Peavey CS 400x - Mains Power Source and Installation; Mains Power Source (120 V Products Only); Installation and Connection; Industrial and Commercial Installations

MAINS POWER SOURCE (120 V Products Only) (22)
The CS-400X is fitted with a single heavy duty #14 AWG 3 conductor line cord and a conven¬
tional AC plug with a ground pin. ft should be connected to an independent mains circuit
capable of supporting at least 1 5 AMPS continuously or greater. This is particularly critical for
sustained high power applications. If the socket used does not have a ground pin, a suitable
ground lift adaptor should be used and the third wire grounded properly. Never break off the
ground pin on the CS-400X. The use of extension cords should be avoided, but if necessary,
always use a three-wire type with at least a #14 AWG wire size. The use of lighter wire will
severely limit the power capability of this amplifier. Always use a qualified electrician to install
any necessary electrical equipment. To prevent the risk of shock or fire hazard, always be sure
that the amplifier is properly grounded.
INSTALLATION AND CONNECTION:
The Peavey CS-4O0X commercial series power amplifier is designed for durability in commer¬
cial installations and the quality of performance required in studio and home applications. The
unit is a standard rack-mount configuration, 5 1/4" high, and is cooled by an automatic two-
speed internal fan. All the input and output connections are on the back panel. The front panel
contains LED indicators for power and DDT activation, detented/calibratcd sensitivity controls,
and a mains power switch.
INDUSTRIAL AND COMMERCL\L INSTALLATIONS
For commercial and other installations, where sustained high power operation is required, the
CS-400X should be mounted in a standard 19" rack. It is not necessaiy 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 the front. 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 equip¬
ment. 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
"HEAT SINKS" heat up, the automatic thermal sensing circuitry will cause high speed opera¬
tion to occur. Depending upon 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 upon available cooling air, operation should be restored in that channel
relatively quickly, and die 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, 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 sendee life.
STUDIO AND HOME INSTALLATION:
In most low to medium power applications, the CS-400X can be mounted in any configuration.
It is desirable, if at all possible, that the unit be located at the top of an equipment stack. This
will prevent possible overheating of any sensitive equipment by the hot air rising from the
power amplifier. As a general rule, most home and studio requirements will never cause high