SONOSAX SX-M32 - Manual (Page 9)

User manual SONOSAX SX-M32 Page 9 of 25
4.1.3 Pre-LF Cut Filter [ LF Cut ]
In lower position, this switch activates a passive low frequency cut circuitry (Pre LF-Cut). The Pre LF-Cut filter
circuitry is acting before the microphone pre-amplifier to attenuate the low frequencies of high level that could
affect the pre-amplifier and thus preventing an optimal setting of the input gain.
These low frequencies of high level can be generated, among other, by the microphone capsule especially when
recording outdoor in strong wind condition.
This Pre LF-Cut frequency is set at 130Hz and has a slope of –6dB/octave.
4.1.4 Input Attenuator [ PAD ]
In lower position, this switch activates a 20dB Line attenuator [PAD] on the corresponding channel [IN1 à IN3].
NOTE:
The [PAD] should only be used for high level signals such as Line level coming from an external
device. For an optimal signal to noise ratio it is recommended not to use the PAD.
4.1.5 Phase reversal [
Ø
]
In lower position, this switch reverses the phase by 180 degree of the input signal. It can be used to correct a
reversed cable wiring or to address a phase problem between two microphones due to their placement. It can also
be used to progressively decode a M/S signal on a three ways decoding method.
4.1.6 Auxiliary stereo Bus Input [ BUS IN ]
This input lets you connect any external audio device directly on the mix busses L & R. This bus input has a unity
gain without any adjustment.
It can be used for example to connect two SX-M32 mixers together to build a six channels mixer or any other
analogue source at line level.
The BUS IN connector is a TA-3 male mini-XLR where:
Pin1 = Gnd, Pin2 = Left channel, Pin3 = Right channel.
The mating female cable connector is available under following SONOSAX references: SX 860266
Or by Switchcraft, ref: TA3F
4.1.7 External DC input [ DC IN ]
The SONOSAX SX-M32 can be powered by means of an external DC supply, either a main adapter or an external
high capacity battery bank. The DC voltage must be regulated between 6 to 18VDC
The average power consumption of the mixer is around 4 to 5 Watts. This represents a DC current of 400mA
under a voltage of 12Volts. However, while turning On the mixer, the inrush current may reach 1A under 12V ,
therefore make sure that your external DC supply can sustain this peak of current
To ensure optimal performances we recommend you to use the optional main adapter available by SONOSAX or
your local dealer. The reference number is SX 008440.
the DC IN connector is a Hirose 4 pin female :
Pin 1 = Gnd ou negative / Pin4 = +V DC or positive; the voltage range is 6 to 18 Volts DC
The Hirose 4 pin mating male cable connector is available by SONOSAX or by your local dealer under references:
SONOSAX part nr SX860217 or Hirose HR10-7P-4P