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Calrec S2 Operator's Manual

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S2
OPERATORS MANUAL
Calrec Audio Ltd
Nutclough Mill
Hebden Bridge
West Yorkshire
HX7 8EZ
England
UK
Tel: +44 (0) 1422 842159
Fax: +44 (0) 1422 845244
Email: enquiries@calrec.com
Website: www.calrec.com

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  • Page 1 OPERATORS MANUAL Calrec Audio Ltd Nutclough Mill Hebden Bridge West Yorkshire HX7 8EZ England Tel: +44 (0) 1422 842159 Fax: +44 (0) 1422 845244 Email: enquiries@calrec.com Website: www.calrec.com...
  • Page 2 ................................................
  • Page 3 Modifications to this equipment by any party other than Calrec Audio Limited may invalidate EMC and safety features designed into this equipment. Calrec Audio Limited can not be liable for any legal proceedings or problems that may arise relating to such modifications.
  • Page 4 ................................................Important Health and Safety Information * This equipment must be EARTHED. * Only suitably trained personnel should service this equipment. * Please read and take note of all warning and informative labels. * Before starting any servicing operation, this equipment must be isolated from the AC supply (mains) by removing the incoming IEC mains connector.
  • Page 5 Supply of replacement components Supply of documentation Technical advice by telephone If you have any other issues regarding your Calrec purchase, then please contact us and we will do our best to help. Calrec welcomes all Customer feedback. Stephen Brant...
  • Page 6 If you have a problem which cannot be solved without the reference to this user manual or the full technical handbook, then please contact either the distributor from whom you bought this console or the Customer Support team at the factory. A full list of all the Calrec distributors is available on the Company website at www.calrec.com Factory based customer support engineers can be contacted by telephone during normal office hours, or outside hours, a message can be left on the answering machine.

  • Page 7: Table Of Contents

    ................................................CONTENTS 1.0 Typical console layout page 9 2.0 Panels & Modules list 3.0 Installation & Commissioning 4.0 Operation 5.0 General Information 6.0 DIL switch settings User Registration Signal Flow diagrams see separate dwgs...
  • Page 8 ................................................

