User manual LEXICON CP-3PLUS

[. . . ] Owner's Manual CP-3 PLUS Digital Surround Processor Precautions Save these instructions for later use. Follow all instructions and warnings marked on the unit. Always use with the correct line voltage. Refer to the manufacturer's operating instructions for power requirements. [. . . ] Despite industry attempts at standardization, there is still a wide disparity of output levels among different sources. For example, Compact Discs are often as much as 10-15dB higher in level than video discs. To compensate for this, each of the four inputs on the CP-3PLUS can be assigned a different input gain, assuring optimum performance and consistent volume, regardless of the source selected. The CP-3 PLUS can also be set to monitor the input level and automatically optimize the input gain. The level is changed from the auto level to the manual level whenever the CP-3PLUS is powered up, or when a new input is selected. When the input button for the currently active input is pressed, the current auto level is displayed. If the same button is pressed again, the input will be set to its manual level. The auto-level system can be defeated for special situations. Note: When calibrating the input levels, set the system volume to -25dB or higher to ensure optimum meter accuracy. You may engage the System Mute if you do not want to hear the input. Adjusting Input Parameters To adjust the input parameters for any of the four inputs, select the input, then press the SETUP button on the remote to call up the main Setup menu. The cursor will be at "INPUTS". (If it is not, select it with PARAM. ) Press PARAM v or w. The display will show: Select the input you want to adjust by pressing the appropriate input select button at the bottom of the remote. The display will read: SET INPUT(X) GAIN MAN+00 AUTO+00dB 22 CP-3 PLUS Digital Surround Processor Calibration The PARAM v and w buttons increase or decrease the input gain for the input you have selected over a range of -18dB to +12dB. Your setting is displayed(in dB) as the MAN (manual) setting. The AUTO setting shows the optimum input level as determined by the CP-3PLUS . If the manual level is set too high, causing input overload, the input level will automatically decrease to the point at which it is no longer causing overload. You can observe this in action by pressing PARAM v until the manual and automatic gain settings are both at +12dB, then play a reasonably loud selection (typically on CD) into this input. You will notice that, while the MAN setting will remain at +12dB, the AUTO setting will decrease until the input is no longer causing distortion. This is an excellent way to determine the optimum setting for the input level. Observe the value of the AUTO setting with a variety of program material and set the MAN gain a few dB above the AUTO setting by pressing PARAM v two or three times. All values are referenced to true clipping, which is 00dB. Values shown are the minimum required to light the LEDs. [. . . ] The display will flash an INITIALIZING message then read: * RESTORED ALL * SETUP TO EXIT Press SETUP to resume normal operation. All of the adjustable parameters in the CP-3PLUS have now been reset to the values assigned when it cleared final Quality Control at the factory. Using the values notated on the Installation Worksheet at the end of this manual, follow the initial setup procedure starting on Page 18. Restoring Defaults If you cannot solve functional problems through these procedures, consult your dealer or Lexicon/Customer Service Department. DOING SO WILL VOID YOUR WARRANTY, AND MODIFICATIONS MAY RENDER THE UNIT UNSERVICEABLE. 51 CP-3PLUS Digital Surround Processor Documentation Documentation Installation Documentation Installation Installation 5 This section is provided for the documentation of values set during system setup and calibration. [. . . ]