Connections
COM and GND Terminals
A shorting jumper typically connects the COM and GND terminals of the amplifier together. The COM terminal is a common lead from the output transformer. For the
Connecting the GND to the COM terminal when using the transformer- coupled outputs references the transformer output to ground. Disconnecting the GND terminal from COM allows the transformer output to float electrically.This is sometimes useful under certain condi- tions where a ground connection is undesirable. It is generally a good idea, however, to short the GND to the COM terminal regardless of output type (Trans or Direct).
Remote Volume Control
Three terminals are provided for remote control of the Master Volume control. This control is motorized, allowing full control over the setting of the master volume. Shorting the UP terminal with the C terminal will rotate the Master Volume control in a clockwise direction, increasing the volume level. Shorting the DN terminal to the C terminal will cause the Master Volume control to rotate in a counterclockwise direction and decrease the level of the Master Volume control. The impedance of the shorting connections must be less than 100 ohms in order to operate the control. The Bogen Remote Volume Control Panel (model RVCP) provides a simple and elegant means of remote control.
Master Mute
Two terminals are provided for invoking a Master Mute function.When the master mute terminals (1 & 2) are shorted through a resistance of less than 100 ohms, all audio from the mixer section of the PowerVector amplifier is interrupted. The power amplifier section is still operational under this condition. Terminal number 2 is at ground potential. The Signal/Clip LEDs will continue to show input activity while the master mute is engaged.
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