  • Page 9: Typical Console Layout

    ................................................1.0 Typical Console Layout...
  • Page 10 ................................................1.0 TYPICAL LAYOUT...
  • Page 11 ................................................2.0 Panels & Modules Description...
  • Page 12 ................................................MODULES LIST 2.1 PQ4068 Mono channel page 2.2 PQ4069 Stereo channel 2.3 BQ4070 Stereo Line channel 2.4 XL4071 Group 2.5 LC4341 Main output 2.6 IC4061 Channel/Group fader 2.7 IM4064 Main output fader 2.8 IG4062 VCA Group Twin fader 2.9 IV4063 VCA Master fader 2.10 TY3660 Tone/Talkback...
  • Page 13 ................................................2.19 MU3663 Stereo peak programme meter L/R 2.20 MU3801 Stereo peak programme meter M/S 2.21 MU3804-2 Large Stereo bargraph 2.22 MU4333-2 Large Stereo bargraph - Revsd. cols. 36 2.23 MU3807-2 Small Stereo bargraph 2.24 MU4078 Phase Bargraph 2.25 MU3694 2 VU meters 2.26 MU3695 2 Mono peak programme meters 2.27 ML3679 Studio LS control...
  • Page 14 ................................................2.1 PQ4068 MONO CHANNEL Routing to: 2 Main Stereo outputs, Red LED’s 8 Stereo groups, Yellow LED’s Optional assignable routing to 24 or 32 Multitrack recording outputs normally from Post channel Pan but switchable to Pre Fader (or Pre Eq internally) or Direct Output (post Direct Output level control).
  • Page 15 ................................................
  • Page 16 ................................................2.2 PQ4069 STEREO CHANNEL Routing to: 2 Main Stereo outputs, Red LEDs 8 Stereo Groups, Yellow LEDs Optional assignable routing to 24 or 32 Multitrack recording outputs normally from Post channel Pan but switchable to Pre Fader (or Pre Eq internally) or Direct Output (post Direct Output level control). Pre/post fader: Red/green LEDs.
  • Page 17 ................................................
  • Page 18 ................................................2.3 BQ4070 STEREO LINE CHANNEL Routing to: 2 Main Stereo outputs, Red LEDs 8 Stereo Groups, Yellow LEDs Optional assignable routing to 24 or 32 Multitrack recording outputs normally from Post channel Pan but switchable to Pre Fader (or Pre Eq internally) or Direct Output (post Direct Output level control). Pre/post fader: Red/green LEDs.
  • Page 19 ................................................
  • Page 20 ................................................2.4 XL4071 STEREO GROUP Routing to: 2 Main Stereo outputs, Red LEDs Other 7 Stereo Groups, Yellow LEDs Optional assignable routing to 24 or 32 Multitrack recording outputs normally from Post channel Pan but switchable to Pre Fader (or Pre Eq internally) or Direct Output (post Direct Output level control).
  • Page 21 ................................................
  • Page 22 ................................................2.5 LC4341-3 MAIN OUTPUT Routing from Output 2 to Output 1 only. Red LED. Main output compressor, may be used as a limiter (50/1 ratio). 20dB gain reduction Yellow bargraph. Normally pre fader - can be set post fader. Can be linked between outputs.
  • Page 23 ................................................LC4341-3...
  • Page 24 PFL button routes channel or group signal to PFL loudspeaker{s} (in-place stereo). Momentary button can be internally set for push-push electronic latching. Calrec Auto Gain Ranging This unique principle allows the channel to operate with a normal headroom of 28dB above chosen setting.
  • Page 25 ................................................IM4064 MAIN OUTPUT FADER Scribble strip. FADER - with +10dB in hand - can be reverse scale to order. PEAK - Red LED illuminates when pre or post fader signal approaches within 3dB of clipping. ON - Green LED illuminates when fader is open. PFL button routes main signal to PFL loudspeaker{s} (in-place stereo).
  • Page 26 ................................................IG4062 VCA GROUP TWIN FADER Scribble strip. FADER - with +10dB in hand - can be reverse scale to order. CUT button cuts channels & groups selected to VCA fader illuminating their LEDs. Yellow LED. AFL button puts channels & groups selected to VCA fader to the AFL monitor illuminating their LEDs.
  • Page 27 ................................................IV4063 VCA MASTER FADER Scribble strip. FADER - normally operated at top of travel - can be reverse scale to order. BUTTONS 1 to 10 to select which VCA Group faders the Master is acting upon. Green LEDs.
  • Page 28 ................................................2.10 TY3660 TONE/TALKBACK Master AFL indicator illuminates red when any AFL button is selected or a multitrack AFL is switched in. Also illuminates AFL LED on ML3661 Monitor Loudspeaker panel. ON AIR button disables all tone and main talkback functions with remote indication. Red LED.
  • Page 29 ................................................2.11 ML4230 MONITOR L.S. SELECTOR 1: 16 selections as show. 8 external stereo. Green LEDs. SELECTOR 2: 32 selections as shown. 14 external stereo. Facility for bringing in selections from a LS2 panel via SEL 3. Green LEDs. MAIN selector: 6 selections: SEL 1 & 2 & Main 1 outputs. Red LEDs. LS Mode Selections: 7 buttons with Red LEDs and AFL over-ride red LED.
  • Page 30 ................................................2.12 ML4231 LOUDSPEAKER 2 SELECTOR 3: 24 stereo external inputs. Green LEDs. MAIN Selector: Facility for selecting SEL 1 & SEL 2 outputs from Monitor LS module as well as local SEL 3 output. LS Mode Selector: 4 buttons with Red LEDs. BALANCE control +3dB.
  • Page 31 ................................................2.13 WI4696 SURROUND MONITOR DESK MODE SELECTOR: Stereo: Desk normal & monitor controlled by MONITOR LOUDSPEAKER panel. Four Track: Desk outputs M1: L-R, M2:CENTRE, MONO SURROUND MONITOR controlled by this panel. Mono surround to L & R Surround LS. Five Track: As 4-track except that L &...
  • Page 32 ................................................2.14 MY3681 MULTI-TRACK BARGRAPH/CONTROL Each Bargraph Control panel provides control over 8 tracks. The Bargraph Meters are GREEN from -oo to -6, YELLOW from -6 to 0, and RED from 0 to +6. There are usually 3 panels for 24 tracks and 4 for 32 track systems. ROUTING/AFL Buttons: These normally display the current ROUTING assignment for the current selected channel or group (forward interro-...
  • Page 33 ................................................2.15 AY3938 MULTITRACK ERROR / RESET This module provides ancilliary control buttons for Multitrack Operation. Provisionally, the two buttons are RESET and CLEAR ROUTE. The RESET button controls the Computer Sub System, and forces an automatic restart, recalling the last known (saved) ROUTE and AFL settings.
  • Page 34 ................................................2.16 MY3680 METER SELECTOR (General) 2.17 MY3875 METER SELECTOR (Principal selections) 2.18 MY3876 METER SELECTOR (Main function) Selections from labelled sources. Yellow LEDs - Electronic cancelling set (latching on MY3876). M/S latching & S+20. Red LEDs.

