User manual PEAVEY CS 400X

[. . . ] WARNING: When using electrical products, basic cautions should always be followed, including the following: Do not use this apparatus near water. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. [. . . ] Although the CS 3000/4000/4080 HZ amplifiers have RampUpTM circuitry, which raises the signal level gradually after the output relay closes, it is always a good idea to have the gain controls turned down during power-up to prevent speaker damage if there is a high signal level at the inputs. Consult the Wire Gauge Charts (page 9) to determine proper gauges for differing load impedances and cable lengths. Cable resistance robs amplifier power in two ways: power lost directly to resistance (I2R loss) and by increasing the impedance of the load presented to the amplifier, thereby decreasing the power demanded of the amplifier. The inputs are actively balanced and the overload point is high enough to accept the maximum output level of virtually any signal source. connecting Outputs All models have two output (speaker) connections per channel. Cables can be connected with banana plugs, spade lugs or bare wire to the five-way binding posts. Connecting Power CS Series amplifier power requirements are rated at 1/8 power (typical music conditions) and 1/3 power (extreme music conditions). The maximum power current draw rating is limited only by the front panel circuit breaker. consult the specifications in the Appendices section for figures on the current that each amplifier will demand. Unless otherwise specified when ordered, Peavey amplifiers shipped to customers are configured as follows: North America South America 120VAC / 60Hz 230/240VAC / 60-50Hz 120VAC / 60Hz or 240VAC / 50Hz Europe, Asia, Australia - Note: Always turn off and disconnect the amplifier from mains voltage before making audio connections. Stereo Operation For stereo (dual channel) operation, turn the amplifier OFF and set the mode select switches on the back panel to the out (extended) position. This is useful in determining whether a signal is reaching and being amplified by the amplifier. If the Signal LED is illuminated but no sound is present, that means a signal is present at the amplifier but a problem may exist after the amplifier, such as in the cables or speakers. dDT LED (3) A channel's DDT LED will illuminate at the onset of clipping. If the LEDs are flashing quickly and intermittently, the channel is just at the clip threshold, while a steady, bright glow means the amp is clip limiting, or reducing gain to prevent severely clipped waveforms from reaching the speakers. The Peavey CS® Series incorporates several circuits to protect the amplifier and speakers under virtually any situation. Peavey has made the amplifiers as foolproof as possible by making them immune to short and open circuits, mismatched loads, DC voltage and overheating. When a problem occurs that causes a channel to go into a protection mode, the PWR (Power) LED for that channel will turn off. dC voltage on the output or excessive subsonic frequencies will cause the speaker protection relay for that channel to open , protecting the speakers. If an amplifier channel overheats, the relay for that channel will open, disconnecting the load until the channel cools down, thus protecting the amplifier. Distortion Detection Technique Limiting Any time a channel is driven into hard, continuous clipping, the DDT circuit will automatically reduce the channel gain to a level just slightly into clipping, guarding the speakers against the damaging, high-power, continuous square waves that may be produced. Situations that may activate the DDT circuit include uncontrolled feedback, oscillations, an improper equipment setting or malfunction upstream from the amplifier. [. . . ] Many loudspeakers can be easily damaged or destroyed by overpowering, especially with the high power available from a bridged amplifier. Read the Speaker Protection section and always be aware of the speaker's continuous and peak power capabilities. In the unlikely event that your amplifier develops a problem, it must be returned to an authorized distributor, service center or shipped directly to our factory. To obtain service, contact your nearest Peavey Service Center, Distributor, Dealer, or any of the worldwide Peavey offices. [. . . ]