User manual PEAVEY CS 3000G

[. . . ] 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. [. . . ] 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. 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. 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. The Peavey CS 3000G 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. For commercial and other installations, where sustained high power operation is required, the CS 3000G should be mounted in a standard 19" rack. It is not necessary to leave rack space between each amplifier in the stack, since the fan pulls air in from the rear and exhausts the hot air out of the front. However, an adequate COOL air supply must be provided for the amplifier when rack-mounted. The internal fan must have a source of air that is not preheated by other equipment. The amplifierwill start up in "Low Speed" fan operation, and will normallystayat low speed operation unless sustained high power operating levels occur. Then as the amplifier's "Heat Sinks" heat up, the automatic thermal sensing circuitry will cause high speed operation to occur. Depending on signal conditions and amp loading, high speed fan operation may continue or it may cycle continuously between high and low. Such systems require the use of 70 volt transformers at each loudspeaker. [. . . ] 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. [. . . ]