  • Page 35: Mu3663 Stereo Peak Programme Meter L/R

    ................................................2.19 MU3663 STEREO PPM L/R 2.20 MU3801 STEREO PPM M/S MU3663 Stereo PPM with Red/Green needles and illumination. MU3801 Stereo PPM with White/Orange needles and illumination. Internal PPM drivers. MU3663/ MU3801...

  • Page 36: Mu3804-2 Large Stereo Bargraph

    ................................................2.21 MU3804 LARGE STEREO BARGRAPH 2.22 MU4333 LARGE STEREO BARGRAPH - (Revsd. cols) 2.23 MU380SMALLSTEREO BARGRAPH Twin LED bargraphs - 40 LED's each for good resolution. Left hand bar is RED. Right hand bar is GREEN. (reversed colours on MU4333) Bars brighten at 0dB representing +6 or +8 dBu for PPM or +4dBu (SCALE 0) for VU (set internally).

  • Page 37: Mu4078 Phase Bargraph

    ................................................2.24 MU4078 PHASE BARGRAPH LED Bargraph. Upper section representing good phase coherence is GREEN. Lower section representing poor phase coherence is RED. Spot moves dynamically.

  • Page 38: Mu3694 2 Vu Meters

    ................................................2.25 MU3694 2 VU METERS VU meters with illumination. Internal buffer amplifiers.

  • Page 39: Mu3695 2 Mono Peak Programme Meters

    ................................................2.26 MU3695 2 MONO PEAK PROGRAMME METERS Mono PPMs with white needles and illumination. Internal PPM drivers.

  • Page 40: Ml3679 Studio Ls Control

    ................................................2.27 ML3679 STUDIO LS CONTROL 6 Electronic cancelling inputs - Yellow LEDs including 3 external inputs. Gain controls 0dB to OFF. CUT button with Yellow LED - cuts LS automatically when any channel selected to Mic and routed to the Main output either directly or via a group, is opened.

  • Page 41: Dl3678-2 Stereo Compressor/Limiter

    ................................................2.28 DL3678-2 STEREO COMPRESSOR/LIMITER Stereo Limiter: Ratio fixed 100/1 Threshold -4/+16dBu variable Attack fixed 100 u-secs Recovery 0.075 to 4 secs variable with AUTO facility: 0.1 to 1.5 secs (programme dependent) Peak Limit Yellow LED indicator Limiter On button with Yellow LED indication Stereo Compressor: Ratio 1.5/10 variable...

  • Page 42: Df4041-2 Expander/Gate

    ................................................2.29 DF4041-2 EXPANDER/GATE Stereo Expander: Ratio Normal, varies with level 1.5/1 to 5/1. Fixed 2/1 (button) Threshold 0/-40dBu variable Attack Normal 4 m-sec. FAST (button) 50 u-sec Recovery 75ms to 4 sec variable Depth 0/40dB variable (extent of expansion below threshold) Bargraph Up to 20dB gain reduction...

  • Page 43: Qf4042 Equaliser

    ................................................2.30 QF4042 PARAMETRIC EQ & FILTERS Stereo Filters / Equaliser: 2 band parametric filters: HF (low pass) 12dB/octave LF (high pass) 18dB/octave 4 band parametric equaliser: + _ 16dB max at selected frequencies Exclusive lift/cut law allows fine control near centre and low noise in detent.

  • Page 44: Ls3803 Pfl Loudspeaker

    ................................................2.31 LS3803 PFL LOUDSPEAKER Module can be set for Left, Right or Mono use. Module can receive Reverse talkback plus an extra intercom signal if required.

