Lexicon CP-3 PLUS - THEORY AND DESIGN REV 2 Owner'S Manual Download Page 54 | Manualshive

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49

CP-3

PLUS

Digital Surround Processor

Troubleshooting

Troubleshooting

4

T

roubleshooting

If you encounter a problem, please review the items in the following
checklist. Also be sure to thoroughly check all other connected components
such as speakers, receiver/amplifier/preamp, VCR, TV, CD player, etc.

Problem

Possible Cause and Solution

Power does not come on

Check line cord to ensure good connection to the AC outlet and to the
receptacle on the CP-3

PLUS

rear panel. Check to make sure that the

CP-3

PLUS

rear panel power switch is ON.

Input level meters not functioning

Check to make sure that "LEVEL METERS" (in the DISPLAY ADJUST
sub menu of the Setup menu) is turned ON.
Make sure CP-3

PLUS

VOLUME is above -54dB.

Make sure that the correct input is selected.

No audio

Check input and output connections. They may be reversed relative to
the IN and OUT jacks of your receiver/amplifier/preamp or other
source.

Remote control not working

Check batteries to be certain that they are inserted correctly with proper
polarity. Make sure that the infrared sensor on the CP-3

PLUS

front panel

is not obstructed. Try using the other remote. If neither is working,
the problem is internal. See "If all else fails..." on the following page.

"Wrong remote" message

The CP-3

PLUS

recalls which remote (Standard or Expanded) was last

used to turn it on. Turn the CP-3

PLUS

off, then back on with the remote

you wish to use.

No output

Make sure that signal is coming into the CP-3

PLUS

by observing the Input

Level meters. Increase VOLUME using the remote control and check
Front/Back and Left/Right BALANCE.
Check the CP-3

PLUS

MUTE controls to make sure they are not engaged.

Check all other equipment settings and connections and verify that the
amplifiers being fed by the CP-3

PLUS

are operational.

Remember that the CP-3

PLUS

mutes the output to any speakers which are

not configured in the Setup menu. If speakers are added to (or removed
from) your system, the Speaker Configuration menu must be altered
accordingly.

Center Channel only plays

Check to see if your HiFi VCR has dropped out of tracking — readjust.
Your VCR Stereo/Mono/L-R switch may be in the wrong position —
set it to Stereo.

Muffled sound in L&R channels

When no center channel is used, CENTER must be configured for
NONE in the Configuration menu.

Center channel sound muffled

The center channel amp may be connected to the subwoofer jack on the
CP-3

PLUS

rear panel. Reconnect to Center Output jack.

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Summary of Contents for CP-3 PLUS - THEORY AND DESIGN REV 2

Page 1: ...Digital Surround Processor Owner s Manual CP 3 PLUS ...

Page 2: ... installation If this equipment does cause interference to radio or television reception which can be determined by turning the equipment OFF and ON the user is encouraged to try to correct the interference by one or more of the following measures Reorient the receiving antenna Relocate the computer with respect to the receiver Move the computer away from the receiver Plug the computer into a diff...

Page 3: ...ttävän korkea aiheuttamaan sähköiskuvaaran Norsk Viktig informasjon om sikkerhet Ta vare på denne veiledningen for senere bruk Følg alle anvisningene og advarslene som er angitt på apparatet Apparatet skal alltid anvendes med korrekt spenning Produktbeskrivelsen inneholder spesifikasjoner for strømkrav Vær oppmerksom på at det ved ulike driftsspenninger kan være nødvendig å bruke en annen ledning ...

Page 4: ...Gardez ces instructions pour réference future Observez toutes les instructions et tous les avertissements marqués sur l appareil Branchez uniquements sur un réseau de tension indiquée Consultez le manuel d instruction du fabriquant pour les spécifications de courant N oubliez pas que différentes tensions peuvent nécessiter l utilisation de cables et ou de fiches de connexion différents N installez...

Page 5: ...CP 3 PLUS Digital Surround Processor Owner s Manual ...

Page 6: ... Connecting the CP 3PLUS in a tape monitor loop Video Connections Calibration 18 LCD Adjustment The Video On Screen Display The Setup Menu Setting the Speaker Configuration Setting Input Levels Setting Output Levels Calibrating the Listener Position Setting Rear Delay Setting Center Delay Customization 30 Locking in Settings Custom Name Custom Modes Modifying the mode Automation 3 Using the CP 3PL...

Page 7: ...your eyes closed it is possible to get a good mental picture of the room or hall you are in by listening to the ambience or reflected sound energy in the room We are not aware of our auditory sense in everyday life because it confirms what our eyes identify as the environment When we listen to recorded music however there are no visual clues and we rely completely on our sense of hearing The intro...

