User manual LEXICON CP-3 REV 1

[. . . ] Owner's Manual CP-3 Digital Surround Processor Lexicon Unpacking and Inspection After unpacking the CP-3, save all packing materials in case you ever need to ship the unit. Thoroughly inspect the CP-3 and packing materials for signs of damage. Remove the adhesive protective film from the CP-3 frontpanel lens. Report any shipment damage to the carrier at once; report equipment malfunction to your dealer. Precautions This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. [. . . ] Now use PARAM v and w to raise or lower the output level of the speaker until the meter reads 75dB. Press PARAM to select the next channel specified in the Configuration menu and continue in this manner through all the channels. Be sure to record the values on the Installation Worksheet provided at the end of this manual. Press SETUP to save the settings and return to the Setup menu. PAL and SECAM NOTE: Because the CP-3 is not capable of generating PAL or SECAM composite video signals by itself, during INTERNAL NOISE generation (when all inputs are turned off) users with PAL or SECAM TVs will have to rely on the LCD when adjusting Output Levels. 25 Calibration Lexicon In the absence of an SPL meter, it is possible to set the output level by ear. Use the built-in signal generator in the CP-3 to adjust all volumes to be the same as they cycle around the various speakers. Depending on timbre variations between your speakers, this may be difficult to judge, get as close as you can. The system should be reasonably well balanced, although not actually calibrated for precise playback level matching. With the system volume at 0dB, the internal noise source should be at the same level at which film dialog sounds comfortable. NOTE: If the CP-3 is connected in the tape monitor or signal processorloop of a preamp, integrated amp, or receiver, or if any of the amplifiers used in the system have gain (volume) controls, the level settings on them will affect the balance of the CP-3 outputs. Generally, the gain controls of these amps should be set at or near maximum. You should record the values of these controls on the Installation Worksheet provided at the end of this manual for later reference. Subwoofers The SUBWOOFER output is created by summing the left and right inputs, then filtering out frequencies above 80Hz at a rate of 24dB per octave. For the tragically technical, this is a Linkwitz-Riley LPF -6dB @ 80Hz. Many of the better subwoofers have their own crossover (complementary low and high pass filters) and amp built in. With these, it is often better not to use the CP-3 SUBWOOFER output which has already been filtered. Instead, connect the CP-3 main (FRONT) left and right outputs to the inputs of the subwoofer crossover. Connect the CP-3 SUBWOOFER output to the amplifier driving the main speakers. This has the advantage of bi-amping: all the low bass is handled by the subwoofer; the main speakers handle only midbass and up (usually resulting in better-sounding main speakers). If you want to run the main speakers full range, the sub can be wired in parallel to the main amp using a Y-connector. Be sure to turn the 80Hz HPF in the Speaker Config menu to OFF. Since the center channel will now be running full range, select SMALL center in the Speaker Config menu. This turns on the BASS SPLIT parameter in the Preset modes, splitting low frequencies off the center channel and feeding them to the left and right front outputs. Remember to adjust this parameter in any User registers you program, as it is initially set to BYPASS. [. . . ] Turn the unit back ON and press the SETUP button within two seconds. (Make sure you do not block the infrared receiver on the CP-3 front panel. ) Continue holding down SETUP until the display reads: * RESTORE MODE * SETUP TO EXIT (If you want to resume normal operation without restoring all defaults, this is your last chance. Release SETUP and press SETUP again to resume normal operation. ) To restore defaults, release SETUP and press STORE to clear and reload User registers, and to restore all factory settings of Volume, Balance, Contrast, Configuration, etc. The display will flash an INITIALIZING message then read: * RESTORED ALL * SETUP TO EXIT Press SETUP to resume normal operation. [. . . ]