  • Page 45: Tb3927 Tb Microphone

    ................................................2.32 TB3927 EXTERNAL TALKBACK MICROPHONE For those customers requiring a microphone projecting from the console on a stalk.

  • Page 46: Zn3018-4 Mains Power Unit

    ................................................2.33 ZN3018-4 MAINS POWER UNIT ZN3018-4 A Calrec designed special unit to provide +16 volts audio power, 8 volts logic power (stabilised in modules at 5 volts where required) and 48 volts phantom power suitable for approximately 16 channels each in a typical console. It is recommended that there be one “Hot”...

  • Page 47: Internal/Rear Card List

    ................................................2.34 INTERNAL/REAR CARDS, PANELS & POWER SYSTEM XN4342 Internal PFL/AFL/Mix minus card RX3651 Multitrack matrix card (option) RL4343 Multitrack outputs card (option) RY3696 Multitrack functions card (option) UN3551 Multitrack processor card (option) ZN3564 Multitrack 5V stabiliser card (option) ZN3693 Power Distribution Unit HN3919 Dynamics connections card...
  • Page 48 ................................................

  • Page 49: Installation & Commissioning

    ................................................Installation & Commissioning...
  • Page 50 ................................................LAYOUT OF CONNECTORS...
  • Page 51 CONNECTORS TYPES The connectors fitted to the console are VARICON 38 WAY & 56 WAY FIXED PLUGS (MALE). The mating free socket details are listed below:- Component Calrec Ref. Edac Ref. Varicon 38 way free socket 400-040 516-038-000-401 Varicon 38 way metal hood...
  • Page 52 ................................................CABLE TYPES (cont.) For lines at standard level a FOIL SCREENED SOLID CONDUCTOR MULTICORE CABLE (BBC TYPE) is recommended. e.g. CANFORD AUDIO KSM type. Size Ref. BBC ref. KSM 5-pair 31-305 BBC PSN 10/3 KSM 10-pair 31-310 BBC PSN 20/4 KSM 16-pair 31-316 BBC PSN 32/1...
  • Page 53 ................................................EARTHING The earthing system within the console is the subject of great care and design. The analogue centre rail, the dump CR and the logic 0 volts (0L) are kept separate from the chassis throughout and are only brought together at the power supply interface next to the TECHNICAL EARTH bolt.
  • Page 54 ................................................DIMENSIONS Overall console dimensions including stand. 24 channel 1320 mm 36 channel 1686 mm 48 channel 2052 mm 60 channel 2418 mm 72 channel 2784 mm Approximate console weights: 24 channel 145Kg 36 channel 175Kg 48 channel 205Kg 60 channel 235Kg 72 channel 265Kg...
  • Page 55 ................................................POWER SYSTEM The console is designed to operate with the following power supplies: -16A/CR/+16A analogue power 8L/0L logic power 48V/CR microphone phantom power The +16A is used internally in the modules to derive +10V and -10V stabilised reference voltages and also +5A (and sometimes -1A or -2A) for CMOS analogue switches. The 8L is internally stabilised to 5L for logic circuits.
  • Page 56 ................................................3.11 PRE POWER CHECKS Before connecting mains power to the power units ensure that the voltage tapping on each unit is set for the mains voltage in use. This is done at the factory prior to shipping for the given customer. Confirmation is given by a label on the back of each power supply unit.

