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Lexicon MC-12 manual

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Table of contents for the manual

  • Page 1

    MC-12 Contr oller Ve r sion 4 EQ User Guide[...]

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    [...]

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    3 Oak Park Bedford, MA 01730-1413 USA Te l 781-280-0300 Fa x 781-280-0490 www .lexicon.com Customer Service Te lephone 781-280-0300 Sales F ax 781-280-0495 Service Fax 781-280-0499 email csupport@har manspecialtygroup.com Product Shipments 16 Progress Road Billerica, MA 01821-5730 USA Lexicon P ar t No. 070-15993 | Rev 0 | 05/04 Manufactured under [...]

  • Page 4

    Introduction Lexicon ii ii Represents a menu path. The menu items in gra y bo xes m ust be selected with the ri ght arrow b utton to access the menu or menu item in the b lack bo x. F or instance, the SETUP , INPUTS, and D VD1 menu items must be selected to open the D VD1 INPUT SETUP menu. The D VD1 input is used here as an example , and will conti[...]

  • Page 5

    Introduction MC-12 V ersion 4 EQ iii Section 1: Understanding Room Equalization Loudspeaker Sound in a Room . . . . . . . . . . . . . . . . . . . . . . . 1-2 Room Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Surround Sound Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Sec[...]

  • Page 6

    [...]

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    1 Understanding Room Equalization Loudspeaker Sound in a Room. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Room Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Surround Sound Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6[...]

  • Page 8

    Understanding Room Equalization 1-2 Lexicon MC-12 Controller UNDERST ANDING ROOM EQUALIZA TION Sections one and two of this document explain the conditions that create the need for room equalization, how the MC-12 can com- pensate for room variances, and how to properly set up the micro- phones to run equalization tests. The theoretical material in[...]

  • Page 9

    Understanding Room Equalization 1-3 V ersion 4 EQ User Guide feet, so it will be scattered by any person (or object bigger than 1 foot) in the room. The strength of reflections also depends on the transmission properties of the reflector . For example, depending on its size and stiffness, a wall may have its own resonant frequency . This can happen[...]

  • Page 10

    Understanding Room Equalization 1-4 Lexicon MC-12 Controller The low frequencies tend to behave in predictable ways because the bass wavelengths are larger than the typical objects in a room. The mid and high frequencies generally behave differently from room to room because the foot-by-foot or inch-by-inch details dif- fer dramatically from room t[...]

  • Page 11

    Understanding Room Equalization 1-5 V ersion 4 EQ User Guide ROOM MODES Room modes are resonances that occur when low frequencies rein- force each other as they reflect back and forth between the hard boundaries of the room. The size of the room determines at which particular frequencies it resonates. Room modes can cause the sub- woofer to sound v[...]

  • Page 12

    Understanding Room Equalization 1-6 Lexicon MC-12 Controller Room modes affect the frequency response you hear in several ways. The most pronounced effect of room modes is to make cer- tain frequencies too loud. Y ou can correct this to some degree with an equalizer . Strong resonances have an additional feature: those frequencies linger on. When a[...]

  • Page 13

    Understanding Room Equalization 1-7 V ersion 4 EQ User Guide close to you, its sound will arrive at your ears approximately 5 mil- liseconds too early . The surround processor distance settings allow the surround sound system to delay the sound from each speaker just enough to realign them all to each other . Levels must also be balanced because a [...]

  • Page 14

    Understanding Room Equalization 1-8 Lexicon MC-12 Controller work perfectly for everyone if one or more seats are too far away from the “average” position. Any compromise to accommodate remote seats will degrade the audio for everyone. Figure 1-9. If system is optimized for the remote corner seat, the audio will be degraded for all. Remote Seat[...]

  • Page 15

    2 Configuring the MC-12 for V4 EQ About Automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Connecting the Microphones . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Positioning the Microphones for the Microphone Check . . . . . . . . 2-6 Performing the Microphone Check . . . . . . . . . . . . . . . . . . . [...]

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  • Page 17

    Configuring the MC-12 for V4 EQ 2-3 V ersion 4 EQ User Guide ABOUT AUTOMA TIC CALIBRA TION When running the V4 EQ software, the MC-12 offers automatic calibration of the listening room’ s bass response, loudspeaker distances, and loudspeaker output levels. A successful microphone check is requir ed before automatic calibration pr ocedures can be [...]

  • Page 18

    Description Procedure Configuring the MC-12 for V4 EQ 2-4 Lexicon MC-12 Controller CHECK MICROPHONES EQ DIST ANCES LEVELS ROOM EQ DIST ANCES OUTPUT LEVELS Examines the microphones connected to the rear panel microphone input connectors.  Confirms that the microphones are properly connected and functioning.  Calculates an average microphone le[...]

  • Page 19

    Configuring the MC-12 for V4 EQ 2-5 V ersion 4 EQ User Guide CONNECTING THE MICROPHONES Automatic calibration requires the microphones included in the Lexicon Microphone Kit , which is available at authorized Lexicon dealers. Performing automatic calibration with other microphones will produce unknown r esults. • The microphones inc luded in the [...]

