SV Sound SX-ST, SX-VT user manual LF Cut and Equalizer

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4.5 LF Cut and Equalizer

The SONOSAX SX-ST / SX-VT series input module is equipped with a powerful filtering and equalization section. Its design is derived from our previous model SONOSAX SX-S on which the efficiency and sonic integrity have been well proven in practice for decades.

The Equalizer IN or OUT switch activates or bypasses the filtering of 80 Hz, 8 kHz and MF tones. It is also used for instant comparison of filtered and non-filtered audio.

NOTE: The EQ IN/OUT switch can be configured to include the LF Cut or not, depending on the position of the jumper S-7 on the circuit board. By default, the LF Cut is not dependant of the EQ In/Out switch.

Following filters are available:

LF CUT: also called High Pass Filter, this Low Frequencies filter has a fixed slope of 18 dB per octave. The cut-off frequency is progressively adjustable from 15 Hz up to 400 Hz.

This filter is commonly used to remove unwanted low frequency noises such as room rumble, wind noise, popping, etc. For quality reasons, the LF Cut is located after the pre-amp stage, however in cases of extreme high wind noise or loud room rumble, it may becomes difficult to capture clear sound. In such cases, we recommend to use an external LF Filter like e.g. the LC60 or LC120 made by Shoeps.

80 Hz and 8 kHz: bass and treble adjustments are achieved using two ± 15 dB knobs.

MF: is a semi-parametric (swappable) equalizer with a broad fixed bandwidth. ( Q Factor: xx )

Medium frequencies adjustment is achieved using one knob to progressively adjust the central frequency from 200 Hz to 8 kHz, the other to adjust the amplitude within a range of ±15 dB.

SX-ST / SX-SV User Manual

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Contents Audio equipment manufacturer Sonosax SX-ST / SX-VTTable of Contents LED Specifications Introduction Key FeaturesVCA and Compressor options General DescriptionSafety Instructions InstallationRemoving the battery compartment Battery Power Mode SX-ST Series onlyOpening the battery compartment Closing the battery compartment External DC Power Mode SX-ST Series onlyBatteries charger option for SX-ST Series only Operating Instructions MIC / Line Input Module Mic power switch Input Select Switch∅ Phase reversal switch Gain ControlsLF Cut and Equalizer Mix busses 1 to 8 assignment AUX 1 to 4 PRE/OFF/POST switchesAUX Sends 1 to Dual Peak Level MetersChannel Fader On Push button13 PFL/AFL push button Channel Power switch SX-ST series onlyMute function On Air signaling SX-VT serie onlyStereo Line Input Module Mono selector Left & Right Gain ControlStereo Equalizer Mix busses 1/2 to 7/8 assignments Balance Left Right11 PFL/AFL push button Remote11.1 P/A LED VCAs Group Selector optional on SX-VT Series onlyChannels A/D Converter Master & Monitoring Module Meters Backlight switch 1 ST / M / Low Batt switchLeds switches MetersPower ON/OFF PFL/AFL/SOLO and operating modeTalkback/SLATE and Oscillator Returns 1 toCommunication and Private Lines MonitoringGroups and Aux Master Sections Summary of characteristics SpecificationsGeneral and notes Gain Mic/Line inputsAuxiliary outputs Main outputsMonitor outputs Return InputsOperating temperature Power requirementsDimensions and weight