User manual CREST AUDIO CC

[. . . ] 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. [. . . ] If a heat sink gets too hot, its sensing circuit will open the output relay, disconnecting the load from that particular channel. The CC 1800 utilizes one common heat sink and a single fan, but retains the separate circuitry. It is important to have an adequate air supply at the back of the amplifier and enough space around the front of the amplifier to allow the cooling air to escape. If the amp is rack mounted, do not use doors or covers on the front of the rack; the exhaust air must flow without resistance. If you are using racks with closed backs, use fans on the rear rack panel to pressurize the rack and ensure an ample air supply. Make certain that there is enough space around the front and rear of the amplifier to allow the heated air to escape. Suggestion: In racks with closed backs allow at least one standard-rack-space opening for every four amps. Make sure the mains voltage is correct and is the same as that printed on the rear of the amplifier. Damage caused by connecting the amplifier to improper AC voltage is not covered by any warranty. Although the CC Series amplifiers have AUTORAMPTM 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. Whether you buy or make them, use good-quality connections, input cables and speaker cables, along with good soldering technique, to ensure trouble-free operation. most intermittent problems are caused by faulty cables. Consult the Wire Gauge Charts to determine proper gauges for different load impedances and cable lengths. Remember that 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. Always turn off and disconnect the amplifier from mains voltage before making audio connections. Also, as an extra precaution, turn the attenuators down during power-up. The input overload point is high enough to accept the maximum output level of virtually any signal source. Cables can be connected with banana plugs, spade lugs, or bare wire to the five-way binding posts. Hazardous energy may be present in the enclosure when the power switch is in the off position. If the switch shuts off during normal use, push it back to the ON position once. If it will not stay on, the amplifier needs servicing. For parallel (dual-channel/single input) operation, turn the amplifier off and set the mode switch in the parallel position; both amplifier channels are then driven by the signal at channel A's input. [. . . ] 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 for service. To obtain service, contact your nearest Crest Audio Service Center, Distributor, Dealer, or any of the worldwide Crest Audio offices. For those with Internet access, please visit the Crest Audio web site. [. . . ]