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Crest Audio CENTURY SERIES LM Manual

Century series
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E N T U RY
E R I E S
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WNER
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ANUAL

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Summary of Contents for Crest Audio CENTURY SERIES LM

  • Page 1 E N T U RY E R I E S WNER ANUAL...
  • Page 2 Congratulations on your purchase of a Century Series console. All of us at Crest Audio in Paramus, New Jersey, USA, support your decision, knowing your console contains the finest combination of design and manufacture in the industry. While your new Century Series console is one of the most feature-packed available, great effort has been put into making it simple to operate.
  • Page 3 ABLE OF O N T E N T S Feature Overview A brief description of the LM design, features and functions. System Connections Contains diagrams illustrating conventional system connections. Wiring Conventions Contains diagrams indicating how connectors for Crest consoles are wired. Power Supply A description of the rack-mountable Century Series consoles power supply.

  • Page 4: Lm Feature Overview

    The Century Series was designed to have all the features and functions demanded by the modern music professional. The engineers at Crest Audio have delivered the finest combination of function and sonic accuracy in an affordable intuitive con- sole. The features listed below are common to all Century Series LM Consoles.

  • Page 5: System Connections

    ONITOR ONSOLE ENTURY ERIES System Connections The console is the nerve center of a sound system and controls most of the variables within a system. Proper connection and component relationships are vital to assure accurate operation and results. The following diagrams illustrate conventional sys- tem connections.
  • Page 6 ENTURY ERIES 6001 Professional Power Amplifier Clip/Limit Signal Temp/DC Active Ch A Ch B 6001 Professional Power Amplifier Clip/Limit Signal Temp/DC Active Ch A Ch B Floor Wedge Connection Receivers for In-Ear Monitors Transmitters for In-Ear Monitors Stereo In-Ear Monitor Connection...
  • Page 7 ENTURY ERIES Wiring Conventions Since the same connectors are used throughout the professional audio industry, it is important to know how the connectors for Crest’s Century Series are wired. The wiring is as follows. INPUT XLR OUTPUT XLR PIN 1 PIN 2 PIN 3 PIN 3...

  • Page 8: Lm Power Supply

    POWER OUT Pin 4 Analog + 24V @ 6 Pin 5 Digital 20V @ 6 Pin 6 +48V A division of Crest Audio Inc. 100 Eisenhower Dr. Model XCVA06 Pin 7 -20V Paramus, New Jersey 07652 USA Supply Identification Twin Supply Operation...

  • Page 9: Power Connections

    Pin 4 Analog + 24V @ 6 Pin 5 Digital 20V @ 6 Pin 6 +48V To AC Mains A division of Crest Audio Inc. Pin 7 -20V 100 Eisenhower Dr. Model XCVA06 Paramus, New Jersey 07652 USA Interface Cable...
  • Page 10 ENTURY ERIES LM-12 INPUT MODULE The LM-12 input module is the primary input control for the LM- +48V 12 monitor console. It differs from the LM-20 input module only in the mix send section. LINE 48V Phantom Power Switch GAIN Turns on 48V Phantom Power as required by certain microphones for proper operation.

  • Page 11: Rear Panel Connections

    ENTURY ERIES PFL Switch Rear Panel Connections Samples the channel’s signal pre-fader and allows for monitor- Direct Out ing within the master section of the console. This signal is not This 1/4-inch TRS jack carries the direct output signal (post affected by the Mute Switch.

  • Page 12: Gain Control

    ENTURY ERIES LM-20 (LM-8+4) INPUT MODULE This module serves as the input module for LM-20 and the now- +48V discontinued LM-8+4. The only difference between the two is the factory default settings on the dual concentric sends.For the LINE LM-20 the sends are set for level/level operation. For an LM- 8+4 the sends are set for level/pan operation.
  • Page 13 ENTURY ERIES MUTE Switch with LED Rear Panel Connections Mutes the channel and all sends. This switch does not affect Direct Out the PFL switch or the Peak and Signal Present LED indicators, This 1/4-inch TRS jack carries the direct output signal (post The LED illuminates when the channel is muted either from fader &...
  • Page 14 ENTURY ERIES OUTPUT RETURN INPUT ø INSERT TB ENB BAL OUT EQ IN MUTE INSERT SEND PEAK INSERT RTN RETURN INPUT ø...

