Lexicon MC-12 EQ - REV 1 User Manual
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Lexicon MC-12 EQ - REV 1 User Manual

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Summary of Contents for Lexicon MC-12 EQ - REV 1

  • Page 1 MC-12 Controller User Guide...
  • Page 3 DTS, DTS-ES, Neo:6, and DTS 96/24 are trademarks of Digital Theater Systems, Inc. Service Fax 781-280-0499 email csupport@harmanspecialtygroup.com Lexicon, Logic 7 and the L7 logo are registered trademarks of Harman International Industries, Inc. U.S. Patent Nos. D454,553; D454,860; 5,796,844; 5,870,480 Product Shipments and other worldwide patents issued and pending.
  • Page 4 Introduction Lexicon DOCUMENTATION CONVENTIONS This document contains general operation instructions for the MC-12 and MC-12 Balanced Digital Controllers. It is important to read this user guide before attempting to use this product. The following symbols are used in this document:...

  • Page 5: Table Of Contents

    Introduction MC-12 EQ Section 1: Understanding Room Equalization Loudspeaker Sound in a Room ..... . . 1-2 Room Modes ........1-5 Surround Sound Issues .

  • Page 7: Section 1: Understanding Room Equalization

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

  • Page 8: Loudspeaker Sound In A Room

    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 this section was authored by Dr. James Muller, Lexicon senior software engineer. LOUDSPEAKER SOUND IN A ROOM...
  • Page 9 Understanding Room Equalization EQ User Guide feet, so it will be scattered by any person (or object bigger than 1 Figure 1-3. Parallel walls reflect sound multiple times. foot) in the room. The strength of reflections also depends on the transmission properties of the reflector.
  • Page 10 Understanding Room Equalization Lexicon MC-12 Controller of your particular room; how big it is, the arrangement of the fur- Figure 1-4. Bass frequencies, which have longer wavelengths, behave more predictably than higher frequencies. niture, speaker placement and so on. Designers can correct for some speaker characteristics. For exam- ple, a typical cone driver does not radiate all frequencies evenly in all directions.

  • Page 11: Room Modes

    Understanding Room Equalization EQ User Guide Figure 1-5. Tips for arranging your listening room. along its length at wavelengths of 36 ft (31Hz), 18 ft (63Hz), 12 ft (94Hz), and so on. Each dimension of length, width and ceiling height will resonate independently at its own frequencies. Figure 1-6.

  • Page 12: Surround Sound Issues

    Understanding Room Equalization Lexicon MC-12 Controller The presence of a resonance with high Q is not a desirable condi- Room modes affect the frequency response you hear in several tion in listening rooms. Proper treatment of a resonance requires a ways.
  • Page 13 Understanding Room Equalization EQ User Guide close to you, its sound will arrive at your ears approximately 5 mil- When a room has multiple viewing positions, the distance and level liseconds too early. settings will be more accurate if all of those seats are clustered together as closely as possible (Figure 1-8).
  • Page 14 Understanding Room Equalization 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...
  • Page 15 Configuring the MC-12 for EQ About Automatic Calibration ......2-3 Connecting the Microphones ......2-5 Positioning the Microphones for the Microphone Check .

  • Page 17: Section 2: Configuring The Mc-12 For Eq

    Configuring the MC-12 for EQ EQ User Guide ABOUT AUTOMATIC CALIBRATION DURING automatic calibration: When running the EQ software, the MC-12 offers automatic  Calibrate the listening room’s bass response BEFORE calibrating calibration of the listening room’s bass response, loudspeaker loudspeaker output levels.
  • Page 18 Configuring the MC-12 for EQ Lexicon MC-12 Controller Procedure Description CHECK MICROPHONES Examines the microphones connected to the rear panel microphone input connectors.  Confirms that the microphones are properly connected and functioning.  Calculates an average microphone level, allowing the MC-12 to compensate for individual microphone sensitivities.

  • Page 19: Connecting The Microphones

    Figure 2-1. Microphone input connectors on MC-12 rear panel. Automatic calibration requires the microphones included in the MAIN AUDIO O Lexicon Microphone Kit, which is available at authorized Lexicon MICROPHONE INPUTS dealers. Performing automatic calibration with other microphones will produce unknown results.

