SoundCraft MBI 10 Series User Manual
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SoundCraft MBI 10 Series User Manual

SoundCraft MBI 10 Series User Manual

Modular mixing console
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SERIES 10
USER GUIDE

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Summary of Contents for SoundCraft MBI 10 Series

  • Page 1 SERIES 10 USER GUIDE...
  • Page 2 Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor. Soundcraft Electronics Ltd. shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual.

  • Page 3: Table Of Contents

    Introduction Introduction Precautions and Safety Instructions Block Diagrams Mono Input Module Telco Input Module Stereo Input Module Master/Monitor Section Applications Connections and Connectors Mono Input Channel Telco Input Channel Stereo Input Channel Master Section Monitor Section Meterbridge Mono Input Channel Description and Operation Specifications Telco Channel...
  • Page 4 Stereo Input Channel Description and Operation Specifications Master Section Description and Operation Specifications Monitor Section Description and Operation Appendices Glossary Dimensions Warranty...

  • Page 5: Introduction

    Introduction Introduction Precautions and Safety Instructions Introduction to the MBI Series 10...
  • Page 6 The Series 10 is a fully modular mixing console for local radio stations and smaller self-operated studios of national broadcasters. The system has been designed to accommodate the individual requirements of a station by providing flexibility and a choice of configurations. The Series 10 is available in a 24 module-width frame with a capacity of 20 input channels (12 if fitted with a script space, the script space is 8 modules wide;...

  • Page 7: Power Supply

    Master and Monitor Module There are two variants of the Master and Monitor module: the Production variant has the optional main Programme Faders and Effects Returns, the Broadcast version has neither. The Master and Monitor module also contains the auxiliary master level control;...
  • Page 8 General Precautions Avoid storing or using the console in conditions of excessive heat or cold, or in positions where it is likely to be subject to vibration, dust or moisture. Do not use any liquids to clean the fascia of the unit: a soft dry brush is ideal. Use only water or ethyl alcohol to clean the trim and scribble strips.
  • Page 9 Signal Levels It is important to supply the correct input levels to the console, otherwise signal-to-noise ratio or distortion performance may be degraded; and in extreme cases damage to the internal circuitry may result. Likewise, on all balanced inputs avoid sources with large common mode DC, AC or RF voltages, as these will reduce the available signal range on the inputs.
  • Page 10 Introduction to the MBI Series 10...

  • Page 11: Block Diagrams

    Block Diagrams Mono Input Module Telco Input Module Stereo Input Module Master/Monitor Module Block Diagrams...

  • Page 12: Mono Input Module

    Block Diagrams Mono Input Module Telco Input Module Stereo Input Module Master/Monitor Module Block Diagrams...
  • Page 13 MONO INPUT CHANNEL PRE or POST PEAK LINE INSERT OPT. 80Hz FADER +/-15dB TRIM TB CONTROL PFL CONTROL TB ENABLE LINE REMOTE CUE LIGHT LOGIC COUGH INPUT 2 START INPUT 2 STOP /RE-CUE TELCO INPUT CHANNEL PRE or POST PEAK OPT.

  • Page 14: Master/Monitor Section

    MASTER/MONITOR SECTION OPTIONAL FX RETURN FX LEVEL DISTANT PEAK MUTE RELAY LOCAL MUTE RELAY MASTER AUX OUTPUT MONO OUTPUT OPTIONAL MONO FADER LEFT OUTPUT OPTIONAL TO SOURCE SELECT STEREO FADER RIGHT OUTPUT STEREO OUT DESK SOURCE SELECT LEVEL PRES HEADPHONES CONTROL ROOM MONITOR IS SIMILAR EXCEPT THAT IT HAS AUTO PFL INSTEAD OF...
  • Page 15 Block Diagrams...

  • Page 16: Applications

    Applications Connections and Connectors Mono Input Channel Telco Input Channel Stereo Input Channel Master Section Monitor Section Meterbridge Applications...

