User manual CREST AUDIO VS SERIES

[. . . ] This symbol is used to alert the operator to follow important operating procedures and precautions detailed in documentation. This symbol is used to warn operators that uninsulated "dangerous voltages" are present within the equipment enclosure that may pose a risk of electric shock. Always operate the unit with the AC ground wire connected to the electrical system ground. Precautions should be taken so that the means of grounding of a piece of equipment is not defeated. [. . . ] If it will not stay on, the amplifier needs servicing. Two front panel mounting holes are provided on each mounting ear. A 110 CFM fan mounted behind the fan intake grill draws cooling air into the amplifier. This LED comes on when the input signal entering the amplifier channel is being amplified. This LED comes on at clipping point, and indicates that ACL (Active Clip Limiting) is engaged. The green Active LED indicates the amplifier is turned on. If either channel is in Protect mode, this LED will light. 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. Connection is made either to the Channel A and Channel B terminals (Stereo Mode), or across the red ("hot") terminals only of Channels A and B (Bridge Mode). Two input attenuators adjust level for their respective amplifier channels. In the bridged mode, both attenuators are used to control signal level; in addition, both must be at the same setting. Note: Unbalanced "Tip/Sleeve" plugs may be used with the balanced TRS connectors. This push-button switch configures the amplifier for either Stereo or Bridged Mono operation mode. Note: When connecting unbalanced inputs to the Barrier Strip inputs, make sure to jumper the negative terminal to the ground terminal. Otherwise, a 6 dB drop in signal level will result. Be sure not to block these ports, especially when rack-mounting the amplifier. V & Vs Series amplifier power requirements are rated at "idle", 1/8th power ("typical" music conditions), and maximum rated power. The maximum power current draw rating is limited only by the front panel circuit breaker. Consult the specifications at the end of this manual for the "typical" current that each amplifier will demand. Mains voltage must also be correct and 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. [. . . ] Note: When using threepole (`stereo') TRS connectors to connect unbalanced signals, make sure that the ring (negative) connection is made either to the cold (-) output of the source equipment, or to ground. Unbalanced, two-pole connectors may be used without modification. In Stereo Mode, one or both channels may be used. In the Bridged Mono Mode, both outputs are driven from Channel A's input; Channel B's input is unused. [. . . ]