Page 8: ... in the source material For films encoded with Dolby Surround Lexicon has incorporated the Lucasfilm Home THX Cinema processing into the CP 3 PLUS This utilizes a patented completely digital Dolby Pro Logic Surround decoder and is the only one with automatic correction of inter channel phase and channel balance errors the most common audio problems in currently available video releases of films A ...

Page 9: ...mean that the unit was turned on with the Standard remote Expanded operation refers to the Expanded remote Normal operation refers to modes for using as opposed to setting up the CP 3 PLUS An Installation worksheet is provided in Chapter 5 of the Owner s Manual for documentation of the settings arrived at during the calibration proce dure Once installation is satisfactorily completed you should ne...

Page 10: ... volume etc Register The CP 3 PLUS contains 45registers or memory locations where modes are stored Bank The CP 3 PLUS s 45 registers are organized into 3 banks of 15 Presets One bank of 15 registers is loaded with the modes which appear on the Expanded Remote These modes are presets which are perma nently initialized at the factory Presets appear on the display with their names and their numbers p...

Page 11: ...o 15 Preset modes and storage of as many as 30 of your own custom modes Although some users may continue to use the Expanded remote after installation and configuration is complete a second simpler remote con trol called the Standard remote is provided for everyday use This remote is designed to control some system parameters and to access only five modes of operation We have chosen names for thes...

Page 12: ...ttons are used to select which input is processed by the CP 3 PLUS Pressing any one of these buttons will select that input and light the LED above it The CP 3PLUS can be pro grammed to engage a spe cific operating mode for each input so changing inputs may change the mode being used See Auto Mode Load Page 24 2 Input Level Display The INPUT LEVEL display monitors the level in the CP 3PLUS s digit...

Page 13: ...onnector 4 Video In and Video Out The three video inputs are switched with their corre sponding audio inputs and fed to VIDEO OUT VIDEO OUT should be connected to a video input on your monitor for the On Screen display to work The CP 3PLUS will gen erate a blue background field if there is no video signal in the selected input If the CP 3PLUS is turned off via the front panel or either remote the ...

Page 14: ...igned for any sur round sound encoded mov ies music or television pro grams 4 On Off Turning the CP 3PLUS off with this button or the front panel ON OFF button deac tivates the unit while leaving power to the signal process ing circuitry to keep it at opti mum operating temperature The CP 3 PLUS uses this button s signal to differentiate between the remotes Therefore it is im portant that the CP 3...

Page 15: ... Levels BINAURAL 3 is for playback on loudspeak ers of recordingsmade witha dummy head microphone system The AMBIENCE modes 4 5 and 6 simulate concert halls of three dif ferent sizes generating re flectionsofappropriate direc tionality delay and spectral shape sending them to the side and rear speakers The Ambience modes provide adjustable recirculation through the Liveness pa rameter but for long...

Page 16: ...by the CP 3PLUS 8 Mutes MAIN MUTE turns off all out puts and lights both MAIN andEFXMUTELEDs Push ing EFX MUTE while in sys tem mute mode turns the effects alone back on EFX MUTE alternately turns off and on all signals added by the CP 3PLUS Use it to com pare the sound with and with out CP 3 PLUS processing or as a simple way to play nor mal two speaker stereo 9 Balance BALANCE The fourbalance bu...

Page 17: ...t it has an unobstructed path to the CP 3PLUS s IR receiver window The CP 3 PLUS may be placed in a glass doored cabinet but smoked glass will make the front panel Liquid Crystal Display LCD difficult to read and will reduce the sensitivity of the IR receiver Do not mount the CP 3 PLUS into walls or ceiling The CP 3PLUS is designed to be connected to an uninterrupted AC power line in the same mann...

Page 18: ... signal degradation and is not recommended For video connections please use only cables that are designed for video applications these have different impedance characteristics than cables approved for audio applications Both audio and video cables should be kept as short as possible In general speaker cables should be kept short and low impedance wire should be used throughout to assure efficient ...

Page 19: ...nector should be used to connect to both left and right audio inputs on the CP 3PLUS Many installations will have more than four sources in the system A preamp or A V switcher can handle the additional components and possibly add some additional dubbing capabilities A preamp has the advantage of a built in phono amp and many include decent tone controls as well The disadvantages include a redundan...

Page 20: ...our main stereo amplifier to the CP 3PLUS FRONT outputs Con nect any additional amplifier speaker combinations to the remaining outputs on the CP 3PLUS side amplifiers to the SIDE outputs rear amplifiers to the REAR outputs center channel amplifier to the CENTER output and the subwoofer amp to the SUB WOOFER output If you are using THX type dipolar surround speakers the amplifier driving them shou...

