SONOSAX SX-R4 (Firmware v3.1) - Manual (Page 13)

User manual SONOSAX SX-R4 Page 13 of 53
4.3 FRONT PANEL
The front side of the SX-R4 contains all functions commonly used during a recording session. It has two
distinct sections: the analog section that controls the inputs channels and the User Interface that controls all
functions of the recorder.
ANALOG SECTION [ IN1 to IN4 ]
This section covers the functions related to input control such as Gain level, channels linking. It also offers a
small 3 LEDs peak-meters to visualize the modulation level, the eventual overloads and also to indicates the
Limiter activities.
4.3.1 Input Gain control [ LO-HI ]
The input gain is controlled jointly by the gain switches [ LO-HI ] and the gain potentiometer.
position High [ HI ] the input sensitivity goes from –18,5 dBu to –61,0 dBu for 0 dBFS
position Low [ LO ] the input sensitivity goes from +1.5 dBu to –38.5 dBu for 0 dBFS
position Low [ LO ] with [ PAD ] the input sensitivity goes from +21.5 dBu to –18.5 dBu for 0 dBFS
NOTE: Gain control should be used with care since the adjustment range is extensive. A signal level
set too high can cause distortion and will leave you with less headroom; a level set too low
causes a bad signal-to-noise ratio.
4.3.2 Channel Linking [ LINK ]
This switches allow to Link the Gain potentiometers of the input channels, thus a single potentiometer
controls two or more channels which ensure to keep the stereo balance of a stereo microphone, a M/S pair or
any other stereo source.
The Linking can be done either per pairs of channels such as for example 1 & 2 and/or 3 & 4, or for 3
channels such as for double M/S system by linking channels 2 & 3 & 4, or even all 4 channels together as for
the Soundfied "B-Format" where all four channels will be linked to channel # 4 that has a quad potentiometer.
The Linking's are achieved as follow:
Channel nr 1: lower position = no linking
position 2 = Link channel 1 to channel 2. Fader nr 2 controls channels 1 & 2
position 4 = Link channel 1 to channel 4. Fader nr 4 controls channels 1 & 4
Channel nr 2: lower position = no linking
position 3 = Link channel 2 to channel 3. Fader nr 3 controls channels 2 & 3
position 4 = Link channel 2 to channel 4. Fader nr 4 controls channels 2 & 4
Channel nr 3: lower position = no linking
position 4 = Link channel 3 to channel 4. Fader nr 4 controls channels 3 & 4