Yamaha CP2000 Owner's Manual - Page 6

2 Chapter 1-Introduction Front Panel POWER TEMP PROTECTION POWER ON OFF 67 POWER AMPLIFIER 20 15 L CLIP R 20 15 25 10 25 10 30 LEVEL 30 6 6 40 3 40 3 0 L -dB 0 R 1 234 5 A POWER switch This is the main POWER switch. Press to turn on the amplifier; press again to turn off. See "Turning On the Power" on page 11 for more information. B POWER indicator This indicator lights up when the CP2000 is turned on. C PROTECTION indicator This indicator shows the status of the protection system. See "Protection System" on page 11 for more information. D TEMP indicator This indicator lights up if the temperature of the CP2000's heatsinks exceed 85 degrees Celsius. Note that this indicator only serves as a warning. It does not indicate operation of the protection system. E Level controls These controls are used to adjust the volume level of each channel. Since the gain of each amplifier channel is fixed, these controls work by attenuating the input signal from between -∞ dB and 0 dB. They are detented controls, which means they can be set to any one of 31 positions. Detents protect against accidental adjustment, allow repeatable setting, and make it easy to set both channels to the same volume. Usually these controls are set to maximum and volume levels are controlled from the source equipment, typically a mixer. F CLIP indicators These indicators light up when a channel's output signal distortion exceeds 1% (i.e., clipping). Output signal clipping is usually due to excessive input signal levels. If a channel's output signal does clip, that channel's limiter circuit is activated to prevent further signal distortion. It's okay for a CLIP indicator to light occasionally, but if it lights frequently, the LEVEL control should be turned down a little. G LEVEL indicators These indicators show the output signal level of each channel. The green indicators light up when the output voltage is 2 V or greater, while the yellow indicators light up when it's 20 V or greater. CP2000-Owner's Manual