Yamaha CP2000 Owner's Manual - Page 15

Connecting S115 and S112 loudspeakers 11 Connecting S115 and S112 loudspeakers The CP2000 features special EQ processing that opti- OFF ON mizes the CP2000 for use with the Yamaha S115 and S112 loudspeakers (especially the 115IV). This processing is turned on and off by using the YAMAHA YAMAHA SPEAKER PROCESSING SPEAKER PROCESSING switch. Yamaha loudspeakers should be connected just like any other speaker, and for best performance the YAMAHA SPEAKER PROCESSING switch should be set to ON. When using other speakers, make sure the YAMAHA SPEAKER PROCESSING switch is set to OFF. Turning On the Power To prevent audible thumps and clicks, turn on your audio equipment in the POWER following order (reverse this order when turning off your equipment)-sound sources, mixer, CP2000. 1 Press the [POWER] switch to turn on the CP2000. The CP2000 starts up and the POWER indicator lights up. ON OFF The output relay closes, connecting the speakers, several seconds after the CP2000 is turned on. 2 Press the [POWER] switch again to turn off the CP2000. The POWER indicator goes out. The output relay opens, disconnecting the speakers, immediately the CP2000 is turned off. Protection System The CP2000 features a relay-based protection system to protect itself and the connected speakers against damage due to abnormal operating conditions. When the protection system is active, the speakers are disconnected from the CP2000 and the PROTECTION indicator lights up. PROTECTION When the CP2000 is turned on, the output relay remains open, disconnecting the speakers, for approximately three seconds. During this time, the PROTECTION indicator lights up. When the protection system has confirmed that no abnormal conditions exist, the output relay closes, connecting the speakers, and the PROTECTION indicator goes out. In addition to allowing the protection system to perform various checks, protects the speakers against thumps and clicks as the CP2000 starts up. When the CP2000 is turned off, the output relay opens immediately, disconnecting the speakers, and preventing unwanted sound as the CP2000 shuts down. If during normal operation the protection system detects that a heatsink has overheated or a DC offset is present at a speaker output, the output relay opens, disconnecting the speakers, and the PROTECTION indicator lights up. Once the heatsink has cooled down, or the DC offset removed, the protection system automatically closes the output relay, reconnecting the speakers, the PROTECTION indicator goes out, and normal operation is resumed. Heatsink overheating is typically caused by inadequate ventilation and it's important that you investigate the cause and resolve it (see page 13 for more information). Another layer of protection is offered by the thermostatic cutout (auto-reset type) built into the CP2000 power supply transformer. If abnormal operating conditions, such as a shorted load or overload, continue for a long period of time, the thermostatic cutout CP2000-Owner's Manual