  • Page 57: Operation

    ................................................4.0 Operation...
  • Page 58 ................................................GAIN & INPUT SETTINGS Connect a source to a channel input & select as follows:- Mono Mono Mic 1 - ensure LINE & IP2 are not pressed (red LED) Mono Line 1 - select LINE (green LED) and ensure IP2 is not pressed (Mic or Line 2 - select MIC or LINE &...
  • Page 59 ................................................MONITOR Select STEREO LINE on the LS1 MONITOR panel & ensure no other buttons are pressed. The source should now be heard in the loudspeakers. The monitor panel allows selection via 2 selector banks of Group Outputs, Auxiliary outputs as well as principal console outputs, Desk or Line (before and after tone insertion) together with a range of external inputs chosen by the customer.
  • Page 60 ................................................EQUALISATION & FILTERS Now the source can be metered as well as heard it is possible to experiment with equalisation & filters. Select EQ (red LED) and try the effect of the filters first. The low frequency (high pass) filter can be set 47Hz or 82Hz on 2 separate buttons & 120Hz when both buttons are selected together.
  • Page 61 ................................................MULTITRACK Channels & Groups settings The signal input to the multitrack system from a Channel of Group is normally post fader but can be set to pre fader or post The Direct Output control if a control is required. The input Assign button from the Channel or Group is red and marked M/T.
  • Page 62 ................................................DIRECT OUTPUTS & MIX MINUS Each channel & group has a Direct Output - at balanced line level with a gain control, pre/post fader select and Talkback (momentary) select buttons. There is 10dB in hand on the gain control. The pre button position may be internally selected to be pre eq or pre fader.
  • Page 63 ................................................4.11 TALKBACK The console is fitted with a talkback microphone and amplifier with automatic gain control. The gain can be set for a given operator on a separate gain control and should then remain reasonably constant despite his movements. The talkback can be selected to several destinations.
  • Page 64 ................................................The compressor has the following controls:- Ratio: 1.5/10 variable Threshold: -20/+10dB variable Attack: Normal 4 m sec at 5:1 Fast 0.2 m sec at 5:1 Recovery: 0.1 to 4 secs variable with AUTO facility which is 0.1 to 1.5 secs dependent on programme Make-up gain: 0 to 20dB variable Voice-over:...

  • Page 65: General Information

    ................................................5.0 General Information...
  • Page 66 ................................................SPECIFICATION Measurements are with 22-22KHz filters unless otherwise stated. All specifications are in the frequency range 40-15KHz unless otherwise stated. Measurements specified are with equaliser and dynamics out of circuit. 0dBu = 0.775 volts RMS dBq = CCIR QUASI-PEAK Normal operating level = 0dBu (peak +8dBu or +6dBu) Inputs Microphones:...
  • Page 67 ................................................Frequency Response Into 600Ω or 10KΩ in parallel with 22nF all settings. Mics & Lines +0.25dB 40Hz to 15KHz Microphone & Line 1 inputs have fixed LF/HF filters. (measured to main O/P) 12dB/octave < 4dB at 10Hz < 20dB at 100KHz Phase Difference Left to Right <...
  • Page 68 ................................................REWIRING & EXCHANGING MODULES Modules and circuit cards may be removed and plugged in with the console switched on. It is advisable however to switch off before exchanging the 5 volt stabiliser and the processor cards in the multitrack section (if fitted). STEREO WIDTH The stereo width circuit may be seen in the CIRCUITS DESCRIPTION section - No.
  • Page 69 L & R via the M/S button to the formulae above. DESK & LINE OUTPUTS All Calrec consoles have Desk & Line Main Outputs both Stereo & Mono. This is essentially a BBC technique where the alignment tone is injected after the desk outputs and before the line outputs (which follow the desk outputs).
  • Page 70 ................................................For these rare situations a new techniques in design has been evolved at Calrec which allows the superb noise figure to be uncompromised for the majority of the time (more than 99.9%). Rather than have the headroom available the whole time (with a compromised noise figure) it is only made available for the brief period of high signal input, by exchanging input gain for fader gain.
  • Page 71 ................................................5.11 SURROUND SOUND A button on the channel modules marked SURROUND directs left and right signals to odd Groups and Main only and directs centre and surround signals to even Groups and Main. A Front/Back pan allows the channel signal to be panned between front (L, R and centre) outputs and Surround output in addition to the normal left/right pan.
  • Page 72 ................................................
  • Page 73 ................................................
  • Page 74 ................................................

