touch.com

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2
3
4
4
A
1. POWER ON
Main Voltage setting should be selected at 115 or 230V/AC
with selector (A). f correct for your country, you can
connect the power cord included and push on the power
switch in Front panel.
2. MIDI CONNECTIONS
For plugin Remote, standard M D cables
can be used in order to chain several
devices, each with an unique 'M D
number' (B).
3. SIDECHAIN CONNECTIONS
XLR electronically balanced
nputs are active only if EXT
S DECHA N (
10
) is engaged.
4. AUDIO CONNECTIONS
XLR nputs and Outputs are electronically balanced with
differential signal between pins 2 & 3. Pin 1 is normally connected
to Ground except for Outputs if GND L FT (
G
) is engaged.
C
R
5
D
6
6
6
6
6
7
8
E
1
10
9
1
1
1
2
1
2
G
B
3
4
4
5. METERS
n order to check signal integrity, each L/R
nput/Output has his own VU-meter. The
GR meter shows the amount of gain
reduction in 2dB steps, up to 20 dB.
5
5
6. Classic Comp esso CONTROLS
THR [Threshold]: This sets the level above which signals will be
compressed.
ATT [Attack]: allows to adjust the time it takes the compressor to
react to the input signal.
RATIO: Sets the compression slope, how the output signal will
change in relation to the input signal when above the threshold.
Special Mode ‘limit’ (C) provides a limiter effect.
REL [Release]: allows adjustment of the compressor's unity gain
return time after going into compression.
Mode ‘auto’ (D) is a special setting 'program-dependent' for
release time.
M-UP [Make-up gain]: output gain adjustment after processing.
Special modes are activated by pressing and holding Encoder (E).
7. DYNESS SETTING (INTERNAL SIDECHAIN)
The Low Shelving Filter avoids triggering the
sidechain with low frequencies. With the
' SOSON C’ DYNESS function engaged (9), the
mid-freq pre-emphasis allows to soften some
aggressive sounds. n the 2 cases, there are 3
levels of adjustment possible: L1, L2 and L3.
8. MIX SETTING
Allows a true mix between compressed signal and
dry signal. When nput level and compressed
Output level are the same, Outputs are constant-
level regardless the M X setting.
INTERNAL MEMORIES
There are 21 memories available to the user.
Pushing and holding Encoder (E) provides access to
memory functions. Memories are represented by
function keys (6-8) in 3 'banks' represented by the
illuminated keys 9-11. Then press a flashing button
to recall the associated memory. To write to a
memory, select the desired location with (E) and
then push and hold (E).
USER INTERFACE (AN@TOUCH) ©
The ‘Patent pending’ intuitive user interface
an@touch allows explicit display of all
parameters and their modification, storage
and recall.
t consists of a rotary luminous encoder (E)
used to changing the parameters for each
function selected by associated key (6 to 8).
PLUGIN REMOTE
C-buss is fully controllable with a software
(plugin) integrated in a host sequencer.
When the device is synchronized with the
software, the REMOTE (R) indicator turns
blue. t is red if there’
s a problem.
11. VINTAGE MODE
t is a special mode with ‘old’ Feedback type
compression, and transformers added in the audio
path instead of capacitors.
10. EXT SIDECHAIN
Allows XLR external connections (3) for Stereo
sidechain detection. f only one channel is
connected, operation is Mono.
9. ‘ISOSONIC’ DYNESS
Based on the ‘isosonic’ human hearing perception,
the accentuation of mediums on the detection
circuit (sidechain) enables new possibilities.
12. HARD BYPASS
True Bypass means that Output XLRs are directly
connected to the nput XLRs. When the unit is off,
Bypass is active.
c
-
buss2012
USER
MANUAL
©2013
A
udioTouch
A

DYNESS GRAPH:
‘ISOSONIC’ DYNESS GRAPH:
TECHNICAL SPECIFICAT
IONS
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•Jensen/That Balanced IN & OUT
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•High CMRR Input: > 85 dB
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•req. response(-3dB): 10Hz - 90kHz
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•Max. Input Level: + 21 dBu
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•Max. Output Level: + 21dBu / 600Ω
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•Power consumption: max 20 Watts
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•Dimensions: 19”-1U- 220mm depth