  • Page 20: Positioning The Microphones For The Microphone Check

    Configuring the MC-12 for EQ Lexicon MC-12 Controller 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.
  • Page 21 Configuring the MC-12 for EQ EQ User Guide IMPROPER Figure 2-3. Improper microphone placement for the microphone check. The microphones SHOULD NOT be positioned:  In separate locations Rear Left  In locations scattered throughout the listening room Side  In an obstructed line-of-sight path with the Left loudspeakers  In a location obstructed by furniture and other...

  • Page 22: Performing The Microphone Check

    Configuring the MC-12 for EQ Lexicon MC-12 Controller PERFORMING THE MICROPHONE CHECK MAIN MENU SETUP SPEAKER SETUP CHECK MICROPHONES CHECK MICROPHONES CHECK MICROPHONES MODE ADJUST INPUTS SET CROSSOVERS GROUP MICROPHONES CHECKING FOR SILENCE CHECKING MICROPHONES SPEAKERS CHECK MICROPHONES AUDIO CONTROLS...
  • Page 23 Configuring the MC-12 for EQ EQ User Guide The CHECK MICROPHONES results • Do not disconnect the microphones from the microphone CHECK MICROPHONES screen (shown to the right) opens on input connectors. If the microphones are disconnected, MIC 1 MIC 1 ERROR ERROR MIC 2...

  • Page 24: Repositioning The Microphones For Automatic Calibration

    MC-12. Make sure the microphone cable plug is fully inserted for a solid connection. NOT DETECTED • The microphone may be damaged. Contact an authorized Lexicon dealer for assistance. The microphone level determined during the • Examine the microphone input connection to ensure that the microphone is properly connected...
  • Page 25 Configuring the MC-12 for EQ EQ User Guide Refer to the microphone placement examples that begin below to properly position the microphones for all automatic calibration procedures. PROPER Figure 2-4. Proper microphone placement to achieve the best results for a single lis- tening postion.
  • Page 26 Configuring the MC-12 for EQ Lexicon MC-12 Controller PROPER Figure 2-5. Proper microphone placement to achieve the best results for several lis- tening positions in a single row. The microphones SHOULD be positioned:  Across a single row of listening positions  At the approximate spots where the listeners’...
  • Page 27 Configuring the MC-12 for EQ EQ User Guide PROPER Figure 2-6. Proper microphone placement to achieve the best results for several lis- tening positions within the listening room. The microphones SHOULD be positioned:  In single listening positions within the listening room Rear Left...
  • Page 28 Configuring the MC-12 for EQ Lexicon MC-12 Controller IMPROPER Figure 2-7. Improper microphone placement for automatic calibration. The microphones SHOULD NOT be positioned:  Along the perimeter of the listening positions Rear Left or listening area  In spots where listeners’ heads will not be during...
  • Page 29 Configuring the MC-12 for EQ EQ User Guide IMPROPER Figure 2-8. Improper microphone placement for automatic calibration. The microphones SHOULD NOT be positioned:  Along the perimeter of the listening positions Rear Left or listening area  In spots where listeners’ heads will not be during Side listening Left...

