SV Sound SX-VT, SX-ST user manual Balance Left Right, Mix busses 1/2 to 7/8 assignments

-if PRE fader is selected, the level can still be monitored even if the channel is turned Off ( Muted )

5.6Channel Fader

The Stereo Input module is equipped with two VCA circuitries ( Voltage Controlled Amplifier ), one for each of the L & R signal. The channel fader controls the L & R audio levels in a range from – infinite to +12dB by means of a single DC voltage equally applied to both VCA's.

5.7 Balance Left – Right

The Balance knob also take part of the VCA circuitry. It balances the stereo signal between the odd ( Left ) and the even ( Right ) sides of a mix bus pair by means of a DC voltage applied in an opposite way to the VCA's.

NOTE: the Balance also affects the AUX pairs 1/2 & 3/4 when selected Post Fader

5.8 Mix busses 1/2 to 7/8 assignments

The advanced routing selector switches are used to assign the stereo signal to the Mix busses per pair either Pre Fader or Post Balance ( Post Balance being obviously post fader ! )

The SONOSAX SX-VT series are equipped with eight mix busses. Thus, Stereo channels can be assigned to any pair of mix busses using the 8 switches to create up to 4 stereo groups using pairs 1/2 - 3/4 – 5/6 – 7/8.

Logically, if a stereo signal has been Mono mixed by using the MONO selector, then the Mono signal can be assigned as such to any of the 8 mix busses.

The 3 positions switches of the routing selectors 1 to 8 are used to assign the mix busses either Pre Fader or Post Balance as follow:

Switches 1 to 8 in Centre Position : OFF , no assignment

Switches 1-3-5-7 in Left position : assign the channel to Odd busses Post Balance

Switches 1-3-5-7 in Right position : assign the channel to Odd busses Pre Fader

Switches 2-4-6-8 in Right position : assign the channel to Even busses Post Balance

Switches 2-4-6-8 in Left position : assign the channel to Even busses Pre Fader

The two lines drawn either sides of the selector give a clear view of the Pre Fader / Post Balance assignment: when the switches are set toward the drawn lines, corresponding busses are assigned Post Balance.

A good tip is to remember that, conventionally, Odd busses are defined as Left channels and Even buses are defined as Right channel in a stereo group. Therefore, by setting Odd switches to the Left and Even switches to the Right you logically assign the stereo busses Post Balance.

5.9 ON Push button

It turns all the mix bus sends ON or OFF (Mute). This function is absolutely noiseless and affects the mix busses 1 to 8, the Pre and Post fader Aux Sends, and the channel solo.

NOTES: - While powering up the mixer, all channels are turned OFF by factory default. Channels can be turned ON during power up by soldering jumper S10.

-For monitoring purposes, the PFL signal and Pre Fader level meter remain available even if the channel is turned OFF ( Muted )

-The ON/OFF function can be controlled from an external device. ( optional on SX-VT only )

5.9.1 ON status LED

The LED lit ON to indicate the "ON" status of the input module (factory default).

NOTE: By implementing jumper S11, this Led will turn ON to indicate the OFF (or MUTE) status.

This status can be displayed on a remote control panel for a better global view. ( optional on SX-VT only)

SX-ST / SX-SV User Manual page 20