Page 21: ...oop to the CP 3PLUS However any change in the receiver s volume control after the system is adjusted will upset the balance between the main and auxiliary speakers Connection In this configuration use a Y connector to hook the VCR to Video 1 as well if its tuner is used instead of the TV tuner In this configuration select the TV s video input to see the CP 3PLUS s on screen display ...

Page 22: ...d so the CP 3PLUS need not be left on for example for simple TV viewing If the master power switch on the CP 3PLUS rear panel is turned off or if power is removed from the CP 3PLUS the unit will default to Input 1 for audio and video and will continue to pass that signal through to the output Connection NOTE The CP 3PLUS video inputs are designed for NTSC M composite video signals The video circui...

Page 23: ... E N U I N P U T S Press PARAM to step to the DISPLAY ADJUST menu then press PARAM The LCD will now read D I S P L A Y M E N U O S D P O S I T I O N Pressing PARAM twice will step to the following display D I S P L A Y M E N U L C D C O N T R A S T Pressing PARAM or will display L C D C O N T R A S T Press PARAM or until the contrast of the display is at a maximum as seen from your listening chair...

Page 24: ...ring normal operation Adjusting the position allows you to move the CP 3 display items to a location where they will not interfere with any other video overlays your system may generate The DISPLAY TIME option allows you to choose to have the on screen display always off always on or on for a two second duration Note that if you choose to have the display time out this will not affect the display ...

Page 25: ...characters available OFF P1 15 A1 15 B1 15 ON or OFF ON or OFF OSD POSITION DISPLAY TIME LCD CONTRAST LEVEL METERS DISPLAY ADJUST Bottom Center Top Always Off 2 sec timeout Always On continuously adjustable ON or OFF 80HZ HPF CENTER SIDES REARS SUBWFRS CONFIG MENU ON FULL THX TWO YES Factory default settings OFF SMALL STANDARD ONE NO NONE NONE NONE INTERNAL SOURCE EXTERNAL SOURCE OUTPUT MENU LEVEL...

Page 26: ...bass out of the center channel and directing it to the main left and right outputs Select NONE if there will be no center speaker in the system NOTE The center output is only active in the surround modes not in Panorama Ambience or Reverb Sides Select THX if THX type surround speakers are used for the sides Select STANDARD if any other type of speakers are used and NONE if there are no side speake...

Page 27: ...n be assigned a different input gain assuring optimum performance and consis tent volume regardless of the source selected The CP 3PLUS 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 inp...

Page 28: ...l settings Compact Disc player 03dB Multi Disc Combi player 06dB Video Disc player 06dB Cassette deck 03dB AM FM Tuner 06dB When you have selected an input level press STORE to save the setting and return to the Input Menu Follow this same procedure for each input You can assign a name up to 16 characters to each of the inputs This will identify the source whenever an input is selected In the Inpu...

Page 29: ... stored in User Register B we recommend selecting one of these five modes for Auto Mode Load The Input Auto Level function see discussion under Setting Input Levels is normally ON This can be defeated by using PARAM to move the cursor to select the AUTO LEVEL parameter then pressing PARAM twice Now pressing PARAM will turn this function ON pressing PARAM will turn it OFF Press STORE to save and re...

Page 30: ...s The Level sub menu choices are shown below Note that selecting INTERNAL SOURCE automatically disconnects all audio and video inputs and plays only one channel at a time EXTERNAL SOURCE allows all channels to be heard simultaneously If you are using an SPL meter use the C weighting with the meter response on SLOW From your listening position hold the meter at about ear level at arm s length to av...

Page 31: ...o the inputs of the subwoofer crossover Connect the subwoofer s 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 mid bass 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 c...

Page 32: ...ill be making Refer to the section on Panorama in the Theory Design booklet Find a mono source such as an announcer on FM radio or a mono film and listen for a tightly focused center image of speech or singing If the image is off center adjust the CP 3PLUS s BALANCE controls The more centered the monaural image the better Panorama will work CALIBRATE NOISE is a special digitally generated signal t...

Page 33: ...e in your right ear Push PARAM repeatedly until you return to the CALIBRATE LEFT ONLY display Press PARAM the display will read CALIBRATE NOISE CALIBRATE RIGHT ONLY Again shift your head from side to side to find the sweet spot this time looking for the point where the sound is strongest in your right ear Compare the locations of the two sweet spots by pressing PARAM to call up LEFT ONLY then pres...

