Bogen & V250 Remote Volume Control, Pre-EQOutput, Signal-ProcessingInserts, COM and GND Terminals

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 transformer-coupled speaker output to work, one of the speaker load leads must be connected to this terminal. The GND terminal is a connection to the system’s electrical ground and used when driving loads in the Direct Out mode.

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 conditions where a ground connection is undesirable. It is generally a good idea 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 on the front panel. This control is motorized, allowing full con- trol 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 counter- clockwise direction and decrease the level of the MasterVolume 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. Alternatively, a SPDT spring-loaded, center off switch or two SPST push-button switches can provide the necessary contacts for remote control.

Pre-EQ Output

An unbalanced RCA connector provides a buffered signal level output for use by external equipment. This output signal includes all internal signal processing, including master volume control, output modules processing, tone controls, and low-cut filtering. It does not include any external signal processing that may be provided through the Signal-Processing Inserts.

Signal-Processing Inserts

A set of unbalanced RCA connectors provides a means to insert external signal-processing equipment between the output of the Power Vector Amplifier’s mixer section and its power amp section. The RCA connector labeled OUT provides a signal from the amplifier’s mixer section. This output signal encompasses all internal signal processing, including master volume control, output modules processing, tone controls, and low-cut filtering.The connector labeled IN provides an input to the amplifier’s power amplifier section. The internal connection between the amplifier’s mixer section and power amp section is automatically broken whenever an RCA plug is inserted into the IN connector.

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