User manual PEAVEY CS 1000

[. . . ] 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. A A Este simbolo tiene el proposito de alertar al usuario de la presencia de "(voltaje) peligroso" que no tiene aislamiento dentro de la caja del product0 que puede tener una magnitud suficiente coma para constituir riesgo de corrientazo. Este simbolo tiene el propdsito de alertar al usario de la presencia de instruccones importantes sobre la operation y mantenimiento en la literatura que viene con el producto. PRECAUCION: Riesgo de corrientazo ~ No abra. PRECAUCION: Para disminuir el riesgo de corrientazo, no abra la cubierta. [. . . ] In order to complete the system, external patching must be accomplished between the low and high crossover outputs and the various power amp inputs using shielded patch cords. A patch diagram showing this arrangement is included at the end of this manual. BIAMP MONO MODE Obviously, for a monaural biamp system (only one mixer feed), only one crossover module is required and only one crossover island will be used. In this case, one channel of the CS 1000 can be patched for the lows and the other channel patched for the highs, resulting in a simple, compact system with outstanding performance. CAUTION: Since the CS 1000 is capable of producing more than 500 watts RMS per channel into a 4-ohm load, the high-frequency components of the particular loudspeaker system must be able to handle these power levels reliably. Alternatively, use a smaller power amplifier!BRIDGE MODE Diagram 4 shows the actual arrangement for the CS 1000 patch panel in the bridge mode. Notice that the jumper plugs are inserted in the transformer (12) and crossover (14) accessory sockets of Island A. These jumper plugs cause the XLR connector of this island to be wired in the unbalanced configuration (as in Diagram 1) and complete the connection to the Channel A power amp input jacks (which are now the only active inputs). The Channel A sensitivity control now determines the sensitivity of the bridge-mode amplifier. The Channel B input jacks and sensitivity control serve no purpose in this mode, and are actually electronically removed from the circuit. We have determined through much research that the compression circuitry should prevent the power amplifier from running out of headroom (clipping) and should be as simple to operate as possible to avoid undue complication for the user. This compression system is activated by our exclusive DDT compression circuitry, which senses conditions that might overload the amplifier and activates compression when clipping is imminent. In other words, compression takes place whenever signal conditions exist that prevent the amplifiers from faithfully reproducing the input signal. In this case, threshold is clipping itself, and no specific threshold control is provided. This technique effectively utilizes every precious watt available from the power amplifier. Techniques using external compressors/limiters are usually less effective, severely limit output power levels and require additional controls, and add complexity to an already complicated system. The DDT system is an automatic, hands-off approach to the problem of amp clipping. Because of the dynamics of music and vocals, it is quite common to activate the DDT compression circuitry almost constantly during a high-level performance, since this is what it was designed to do: i. e. , to maximize the dynamics available from the amplifier within its power-output capabilities regardless of power supply/AC line voltage variations and load impedance selection. Defeating the DDT compression should be very carefully considered before one just "flips the switch. " Most loudspeaker systems simply cannot handle the square wave power of the CS 1000, and defeating the DDT system opens up the door for severe clipping!13 Often studio engineers feel the need to defeat the DDT compressor, for fear it might color the sound in studio listening. The DDT compressor is only activated when clipping is imminent. [. . . ] This product should not be placed near a source of heat such as a stove. radiator, or another heat producing amplifier. Connect only to a power supply of the type marked on the unit adjacent to the power s~~pply cord. ~7 Never break off the ground pin on the power supply cord. [. . . ]