  • Page 75: Dil Switch Settings

    ................................................6.0 DIL Switch Settings...
  • Page 76 ................................................PQ4068 MONO MIC/LINE CHANNEL...
  • Page 77 ................................................PQ4068 MONO MIC/LINE CHANNEL DIL SWITCHES PRE EQUALISER FEED to INSERT GO OUTPUT:- DOWN = ON = PRE EQUALISER FEED to INSERT GO when no insert selected. UP = OFF = No feed to INSERT GO when no insert selected. SW21 LINE 2 to AUXILIARY 8 OUTPUT:- LEFT = DISABLE...
  • Page 78 ................................................PQ4069 STEREO MIC/LINE CHANNEL...
  • Page 79 ................................................PQ4069 STEREO MIC/LINE CHANNEL DIL SWITCHES PRE EQUALISER FEED to INSERT GO OUTPUT:- 1 = LEFT FEED } UP = ON = PRE EQUALISER FEED to INSERT GO when no insert selected. 2 = RIGHT FEED } DOWN = OFF = No feed to INSERT GO when no insert selected. PHANTOM POWER:- 1 = MIC INPUT L } UP = OFF...
  • Page 80 ................................................BQ4070 STEREO LINE CHANNEL...
  • Page 81 ................................................BQ4070 STEREO LINE CHANNEL DIL SWITCHES PRE EQUALISER FEED to INSERT GO OUTPUT:- 1 = LEFT FEED } UP = ON = PRE EQUALISER FEED to INSERT GO when no insert selected. 2 = RIGHT FEED } DOWN = OFF = No feed to INSERT GO when no insert selected. SW21 LINE 2 to AUXILIARY 8 OUTPUT:- LEFT = DISABLE...
  • Page 82 ................................................XL4071 STEREO GROUP...
  • Page 83 ................................................XL4071 STEREO GROUP DIL SWITCHES MONITOR OUTPUTS:- Outputs used usually for group metering. 1 = LEFT } UP = FEED from POST FADER. 2 = RIGHT } DOWN = FEED from DIRECT OUTPUT. PRE FADER FEED to INSERT GO OUTPUT:- 1 = LEFT } = OFF } PRE FADER STANDING FEED to INSERT GO OUTPUT when 2 = RIGHT }...
  • Page 84 ................................................LC4341 STEREO MAIN OUTPUT...
  • Page 85 ................................................LC4341 STEREO MAIN OUTPUT DIL SWITCHES IDENT SEQUENCE:- 1 = LEFT } RIGHT = OFF 2 = RIGHT } LEFT = ON When sequence is on TONE to MAIN OUTPUT.
  • Page 86 ................................................IC4905 (REV) CHANNEL/GROUP FADER...
  • Page 87 ................................................IC4905 (REV) CHANNEL/GROUP FADER DIL SWITCHES PFL button MOMENTARY or LATCHING. RIGHT = PFL MOM PFL button MOMENTARY. LEFT = PFL LATCH PFL button LATCHING. SW2/1 PFL CANCEL when fader opens. DOWN = OFF. = ON = Opening fader cancels PFL selection if latched. SW2/2 PFL timed AUTO RESET.
  • Page 88 ................................................IM4064 MAIN FADER...
  • Page 89 ................................................IM4064 MAIN FADER DIL SWITCHES PFL button MOMENTARY or LATCHING. RIGHT = PFL MOM PFL button MOMENTARY. LEFT = PFL LATCH PFL button LATCHING. SW2/1 PFL CANCEL when fader opens. DOWN = OFF. = ON = Opening fader cancels PFL selection if latched. SW2/2 PFL timed AUTO RESET.
  • Page 90 ................................................IG4062 VCA GROUP TWIN FADER...
  • Page 91 ................................................IG4062 VCA GROUP TWIN FADER DIL SWITCHES SW10 AFL 1 button MOMENTARY or LATCHING. SW12 AFL 2 button MOMENTARY or LATCHING. LEFT = AFL LATCH AFL button LATCHING. RIGHT = AFL MOM AFL button MOMENTARY. SW13 AFL timed AUTO RESET. RIGHT = OFF = No effect.
  • Page 92 ................................................TY3660 TONE/TALKBACK...
  • Page 93 ................................................TY3660 TONE/TALKBACK DIL SWITCHES SW41 OSCILLATOR LEVEL:- LEFT = 0dBu with TRIM CONTROL ident at 12 o'clock. RIGHT = +6dBu with TRIM CONTROL ident at 12 o'clock. SW39 GLITS/E.B.U. :- LEFT = GLITS - BBC stereo ident sequence. RIGHT = E.B.U.
  • Page 94 ................................................ML4230 MONITOR LS...
  • Page 95 ................................................ML4230 MONITOR LS DIL SWITCHES SW61 PFL to small loudspeakers:- PFL LEFT } LEFT = OFF. PFL RIGHT } RIGHT = ON = PFL mixed in to MONITOR FEED to small loudspeakers. SW62 Optional -3dB on MONO SELS :- = OFF.
