Peavey CS 1800G Installation and Connection, Industrial and Commercial Installations, Bridge Mode

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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. 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 amplifier will start up in “Low Speed” fan operation, and will normally stay at 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. This situation is quite normal.

If cooling is inadequate due to preheated air, or a reduction of air flow occurs due to blockage of the amplifier inlet/ outlet ports, or if the amplifier is severely overloaded or short circuited, then the amplifier thermal sensing system may cause temporary shutdown of that particular channel. This is indicated by the channel power LED on the front panel ceasing to illuminate. Depending on available cooling air, operation should be restored in that channel relatively quickly, and the power LED will be illuminated. In any event, corrective action should be taken to determine the cause of the thermal shutdown. If the amplifier is not severely overloaded or shorted, and air flow is normal in and out of the unit, then steps should be taken to provide a cooler environment for all the amplifiers. As a general rule, the cooler electronic equipment is operated, the longer its useful service life.

BRIDGE MODE

The bridge mode on stereo amplifiers is often misunderstood as to the actual operation and usage. In basic terms, when a two channel amplifier is operated in the Bridge mode, it is converted into a single channel unit with a Power Rating equal to the sum of both channel’s power ratings, and at a Load Rating of twice that of the single channel rating. In this case, the CS 1800G is rated at 900 W RMS per channel into 2 ohms. 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 chan- nel. 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 applica- tions. 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.

70 volt distribution systems are very common in applications where rather large numbers of relatively small loudspeak- ers are used for background music and paging. Such systems require the use of 70 volt transformers at each loud- speaker. Another common use for the Bridge mode is in subwoofer applications where very high power levels are required to adequately reproduce the extreme low frequencies. Such enclosures usually contain 2 or 4 loudspeakers to handle the power levels involved. For Bridge mode usage, the enclosure impedance must be 4 or 8 ohms; never below 4 ohms! Also make sure that the enclosure can handle 1800 watts reliably.

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Contents Page Page Cstm 1800G Features Ddttm Active LED Front Panel Features Channels a & B Input SensitivityPower LED Power SwitchBack Panel Back Panel FeaturesMains Power Source 6 120 V products only Ground Lift SwitchLOW-Z Input PL-2 Selector SwitchMode Switch Ddttm Compression SwitchIndustrial and Commercial Installations Installation and ConnectionBridge Mode Ddttm Compression Power Consumption Output Power typical valueRated Output Power Power Bandwidth typical valueCstm 1800G Flow Diagram Wiring Diagrams Page Funciones DE Tablero Frontal Canales a Y B Tablero Trasero Ground Lift Switch Interruptor levantamiento de tierraFunciones DEL Tablero Trasero LOW-Z Input Entrada de baja impedancia PL-2 Selector Switch Interruptor selector PL-2Mode Switch Interruptor de modo Speaker Outputs Salidas de altavocesINSTALACI6N Industrial Y Comercial Ddttm Compression Switch Interruptor de la compresih DdttmHIGH-Z Input Jacks Encbufes de entrada de alta impedancia INSTALACIdN Y CONEXI6NCOMPRESI6N Ddttm MOD0 DE PuentePage Canaux a ET B Speaker Outputs Sorties des baut-parleurs Ground Lift Switch Commutateur de sCparation de terreLOW-Z Input EntrCe Low-Z PL-2 Selector Switch Commutateur de sClection PL-2Mode Switch Commutateur de mode Ddttm Compression Switch Commutateur de compression DdttmInstallation Commerciale ET Industrielle Installation ET ConnexionMode Pont Compression Ddttm Cstm 1800G Features Beschreibung DER Frontplatte Kanal a UND B Speaker Outputs Lautsprecherausggnge Ground Lift Switch ErdabhebungsschalterLOW-Z Input Niederohmiger eingang Transformer Receptacle Transformatorbuchse PL-2 Selector Switch PL-2 WahlschalterMode Switch Modusschalter Ddttm Compression Switch DDTTM-KompressionsschalterAufstellung UND Anschluss DDTTM-KOMPRFSSIONJ Peavey ONE-YEAR Limited WARRANTY/REMEDY Important Safety Instructions =!!I~EK

CS 1800G specifications

The Peavey CS 1800G is a powerful and versatile professional power amplifier that is well-suited for a wide range of audio applications. Known for its robust construction and high-quality sound output, the CS 1800G stands out in the Peavey lineup, making it an ideal choice for touring musicians, DJs, and audio engineers alike.

One of the main features of the CS 1800G is its impressive power output, delivering 900 watts per channel at 4 ohms in stereo mode, and up to 1800 watts in bridged mono mode. This substantial power ensures that the amplifier can drive even the most demanding speakers while providing clear and dynamic sound reproduction across various performance settings.

The CS 1800G incorporates Peavey's proprietary TransTube technology, which enhances the amplifier's ability to provide warm, tube-like tones. This feature has been engineered to deliver a richer tonal character compared to many traditional solid-state amplifiers, giving performers and sound engineers more flexibility in crafting their sound.

In terms of its technical design, the CS 1800G comes equipped with advanced protection circuitry, ensuring the amplifier remains safe from overheating, short circuits, and other potential hazards that could affect performance. Additionally, the unit features comprehensive LED indicators that provide essential feedback on performance status, including signal presence and clip indicators.

The amplifier’s rear panel offers a variety of connectivity options, including balanced XLR and ¼-inch inputs, as well as Speakon and binding post outputs. This flexibility allows for easy integration into any audio system, making it suitable for both live sound applications and installation environments.

Weighing in at 22.4 pounds, the CS 1800G strikes a balance between portability and power, making it manageable for transport without compromising on performance quality. This durable build is complemented by a rugged metal chassis, designed to withstand the rigors of touring and professional use.

Overall, the Peavey CS 1800G is a reliable and powerful amplifier that combines cutting-edge technology, robust performance, and user-friendly features, making it a top choice for anyone in search of high-quality audio amplification. Whether for concerts, events, or permanent installations, the CS 1800G delivers the performance and flexibility needed for diverse audio needs.
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