  • Page 17: Master Section

    Applications Connections and Connectors Mono Input Channel Telco Input Channel Stereo Input Channel Master Section Monitor Section Meterbridge Applications...
  • Page 18 Applications This section is intended to help you to connect, to the console, the external equipment which you need. It also identifies all of the user-definable options which are available and gives the location of the links involved. Connections And Connectors Although this may seem to be a simple subject, faulty connectors and cabling are the source of most sound system problems.
  • Page 19 Mono Input Channel REMOTES SOCKET (25-pin D-type female) This socket provides for the following facilities: Input 1 Cue Lamp A relay switch closes between pins 12 & 13 of the Remotes socket when the following conditions are all met: The Mic input is selected, the REM button is depressed and the Fader is up. The following diagram shows one possible method of using this relay switch to control a cue lamp.
  • Page 20 COUGH/REVERSE TALKBACK Switch This user-provided facility has two functions, as follows: 1) The Input Channel is muted when all of the following conditions are met: The Mic input is selected, the Fader is up and the Cough Switch is closed. This allows the Presenter/Guest to temporarily mute his or her microphone.
  • Page 21 Link Locations The following outline diagram of the Mono Input Channel PCB shows the location of the user-changeable links. Link Locations on the Mono Input Channel PCB LK 1 Telco Input Channel The following diagram shows how a Telephone Hybrid may be connected to the Telco Input Channel.
  • Page 22 Ext Talkback (logic) Two pins on the Remotes socket are used for this feature, as follows: Ground Pin 3 Talkback enable Pin 14 To use this feature you must connect a switch between pins 3 and 14. When the switch is closed and the Telco channel Fader is down a PFL condition is forced (the led in the PFL switch glows to indicate this);...
  • Page 23 Stereo Input Channel LINE 1 + REMOTES SOCKET (25-pin D-type female) This socket provides for the following facilities: Input 1 Left This input is electronically balanced. The input pins are as follows: Hot (+ve) Pin 24 Cold (-ve) Pin 25 Input 1 Right This input is electronically balanced.
  • Page 24 Link Locations The following outline diagram of the Stereo Input Channel PCB shows the location of the user-changeable links. Link Locations on the Stereo Input Channel PCB LK 1 Applications...
  • Page 25 Master Section Power Socket The connections are as follows: Pin 1 +17V Pin 2 -17V Pin 3 +48V Pins 4, 5 and 6 tied together and to all grounds REMOTES SOCKET (9-pin D-type male) This socket provides for the following facilities: Local Mute Relay A 2-pole relay switch closes between pins 2 &...
  • Page 26 Continuous TB O/P The connections are: Signal Ring + Sleeve Ground External Inputs Socket (15-pin D-type male) The following balanced inputs are provided for: External Input 1 Left+ Pin 2 External Input 1 Left- Pin 9 External Input 1 Right+ Pin 3 External Input 1 Right- Pin 10...

  • Page 27: Meterbridge

    Meterbridge Wiring The meterbridge is equipped with a distribution board, SC3357, to which the meterbridge modules are connected. The optional meterbridge equipment (listed below) can be user-connected to this distribution board via the wiring harness which is supplied with the optional equipment. Options The 24 module-width frame has space for 24 meterbridge-option widths and the 32 module-width frame has space for 32 meterbridge-option widths.
  • Page 28 Meterbridge Distribution Board SC3357 Applications...

  • Page 29: Mono Input Channel

    Mono Input Channel Description & Operation Specification Mono Input Channel...
  • Page 30 Input Stage The LINE INPUT is via a standard female XLR-3 connector. It is available when the LINE switch is depressed. The MIC INPUT is via a standard female XLR-3 connector. It is available when the LINE switch is released. REMOTES Socket This 25-way D-type connector allows you to implement the following facilities: COUGH/REVERSE TALKBACK Switch...
  • Page 31 Two COARSE ADJUSTMENT PRESET POTS are available, one for each of the input sockets. They allow for the coarse adjustment of input levels. The LINE switch selects the Line Input socket when depressed and the Mic Input socket when released. A LED in the switch glows red when the Line Input is selected.

  • Page 32: Specifications

    The PFL (Pre-Fade Listen) switch allows you to listen, via the Monitors section, to an the input on this channel. When the Fader is moved away from the down position the PFL circuit is automatically deactivated: PFL cannot therefore be activated when the Fader is up. A red LED glows to indicate that the PFL circuit is active.

  • Page 33: Telco Channel

    Telco Channel Description & Operation Specification Telco Channel...
  • Page 34 Input Stage The Telco module must be connected to the telephone system via a telephone hybrid circuit. The Applications section of this manual gives more details. The LINE input is a female XLR into which the output from an external telephone hybrid may be plugged.
  • Page 35 section). Optional Equaliser The HF EQ control provides high frequency (above 8.5kHz) boost and cut of +/-10dB. The MF EQ control provides medium frequency boost and cut of +/-10dB at 3kHz. The LF EQ control provides low frequency (below 180Hz) boost and cut of +/-10dB.
  • Page 36 switch is depressed and is properly connected to the Hybrid). Telco Channel...

