User manual PEAVEY CS 1800G

[. . . ] Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. CAUTION: To reduce the risk of electric shock, do not remove cover. WARNING: To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. Before using this appliance, read the operating guide for further warnings. [. . . ] MODE SWITCH (12) This switch is used to select either Stereo or Bridge mode operation. When BRIDGE mode is selected, the channel B LED power indicator will go out indicating Bridge mode has been selected. Accidental selection of this mode could damage loudspeakers. Bridge mode will be covered in more detail later in this manual. HIGH-Z INPUT JACKS (13) Two parallel (bridged) input jacks are provided for each channel. This allows for one to be used as a conventional input, and at the same time the other to be used as a "line out" (Y-cord) to connect to another input jack on this amplifier or other amps/equipment. These l/4" jacks are not "chassis grounded" and when used will provide a Quasi-Balanced input capability due to a unique "ground loop" elimination circuitry associated with the inputs. This feature will normally allow "hum free" operation when relatively short l/4" cable patches are made between the various jacks on this amp and other jacks on various other equipment that share the same rack with this amplifier. This Quasi-Balanced capability is automatic and cannot be removed from the system's circuitry. DDTTM COMPRESSION SWITCH (14) This switch is used to either ENABLE or DEFEAT the DDT compressor. The DDT function will be covered in more detail later in this manual. INSTALLATION AND CONNECTION The Peavey CS 1800G commercial series power amplifier is designed for durability in commercial installations and the quality of performance required in studio and home applications. the unit is a standard rack-mount configuration , 3-l/2" high and is cooled by automatic two-speed internal fans. All of the input and output connections are on the back panel. The front panel contains LED indicators for power and DDT activation, detented/calibrated sensitivity controls, and a mains power switch. INDUSTRIAL AND COMMERCIAL INSTALLATIONS For commercial and other installations, where sustained high power operation is required, the CS 1 SOOG should be mounted in a standard 19" rack. thus , the Bridge Rating is 1800 W RMS into 4 ohms (minimum load). Bridge mode operation is accomplished by placing the mode switch in the "BRIDGE" position, connecting the load between the RED binding posts of each channel, and using channel A as the input channel. All the channel B functions as an input are defeated and they serve no purpose in Bridge mode. A popular application for Bridge mode operation is to drive sound distribution systems in large public address applications. In this mode, the CS 1800G power amplifier can actually drive 70 volt systems directly without using expensive matching transformers. the real advantage of such an approach is primarily cost. [. . . ] Never break off the ground pin on the power supply cord. For more information on grounding, write for our free booklet "Shock Hazard and Grounding. " Power supply cords should always be handled carefully. Never walk or place equipment on power supply cords. [. . . ]