  • Page 20

    POSITIONING THE MICROPHONES FOR THE MICROPHONE CHECK Proper microphone placement is essential to achieve the desired automatic calibration results. Refer to the microphone placement examples that begin below to properly position the microphones for the microphone check. Configuring the MC-12 for V4 EQ 2-6 Lexicon MC-12 Controller The microphones SH[...]

  • Page 21

    Configuring the MC-12 for V4 EQ 2-7 V ersion 4 EQ User Guide IMPROPER The microphones SHOULD NOT be positioned:  in separate locations  in locations scattered throughout the listening room  in an obstructed line-of-sight path with the loudspeakers  in a location obstructed by furniture and other fixtures  within 2 feet (0.61m) of lou[...]

  • Page 22

    Configuring the MC-12 for V4 EQ 2-8 Lexicon MC-12 Controller PERFORMING THE MICROPHONE CHECK 1. Open the SPEAKER SETUP menu as shown above. 2. Press the  and  arrow buttons to highlight the CHECK MICROPHONES procedure. Then, press the  arrow button to begin this procedure. 3. The CHECK MICROPHONES screen (shown above) opens on the on-scree[...]

  • Page 23

    Configuring the MC-12 for V4 EQ 2-9 V ersion 4 EQ User Guide The CHECK MICROPHONES results screen (shown to the right) opens on the on-screen display when the MC-12 finishes checking the microphones. This screen provides the results for each microphone. (The MC-12 refers to the microphones as 1, 2, 3, and 4 based on the microphone input connector t[...]

  • Page 24

    Configuring the MC-12 for V4 EQ 2-10 Lexicon MC-12 Controller REPOSITIONING THE MICROPHONES FOR AUTOMA TIC CALIBRA TION Proper microphone placement is essential to achieve the desired automatic calibration results. Microphone placement determines whether the MC-12 calibrates optimal results for a single listening position; several listening positio[...]

  • Page 25

    Configuring the MC-12 for V4 EQ 2-11 V ersion 4 EQ User Guide The microphones SHOULD be positioned:  as close together as possible in a single listening position (the primary listening position)  at the approximate spot where the listener’ s head will be during listening  in a clear line-of-sight path with all loudspeakers  in a locat[...]

  • Page 26

    Configuring the MC-12 for V4 EQ 2-12 Lexicon MC-12 Controller The microphones SHOULD be positioned:  across a single row of listening positions  at the approximate spots where the listeners’ heads will be during listening  in a clear line-of-sight path with all loudspeakers  in a location unobstructed by furniture and other fixtures ?[...]

  • Page 27

    Configuring the MC-12 for V4 EQ 2-13 V ersion 4 EQ User Guide The microphones SHOULD be positioned:  in single listening positions within the listening room  at the approximate spots where the listeners’ heads will be during listening  in a clear line-of-sight path with all loudspeakers  in a location unobstructed by furniture and oth[...]

  • Page 28

    Configuring the MC-12 for V4 EQ 2-14 Lexicon MC-12 Controller IMPROPER The microphones SHOULD NOT be positioned:  along the perimeter of the listening positions or listening area  in spots where listeners’ heads will not be during listening  in an obstructed line-of-sight path with the loudspeakers  in a location obstructed by furnitu[...]

  • Page 29

    Configuring the MC-12 for V4 EQ 2-15 V ersion 4 EQ User Guide IMPROPER The microphones SHOULD NOT be positioned:  along the perimeter of the listening positions or listening area  in spots where listeners’ heads will not be during listening  in an obstructed line-of-sight path with the loudspeakers  in a location obstructed by furnitu[...]

  • Page 30

    Configuring the MC-12 for V4 EQ 2-16 Lexicon MC-12 Controller PERFORMING AUTOMA TIC CALIBRA TION AUTO SPEAKER SETUP TEST WILL BEGIN IN 10 PRESS V TO SKIP COUNTDOWN MAIN MENU MODE ADJUST AUDIO CONTROLS SETUP SPEAKER SETUP SET CROSSOVERS CHECK MICROPHONES AUTOMA TIC MANUAL SET CROSSOVERS BEFORE CALIBRA TING SETUP INPUTS SPEAKERS REAR P ANEL CONFIG DI[...]

  • Page 31

    Configuring the MC-12 for V4 EQ 2-17 V ersion 4 EQ User Guide SETTING ROOM EQ FRONT LEFT --- CENTER --- FRONT RIGHT --- SIDE RIGHT --- REAR RIGHT --- REAR LEFT --- SIDE LEFT --- SUB (MONO) --- SUB RIGHT N/A LFE N/A SETTING ROOM EQ FRONT LEFT SET CENTER SET FRONT RIGHT SET SIDE RIGHT SET REAR RIGHT SET REAR LEFT SET SIDE LEFT SET SUB (MONO) SET SUB [...]