  • Page 96 ................................................ML4231 LS2 MONITOR...
  • Page 97 ................................................ML4231 LS2 MONITOR DIL SWITCHES SW62 Optional -3dB on MONO SELS :- = OFF. DOWN = ON which reduces meter levels -3dB when a mono source & M/S are selected (to correct the M level).
  • Page 98 ................................................MY3680 METER SELECTOR - FULL FUNCTION...
  • Page 99 ................................................MY3680 METER SELECTOR - FULL FUNCTION DIL SWITCHES SW13 AUTO SWITCH to M/S for MONO SELS :- LEFT = OFF No effect. RIGHT = ON Metering is automatically changed over to read M and S when a mono source is selected (M/S button illuminates).
  • Page 100 ................................................MY3875 METER SELECTOR - PRINCIPAL FUNCTION...
  • Page 101 ................................................MY3875 METER SELECTOR - PRINCIPAL FUNCTION DIL SWITCHES SW13 AUTO SWITCH to M/S for MONO SELS :- LEFT = OFF No effect. RIGHT = ON Metering is automatically changed over to read M and S when a mono source is selected (M/S button illuminates).
  • Page 102 ................................................MY3876 METER SELECTOR - MAIN FUNCTION...
  • Page 103 ................................................MY3876 METER SELECTOR - MAIN FUNCTION DIL SWITCHES SW13 AUTO SWITCH to M/S for MONO SELS :- LEFT = OFF No effect. RIGHT = ON Metering is automatically changed over to read M and S when a mono source is selected (M/S button illuminates).
  • Page 104 ................................................MU3804 RED/GREEN STEREO BARGRAPH...
  • Page 105 ................................................MU3804 RED/GREEN STEREO BARGRAPH DIL SWITCHES +6dBu at the scale "0" position (PPM only):- LEFT BAR } = ON = +6dBu at scale "0". RIGHT BAR } DOWN = OFF = +8dBu at scale "0". PPM/VU characteristics, LEFT BAR :- LEFT PPM.
  • Page 106 ................................................MU4333 LARGE STEREO BARGRAPH (REV. COL.)
  • Page 107 ................................................MU4333 LARGE STEREO BARGRAPH (REV. COL.) DIL SWITCHES +6dBu at the scale "0" position (PPM only):- LEFT BAR } = ON = +6dBu at scale "0". RIGHT BAR } DOWN = OFF = +8dBu at scale "0". PPM/VU characteristics, LEFT BAR :- LEFT PPM.
  • Page 108 ................................................MU3807 STEREO PFL BARGRAPH...
  • Page 109 ................................................MU3807 STEREO PFL BARGRAPH DIL SWITCHES +6dBu at the scale "0" position (PPM only):- LEFT BAR } = ON = +6dBu at scale "0". RIGHT BAR } DOWN = OFF = +8dBu at scale "0". PPM/VU characteristics, LEFT BAR :- LEFT PPM.
  • Page 110 ................................................ML3679 STUDIO LS SELECTOR...
  • Page 111 ................................................ML3679 STUDIO LS SELECTOR DIL SWITCHES CUT TALKBACK option:- = OFF No effect = TALKBACK heard. DOWN = ON TALKBACK as well as loudspeaker signals cut by cut button and REMOTE CUT.
  • Page 112 ................................................DL3678 COMPRESSOR/LIMITER...
  • Page 113 ................................................DL3678 COMPRESSOR/LIMITER DIL SWITCHES "M" detection:- DOWN = OFF. = ON Detection of reduced mono signal into side chain (see note). N.B. The compressor and limiter normally respond to the higher of the left and right signals. SW2 allows the mono reduction of left and right (-3dB) to take control it the stereo coherence is such that this exceeds left or right.
  • Page 114 ................................................Notes:...

  • Page 115: User Registration

    Completion of this registration form will ensure that we send all technical correspondence directly to you at the address you have indicated. The form, once completed should be returned to Calrec at the following address. User Registrations Calrec Audio Ltd...
  • Page 116 ................................................
  • Page 117 ................................................Notes:...
  • Page 118 Calrec Audio Ltd. reserve the right to change specifications without notice. E & O.E.  2000 Calrec Audio Ltd (926-002 ISS 2)

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