  • Page 30: Performing Automatic Calibration

    Configuring the MC-12 for EQ Lexicon MC-12 Controller PERFORMING AUTOMATIC CALIBRATION MAIN MENU SETUP SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP MODE ADJUST INPUTS SET CROSSOVERS EQ DISTANCES LEVELS EQ DISTANCES LEVELS !CAUTION! TEST WILL BEGIN IN...
  • Page 31 Configuring the MC-12 for EQ EQ User Guide SETTING DISTANCES AUTO DISTANCES SETTING LEVELS AUTO LEVELS SETTING ROOM EQ SETTING ROOM EQ FRONT LEFT 0.0ft FRONT LEFT 12.0ft FRONT LEFT 0.0dB FRONT LEFT -2.0dB FRONT LEFT FRONT LEFT CENTER 0.0ft CENTER 10.5ft CENTER...
  • Page 32 Configuring the MC-12 for EQ Lexicon MC-12 Controller AUTO DISTANCES AUTO LEVELS AUTO SPEAKER SETUP ROOM EQ DONE FRONT LEFT 12.0ft FRONT LEFT -2.0dB DISTANCES ERROR CENTER ERROR PRESS V TO CONTINUE CENTER 10.5ft CENTER 0.0dB LEVELS FRONT RIGHT 12.0ft FRONT RIGHT -2.0dB...
  • Page 33 Configuring the MC-12 for EQ EQ User Guide DISTANCES and OUTPUT LEVELS Results Result Description Troubleshooting The MC-12 calibrated the distance or output (SPEAKER) level of the selected loudspeaker without error. The selected loudspeaker is not present in the • Use the CUSTOM or THX SETUP menu to add the selected loudspeaker to the loudspeaker (SPEAKER) loudspeaker setup according to the CUSTOM setup.
  • Page 34 Configuring the MC-12 for EQ Lexicon MC-12 Controller SET DISTANCES AUTO DISTANCES SET LEVELS AUTO LEVELS FRONT LEFT ERROR AUTO DISTANCES FRONT LEFT ERROR AUTO LEVELS FRONT LEFT FRONT LEFT ERROR ERROR ORIGINAL DISTANCES CENTER 0.0ft ORIGINAL LEVELS CENTER 0.0dB FRONT RIGHT 0.0ft...

  • Page 35: Adjusting Room Correction

    Configuring the MC-12 for EQ EQ User Guide ROOM EQ ON, OFF Note: Activates and deactivates the room correction that was applied to Once automatic calibration has been performed, use the loudspeakers during the EQ DISTANCES LEVELS or ROOM EQ the BASS PEAK LIMITERS menu to set amplitude procedure.

  • Page 36: Remote Control Commands

    Configuring the MC-12 for EQ 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.

  • Page 37: Eq Menu Trees

    Configuring the MC-12 for EQ EQ User Guide EQ MENU TREES When the MC-12 is running 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. CHECK MICROPHONES MAIN MENU SETUP...

  • Page 38: Eq Distances Or Levels

    Configuring the MC-12 for EQ Lexicon MC-12 Controller EQ DISTANCES LEVELS MAIN MENU SETUP SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP MODE ADJUST INPUTS SET CROSSOVERS EQ DISTANCES LEVELS EQ DISTANCES LEVELS !CAUTION! TEST WILL BEGIN IN...

  • Page 39: Room Eq

    Configuring the MC-12 for EQ EQ User Guide ROOM EQ MAIN MENU SETUP SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP MODE ADJUST INPUTS SET CROSSOVERS EQ DISTANCES LEVELS !CAUTION! TEST WILL BEGIN IN SPEAKERS ROOM EQ AUDIO CONTROLS SPEAKERS CHECK MICROPHONES...

  • Page 40: Distances Or Output Levels

    Configuring the MC-12 for EQ Lexicon MC-12 Controller DISTANCES or OUTPUT LEVELS MAIN MENU SETUP SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP AUTO SPEAKER SETUP MODE ADJUST INPUTS SET CROSSOVERS EQ DISTANCES LEVELS !CAUTION! TEST WILL BEGIN IN SPEAKERS...
  • Page 42 3 Oak Park, Bedford, MA, 01730-1413 USA | Telephone: 781-280-0300 | Fax: 781-280-0490 | www.lexicon.com Customer Service: Telephone: 781-280-0300 | Sales Fax: 781-280-0495 | Service Fax: 781-280-0499 Product Shipments: 16 Progress Road, Billerica, MA 01821-5730 USA Part No. 070-15993 | Rev 1 | 04/05...
  • Page 43 $50,000 to $74,999 This warranty may be enforced by the original purchaser 50-64 $75,000 to $99,000 Lexicon, Inc. will pay all labor and material expenses for merchantability and fitness for a particular purpose, are $100,000+ and subsequent owners during the warranty period, covered items.
  • Page 44 Lexicon, Inc. 3 Oak Park Bedford, MA 01730-1413 USA 781-280-0300 781-280-0490 www.lexicon.com Customer Service Telephone 781-280-0300 Sales Fax 781-280-0495 Service Fax 781-280-0499 email csupport@harmanspecialtygroup.com Lexicon Part No. 070-15993 | Rev 1 | 04/05...

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Mc-12 balanced

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