  • Page 32

    AUTO DIST ANCES FRONT LEFT 12.0ft CENTER 10.5ft FRONT RIGHT 12.0ft SIDE RIGHT 4.5ft REAR RIGHT 0.0ft REAR LEFT 6.0ft SIDE LEFT 4.5ft SUB (MONO) N/A SUB RIGHT N/A LFE N/A REAR RIGHT ERROR Configuring the MC-12 for V4 EQ 2-18 Lexicon MC-12 Controller Step EQ DIST ANCES LEVELS DIST ANCES or OUTPUT LEVELS ROOM EQ 7 The AUTO DISTANCES or AUTO LEVELS scr[...]

  • Page 33

    T roubleshooting Description Result Configuring the MC-12 for V4 EQ 2-19 V ersion 4 EQ User Guide The MC-12 calibrated the distance or output level of the selected loudspeaker without error . The selected loudspeaker is not present in the loudspeaker setup according to the CUSTOM or THX SETUP menu. The calibrated distance is accurate, but the micro[...]

  • Page 34

    Configuring the MC-12 for V4 EQ 2-20 Lexicon MC-12 Controller Step EQ DIST ANCES LEVELS DIST ANCES or OUTPUT LEVELS ROOM EQ 8 9 10 When finished viewing the error found in Step 7, press the  arrow button to open the SET DIS- T ANCES or SET LEVELS screen (shown above). Press the  and  arrow buttons to toggle between calibrated and original [...]

  • Page 35

    Configuring the MC-12 for V4 EQ 2-21 V ersion 4 EQ User Guide Note: Once automatic calibration has been performed, use the BASS PEAK LIMITERS menu to set amplitude limits for low-frequency signals sent to the Main Zone audio output connectors labeled Subwoofer L/R and LFE and redirected to other output connectors. ADJUSTING ROOM CORRECTION Performi[...]

  • Page 36

    Configuring the MC-12 for V4 EQ 2-22 Lexicon MC-12 Controller REMOTE CONTROL COMMANDS The table below lists remote control commands that can be used to adjust the ROOM EQ and ROOM EQ LEVEL parameters when the Zone 2 Command Bank is activated. These commands are additions to the remote control command matrix in the MC-12 User Guide . Button Zone 2 C[...]

  • Page 37

    Configuring the MC-12 for V4 EQ 2-23 V ersion 4 EQ User Guide V4 EQ MENU TREES When the MC-12 is running V4 EQ , the menu trees shown in this section replace the AUTO SPEAKER SETUP and AUDIO CONTROLS menu trees shown in the MC-12 User Guide (Rev 2) . CHECK MICROPHONES MAIN MENU MODE ADJUST AUDIO CONTROLS SETUP CHECK MICROPHONES CHECKING FOR SILENCE[...]

  • Page 38

    Configuring the MC-12 for V4 EQ 2-24 Lexicon MC-12 Controller AUTO SPEAKER SETUP TEST WILL BEGIN IN 10 PRESS V TO SKIP COUNTDOWN EQ DIST ANCES LEVELS MAIN MENU MODE ADJUST AUDIO CONTROLS SETUP SPEAKER SETUP SET CROSSOVERS CHECK MICROPHONES AUTOMA TIC MANUAL SET CROSSOVERS BEFORE CALIBRA TING SETUP INPUTS SPEAKERS REAR P ANEL CONFIG DISPLA YS VOLUME[...]

  • Page 39

    Configuring the MC-12 for V4 EQ 2-25 V ersion 4 EQ User Guide ROOM EQ AUTO SPEAKER SETUP TEST WILL BEGIN IN 10 PRESS V TO SKIP COUNTDOWN MAIN MENU MODE ADJUST AUDIO CONTROLS SETUP SPEAKER SETUP SET CROSSOVERS CHECK MICROPHONES AUTOMA TIC MANUAL SET CROSSOVERS BEFORE CALIBRA TING SETUP INPUTS SPEAKERS REAR P ANEL CONFIG DISPLA YS VOLUME CONTROLS TRI[...]

  • Page 40

    Configuring the MC-12 for V4 EQ 2-26 Lexicon MC-12 Controller DIST ANCES or OUTPUT LEVELS AUTO SPEAKER SETUP TEST WILL BEGIN IN 10 PRESS V TO SKIP COUNTDOWN MAIN MENU MODE ADJUST AUDIO CONTROLS SETUP SPEAKER SETUP SET CROSSOVERS CHECK MICROPHONES AUTOMA TIC MANUAL SET CROSSOVERS BEFORE CALIBRA TING SETUP INPUTS SPEAKERS REAR P ANEL CONFIG DISPLA YS[...]

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    3 Oak Park, Bedford, MA, 01730-1413 USA | T elephone: 781-280-0300 | Fax: 781-280-0490 | www .lexicon.com Customer Service: T elephone: 781-280-0300 | Sales Fax: 781-280-0495 | Ser vice Fax: 781-280-0499 Product Shipments: 16 Pr ogress Road, Billerica, MA 01821-5730 USA Part No. 070-15993 | Rev 0 | 05/04[...]