Page 34: ...nd from the center speaker to reach you earlier than sound from the left and right Equalizing the path length the distance from the speaker to your ear of the three front speakers in your system will improve the image The CENTER DELAY parameter allows you to electronically time align the center channel with your main speakers The delay relative to the main left and right channels can be adjusted b...

Page 35: ...CKED message To lock the settings press SETUP and select LOCK SETTINGS With LOCK SETTINGS selected press PARAM twice to select the Lock Settings parameter and engage it To turn the lock off follow the same procedure but press the PARAM button instead of PARAM until the display reads SETTINGS LOCK OFF When the CP 3PLUS is first turned on it will display a copyright notice with the current software ...

Page 36: ... the Standard Remote Unless you are an incorrigible tweaker simply put the Expanded Remote away with its batteries removed for safe keeping When the CP 3PLUS is powered up via the Standard remote it will automati cally restrict itself to the five operating modes in User Bank B that corre spond to those listed on the remote These modes are stored in registers B2 B6 B11 B10 and B15 Since these modes...

Page 37: ...stored using the following procedure If you modify a Preset or the contents of any User register and want to make a copy of it press STORE The display will read STORE MENU STORE THIS MODE SET MODE NAME Press PARAM once and the display will read 12 letter mode name PUT PRO LOGIC IN A1 PAN NORM User reg Mode type Mode name 1st 3 letters 1st 4 letters The top line of the display will show the mode yo...

Page 38: ...press PARAM use PARAM and to set the second character and repeat until the new name is complete Press SETUP to return to the Store menu Use PARAM to select STORE THIS MODE then use PARAM and to step to the register where you want this mode stored Once you have selected a location press STORE Note that if you have renamed a Preset you must store the newly named mode in a User register in order to h...

Page 39: ...epending on which mode you want The CP 3PLUS should now be in the selected You Are Here mode and capable of responding to commands from a master programming remote Attempts to use the Expanded remote will fail and cause the Wrong Remote message to be displayed unless the unit is powered off then on again using the Expanded remote ...

Page 40: ...reset Bank and the two User Banks For example if you are running USER A 7 pressing BANK will switch to USER B 7 pressing BANK again will switch to PRESET 7 pressing it again will switch back to USER A 7 and so on The factory Preset modes are denoted by the label PRESET in the upper left of the display with the mode number beneath The mode title appears in the right half of the display with the mod...

Page 41: ...rgy is evenly distributed across the stereo image Panorama WIDE is designed for recordings with centered bass almost all pop and rock The only other difference between these two modes is their initial EFFECT LEVEL If you need more bass from Panorama NORMAL switch to WIDE and reduce the EFFECT LEVEL Conversely if Panorama WIDE is too bass heavy switch to NORMAL and increase the EFFECT LEVEL The loc...

Page 42: ...requency above which the rear channel sound is attenuated It should be high enough to give presence and airiness to the rear sound but not so high as to place distracting instrumental overtones or other sounds behind you The appropriate setting will vary with the program material REAR DELAY adjusts the amount of time between the appearance of a signal in the front channels and its emergence from t...

Page 43: ...oklet for a discussion of the properties of the two ROOM SIZE allows you to change the room size in fine graduations within the overall hall size you have selected For convenience the hall size is denoted by length in meters The LIVENESS parameter adjusts the amount of recirculation within the mode The higher the value the more reflective the surfaces of the simulated space and the longer the soun...

Page 44: ...the input is almost entirely attenuated SPEECH DETECT is a real benefit to some popular music where spoken voice such as rap occurs along with music stereo televi sion and early stereo movies Any stereo material which was not carefully mixed for Surround is a good candidate for playing through Ambience with SPEECH DETECT on SUB BASS BOOST boosts or cuts the subwoofer output level Although the norm...

Page 45: ...ra speakers individually audible Reverb MID RT Midrange Reverberation Time is the time required for midrange sounds to decay 60 dB in level Your choice of small medium or large synthesized space determines both the initial value and the available range of MID RT BASS RT the low frequency reverb time depends on the MID RT and is expressed as a multiplier BASS RT is equal to MID RT in SMALL mode 7 w...

Page 46: ...put is reduced while the stereo component is increased If the input signal is pure monaural speech the reverb effect is attenuated SPEECH DETECT is a real benefit to some popular music where spoken voice such as rap occurs along with music stereo television and early stereo movies TREBLE ROLLOFF as in the Ambience mode is preset to mimic air absorption in actual spaces being more pronounced in the...

Page 47: ...inning of each set of parameter descriptions Surround Parameters Television Off if center speaker configured as NONE BYPASS if center speaker configured as NONE or FULL 95 Hz if configured as SMALL Presets only Inaccessible if side speakers configured as THX or NONE EFFECT LEVEL controls the loudness of the front side and rear outputs SURROUND EFFECT The Stereophonic setting provides extraction of...