  • Page 37: Stereo Input Channel

    Stereo Input Channel Description & Operation Specification Stereo Input Channel...
  • Page 38 Input Stage The LINE 2 (LEFT and RIGHT) female XLR connectors provide for an alternative or temporary source. The inputs are electronically balanced. The LINE 1 + REMOTES 25-way D-type female socket provides the connections for the Line 1 Inputs and also the remote controls for Line 1 and Line 2 inputs.
  • Page 39 When the 80Hz switch is depressed an 80Hz high-pass filter is switched into the signal path. A yellow LED glows to indicate this. This control is useful for filtering-out low frequency hum. Level Control The BAL control allows the stereo image to be balanced. It has a range of ±6dB. The GAIN control provides +/- 15dB gain.

  • Page 40: Specifications

    Specifications Line Inputs Electronically balanced Input Impedance >10kΩ Input Levels: Line 1 -10dBu to 0dBu, Line 2 0dBu or -10dBv selectable +/- 10dB shelving at 180Hz 10dB cut and boost at 3kHz +/-10dB shelving at 8.5kHz Stereo Input Channel...
  • Page 41 Master Section Description & Operation Specification Master Section...

  • Page 42: Master Section

    Master Section Outputs Programme Outputs The LEFT OUT male XLR connector provides an electronically balanced output from the PGM MIX L bus. The Stereo Master Fader (8) controls the level of the output. The RIGHT OUT male XLR connector provides an electronically balanced output from the PGM MIX R bus.
  • Page 43 Optional Effects Control (Production variant only) The following FX controls are duplicated for both FX Return 1 and FX Return 2. This control determines the position of the signal within the stereo image. Rotation fully anticlockwise feeds the signal solely to the left, whilst rotation clockwise sweeps the image to the right.
  • Page 44 Specifications Mix Left, Right & Mono Max. output +21dBu Output impedance <75Ω General < 0.03% Crosstalk < 60dB Master Section...

  • Page 45: Description And Operation

    Monitor Section Description & Operation Monitor Section...
  • Page 46 Input/Output Sockets ⁄ The TB I/P 1 and T/B I/P 2 inputs are via 3-pole " ‘A’ gauge jack sockets. They each provide the means of connecting a microphone, at line level, and an activating switch to provide talkback to the Control-room. The signal from each mic is passed to the Control-room monitor and the Presenter’s headphones (see the Applications section).
  • Page 47 MUTE This red LED glows to indicate that the Studio Monitor output has been muted. This occurs when any mics connected to Mono Input Channels which are designated as Distant are being used. AUTO PFL When this switch is depressed any PFL selected from any of the channels will be fed to the Studio Monitor.

  • Page 48: Monitor Section

    Control Room C/ROOM MONITOR ⁄ This output is via a 3-pole " ‘A’ gauge jack socket. The output must be amplified in order to drive speakers. The Control-room Monitor has 4 sources of input. They are: Desk, Ext, Aux and PFL.
  • Page 49 This switch selects the auxiliary input as the source of the Presenter’s Headphones. A red LED glows to indicate that it has been selected. To de-select this input you may either press this switch again to return to Desk, or you may press the EXT switch.
  • Page 50 Metering When the METER FOLLOW MONITOR switch is released the Meters will follow the Desk output, but will be interrupted by any PFL signal. When the switch is depressed the meters will follow the Control-room Monitor. A red LED in the switch glows to indicate that the Meters are following the Control-room Monitor.
  • Page 51 Appendices Glossary Dimensions Warranty Appendices...

  • Page 52: Glossary

    Glossary Attenuation The reduction of a signal level. The attenuation is usually measured in dB. Balance The relative levels of the left and right channels of a stereo signal. Clipping The onset of severe distortion in the signal path, usually caused by the peak signal voltage being limited by the circuit’s power supply voltage.

  • Page 53: Dimensions

    Dimensions All dimensions are in millimetres. 24 SLOT FRAME 889.0 32 SLOT FRAME 1169.0 310.0 70.5 56.0 637.0 Appendices...

  • Page 54: Warranty

    Equipment has been properly installed in accordance with instructions contained in Soundcraft’s manual; and b) the End User has notified Soundcraft or the Dealer within 14 days of the defect appearing; and c) no persons other than authorised representatives of Soundcraft or the Dealer have effected any replacement of parts maintenance adjustments or repairs to the Equipment;...

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