User manual SOUNDCRAFT MBI SERIES 20 V1

[. . . ] It is recommended that all maintenance and service on the product should be carried out by Soundcraft Electronics Ltd. cannot accept any liability whatsoever for any loss or damage caused by service, maintenance or repair by unauthorised personnel. Soundcraft Electronics Ltd. Cranborne House, Cranborne Road, Cranborne Industrial Estate, Potters Bar, Herts. , England. Tel: Fax: 0707 665000 0707 660482 &RQWHQWV Introduction 1 Introduction Precautions and Safety Instructions 2 4 Block Diagrams 7 Mono Input Module Telco Input Module Stereo Input Module Master/Monitor Section 8 8 8 9 Applications 11 Connections and Connectors Mono Input Channel Telco Input Channel Stereo Input Channel Master Section Monitor Section Meterbridge 12 13 15 17 19 20 21 Mono Input Channel 23 Description and Operation Specifications 24 26 Telco Channel 27 Description and Operation Specifications 28 30 Stereo Input Channel 31 Description and Operation Specifications 32 34 Master Section 35 Description and Operation Specifications 36 38 Monitor Section 39 Description and Operation 40 Appendices 45 Glossary Dimensions Warranty 46 47 48 Introduction Introduction Precautions and Safety Instructions Introduction to the MBI Series 10 1 , QWURGXFWLRQ The Series 10 is a fully modular mixing console for local radio stations and smaller self-operated studios of national broadcasters. [. . . ] Rotation fully anticlockwise feeds the signal solely to the left mix bus, whilst rotation clockwise sweeps the image to the right mix bus. 12 The PEAK LED glows to give a warning of possible overload. Cueing 13 The REM (Remote) switch works in conjunction with the Fader microswitch. There is a red LED in the REM switch which will glow at two levels of brightness. The LED will glow at half brightness if the Fader is down when the REM button is pushed; you may regard this as the REM circuit being armed but not active. To make the REM circuit active the Fader must be moved away from the down position. The LED will glow at full brightness to indicate that the REM circuit is now active. When the REM circuit is active it will, depending upon other switch settings, control the Cue Lamp, Start Relay and Stop Relay: full details are given above. If the REM switch is pushed whilst the Fader is already away from the down position then the REM circuit will be active as soon as the REM switch is pushed and the LED will glow at full brightness to indicate this. Mono Input Channel 25 14 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. If the REM switch's LED is glowing at half brightness and the PFL is pushed, the START relay will operate. Output To The Programme 15 The smooth-action, 100mm FADER gives a gain of unity (0dB) when it is in the fully up position. The scale alongside the Fader indicates the attenuation, in dB, for any position. There is a microswitch attached to the Fader which detects when it is in the fully down position. 13 The PEAK LED glows to give a warning of possible overload. Cueing 14 When the COMM circuit is active the Caller will hear a reduced programme plus the signal on the T/B OUTPUT bus. This bus will carry the signal from the inbuilt mic plus the signal from any of the Mono Input modules if their respective Talkback Switches are closed. In addition the Caller's input will be put on the PFL MIX L & R buses and a PFL condition is signalled on the PFL Enable bus. The COMM circuit will be deactivated when the Fader is moved away from the down position, or when the COMM switch is pushed a second time. 15 When the PFL circuit is active the Caller's input will be put onto the PFL MIX L & R buses. The PFL circuit will be deactivated when the Fader is moved away from the down position. Output To The Programme 16 The smooth-action, 100mm FADER gives a gain of unity (0dB) when it is in the fully up position. The scale alongside the Fader indicates the attenuation, in dB, for any position. There is a microswitch attached to the Fader which detects when the Fader is in the fully down position. This microswitch helps to control many of the features which are described in this section. The input to the channel will be on-air whenever the Fader is up (unless the Divert Telco Channel 29 switch is depressed and is properly connected to the Hybrid). 30 Telco Channel Stereo Input Channel Description & Operation Specification Stereo Input Channel 31 6WHUHR, QSXW&KDQQHO 1 Input Stage 1 The LINE 2 (LEFT and RIGHT) female XLR connectors provide for an alternative or temporary source. The inputs are electronically balanced. 2 2 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. The inputs are electronically balanced. The remote controls, which are duplicated for both Line 1 and Line 2, are described below. [. . . ] The input of the reverse talkback inputs will be heard through both sides of the headphones. LEVEL Control This controls the level of output fed to the output socket. External Inputs 10 MONITOR SELECTOR Each of the monitor/headphone circuits described above may select Ext as an input source. The Ext source has four inputs which may be selected by depressing the desired switch: Ext1 to Ext4. Depressing one of these switches automatically deselects the previously selected Ext input, therefore only one of the four Ext inputs may be selected at any time. [. . . ]