  • Page 15: Output Fader

    ENTURY ERIES LM-12 Output Module The LM-Mono Group output module is the primary output Output PEAK & Signal LEDs module on the LM-12 and the secondary output module on the The red LED indicates that the output is within 3dB of the clip- LM-8+4 and the LM-20 ping point.
  • Page 16 ENTURY ERIES OUTPUT RETURN INPUT M O N O Ø INSERT TB ENB BAL OUT LEFT EQ IN INSERT SEND MUTE INSERT RETURN PEAK RETURN BAL OUT RIGHT INSERT SEND INSERT RETURN INPUT M O N O Ø...
  • Page 17 ENTURY ERIES LM-8+4 Output Module The LM-Stereo group output module is the primary output MUTE Switch with LED module on the discontinued LM-8+4. Mutes the output. This switch does not affect the PFL switch or the Peak and Signal Present LED indicators. Output Meters Output PFL Monitors the post-fader output signal via two ten-segment...
  • Page 18 ENTURY ERIES OUTPUT RETURN INPUT Ø INSERT ON TB ENB BAL OUT LEFT EQ IN PEAK INSERT SEND MUTE INSERT RETURN RETURN BAL OUT RIGHT INSERT SEND INSERT RETURN INPUT Ø...
  • Page 19 ENTURY ERIES LM-20 Output Module The LM-Dual group output module is the primary output mod- Output PEAK & Signal LEDs ule on the LM-20. The red LED indicates that the output is within 3dB of the clip- ping point. Output Meter Monitors the post-fader output signal via two ten-segment The green LED constantly displays the level of signal activity LED arrays.
  • Page 20 ENTURY ERIES OUTPUT BAL OUT INSERT SEND INSERT RTN MONITOR A LEFT MONITOR A RIGHT EXT TB IN...

  • Page 21: Lm Master Module A

    ENTURY ERIES LM Master Module A Output 11 Talkback Enable Injects the talkback signal from the master section into the This the first of two modules that include master controls for group output. all LM consoles in addition to mono output eleven. Output 11 Dim Switch Output Meter Introduces a -6dB drop to the output signal.
  • Page 22 ENTURY ERIES OUTPUT BAL OUT INSERT SEND INSERT RTN MONITOR B LEFT MONITOR B RIGHT OSC IN...

  • Page 23: Lm Master Module B

    ENTURY ERIES LM Master Module B This the second of two modules that include master controls Output 12 Insert On Switch for all LM consoles in addition to mono output twelve. Turns on the insert loop for the output signal. If an incomplete insert loop is present, depressing this switch will mute the out- Output Meter Monitors the post-fader output signal of group 12 via a ten-...
  • Page 25 Appendix A Technical Information...

  • Page 26: Specifications

    ENTURY ERIES Specifications Architect’s & Engineer’s Specifications The following are the technical specifications for the Century LM console. The following text should be used when specifying a Century LM in a bid or proposal. The monitor console shall be constructed in a modular fashion Frequency Response and be housed in a steel frame with molded plastic side +0.0, -0.5dB, 20Hz to 20 kHz (referenced to 1kHz)
  • Page 27 ENTURY ERIES LM Block Diagram PPENDIX...
  • Page 28 ENTURY ERIES PPENDIX...
  • Page 29 ENTURY ERIES Console Rear Views and Dimensions .75in. Size 19mm 33.55" 31.80" 43.15" 41.40" 52.75" 51.00" 57.55" 55.80" 67.15" 65.40" 81.55" 79.80" Size 852mm 808mm 1096mm 1052mm 1340mm 1295mm 1462mm 1417mm 1706mm 1661mm 2071mm 2027mm Crest Consoles Engineering, May 5, 1997 1.5in./38mm PPENDIX...
  • Page 30 PFL or AFL IMPORTANT Output modules are pre-assigned at the Crest factory These modules must always be installed in the correct positions. They are NOT interchangeable without being properly re- assigned. Please contact the Crest Audio Service Department for more information. PPENDIX...
  • Page 31 IMPORTANT Output modules are pre-assigned at the Crest factory These modules must always be installed in the correct positions. They are NOT interchangeable without being properly re- assigned. Please contact the Crest Audio Service Department for more information. PPENDIX...
  • Page 33 Appendix B Glossary...
  • Page 34 ENTURY ERIES Glossary Fader Used for final output control of an input/output channel except Balanced Insert Return those sends selected pre fader. (Insert Output levels are not See Insert Return affected by the fader position.) Balanced Line In Gain Control See Line Input Adjusts input gain for proper signal level on the input.

  • Page 35: Line Input

    ENTURY ERIES Input Fader Mix Switch Oscillator On This switch activates circuitry that sums all input signals and Switches on the internal (or external if connected) oscillator assigns the summed signal to the Monitor A output. This signal which is fixed at 1kHz . The oscillator only operates when the is post fader.
  • Page 36 ENTURY ERIES Return 1/2 These connectors accept a balanced signal which is delivered to the return master controls on the master section Return Level Controls Adjusts the level of return signals 1 and 2 in the output. These signals come from the Master Section. The center knob adjusts level while the outer knob adjusts panning within the stereo image.
  • Page 37 Appendix C Schematics LOCATION DESCRIPTION SCHEMATIC # DWG # REV # LM 12 (MONO) INPUT MODULE LM 12 INPUT CONNECTOR 76D1753 LM 12 INPUT MAIN 76D1812 LM 20 / 8+4 INPUT MODULE LM 20 / 8+4 INPUT CONNECTOR 76D1753 LM 20 / 8+4 INPUT MAIN 76D1830 MONO OUTPUT GROUP MODULE LM MONO OUTPUT...
  • Page 38 Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA : 201.909.8700 : 201.909.8744 http://www.crestaudio.com Printed in USA *D7000002* LM Owners Manual Copyright © 1997 Crest Audio Inc. v. 2.3 11/3/97 - D7000002...

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