Page 48: ... you may find it desireable to increase or decrease this deep bass level REAR ROLLOFF sets the cutoff frequency of a low pass filter in the rear channel Frequencies above this setting are attenuated This control should be set high enough to give presence and airiness to the rear sound but not so high as to place distracting instrumental overtones or other sounds behind you The appropriate setting ...

Page 49: ... for this control will vary widely with source material BASS SPLIT takes the low bass from the center where it is in many film and music mixes and distributes it instead to the left and right front channel speakers Bass Splitting is valuable because in many video installations the center speaker is smaller than the two main stereo speakers and is less capable of handling the lowest frequencies By ...

Page 50: ...depending on the recording and your taste There is no correct setting HIGH PASS removes low frequencies from the center side and rear outputs This is particularly useful if you will be using the Full Range mode at high volume levels where the low frequencies might damage the smaller speakers SUB BASS BOOST boosts or cuts the subwoofer output level Although the normal subwoofer level was set during...

Page 51: ...orded with a much narrower and duller frequency response than current films MAIN LEVEL controls the level of the mono signal which is reproduced by the main speakers When there is a center speaker configured many films may sound better when this control is set between 6 12 This will spread the film sound out around the screen and can be more pleasant than restricting the dialog and much of the oth...

Page 52: ...e lowest frequencies By directing the low frequencies to the main speakers there is less risk of damage to a small center speaker and no loss of bass information since it will be reproduced by the main speakers SUB BASS BOOST boosts or cuts the subwoofer output level Although the normal subwoofer level was set during the initial calibration procedure with some recordings you may find it desireable...

Page 53: ...ic When it is on special patented algorithms continually monitor the input signal and adjust both the relative level and time offset of the two channels to keep the dialog properly centered and special effects properly localized This automatic feature is why the CP 3PLUS does not have or need an input balance control for Dolby Surround decoding BASS SPLIT takes the low bass from the center where i...

Page 54: ...other remote If neither is working the problem is internal See If all else fails on the following page Wrong remote message The CP 3PLUS recalls which remote Standard or Expanded was last used to turn it on Turn the CP 3PLUS off then back on with the remote you wish to use No output Make sure that signal is coming into the CP 3PLUS by observing the Input Level meters Increase VOLUME using the remo...

Page 55: ... generate minimal amounts of RF energy and is in or Cable TV compliance with FCC rules If some interfering noise is noted move AM loop and FM T type antennas away from the CP 3PLUS and reorient them as necessary Use shielded cable for FM and TV antenna feeds Erratic recall of modes Severe power surges or sags can confuse the CP 3PLUS memory To correct or if you simply want to start over restore th...

Page 56: ...d Remote control turn the CP 3PLUS OFF 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 3PLUS 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 res...

Page 57: ...entation 5 Installation Documentation Installation Documentation This section is provided for the documentation of values set during system setup and calibration The Setup menu selections are reproduced here for your convenience when filling out the worksheet ...

Page 58: ...12dB 16 characters available OFF P1 15 A1 15 B1 15 ON or OFF ON or OFF OSD POSITION DISPLAY TIME LCD CONTRAST LEVEL METERS DISPLAY ADJUST Bottom Center Top Always Off 2 sec timeout Always On continuously adjustable ON or OFF 80HZ HPF CENTER SIDES REARS SUBWFRS CONFIG MENU ON FULL THX TWO YES Factory default settings OFF SMALL STANDARD ONE NO NONE NONE NONE INTERNAL SOURCE EXTERNAL SOURCE OUTPUT ME...

Page 59: ... Gain settings _________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ Wiring comments Left Side _____dB _____________________ Subwoofer_____dB _____________________ Right Rear_____dB _____________________ Left Rear __...

Page 60: ...ocessed channels 10 Hz 100 kHz 1 3dB Ref 1 kHz Processed channels 10 Hz 18 kHz 1 3dB Ref 1 kHz Subwoofer 10 Hz 80 Hz 1 6dB Ref 31 5Hz 24dB octave rolloff THD All channels Less than 025 1 kHz max level Subwoofer Less than 025 10 100 Hz max level Signal to Noise Ratio 90dB minimum A weighted Ref 1 kHz max level Power Requirements 120 VAC 10 50 60 Hz 35W 100 220 240 VAC versions available 3 pin IEC d...

Page 61: ...Lexicon Part 070 09928 Printed in the United States of America Lexicon Inc 3 Oak Park Bedford MA 01730 USA Tel 781 280 0300 Fax 781 280 0490 ...

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