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32    RP1 

Remote Production System

Installation

FIBRE SFP CONNECTIVITY

Optical SFP modules for fibre 

connectivity can be used for console 

to processing core, router to router, 

and router to I/O connections. 

Fibreconnectivityisrequiredwhenthe
cablerunbetweenunitsexceedsthe90m
maximumpermissiblelengthforCat5e/
Cat6coppercabling.Fibrecanalsobe
usedforshorterrunsifitissimplythe
preferredmedium.

Note,thissectiononlyconcernsfibre
connectionsmadeviaSFPs.LikeallI/O
boxes,MADIunitshavepluggableSFPs
fortheirHydra2connectionstorouters,
buttheymayalsohavefibreconnectors
thatpasstheactualMADIaudioformat
inandoutofthesystem.TheMADII/O
formatfibreconnectorsareofafixedtype
suchasFDDI.VariousMADII/Oboxes
areavailabletoprovidedifferenttypes
ofMADIfibreinterface.Pleasereferto
theHydra2installationmanualformore
detailsonMADII/Ooptions.

SinglemodevsMultimode

ThecorewithinMultimodefibreis
relativelythickwhencomparedto
Singlemode.Lighttravelsthrough
Multimodefibreatmultipleangles,
‘bouncing’offthesidesofthecoreasit
travels,takingmultiplepathsor‘modes’of
varyinglengthfromoneendtotheother,
resultinginpulsesbeinglengthenedas
theytravel.Singlemodefibrehasavery
finecoreandlighttravelsinasingle,direct
pathfromoneendtotheotherwithout
affectingpulselength.Theresultisthat

Singlemodefibrehasahigherbandwidth
capacityand,importantly,lowsignal
lossallowingmuchgreaterdistancesto
beachieved.Lightcanbetransmitted
intoMultimodefibreusingLEDsor
lowpoweredlaserswhilstSinglemode
requiresahigherpoweredlaser.

CalrecrecommendtheuseofSinglemode
fibrewheneverpossibleinorderto
maximisetheflexibilityinthelocationof
hardwareandmaintainuniformityacross
thesystembyusingasingletype.Ifa
Multimodeinfrastructureisinplace,fibre
length,thenumberofinter-connects
andequipmentlocationbecomemore
important.

SFPmodulesareavailableforboth
SinglemodeandMultimodefibretypes.
Itisimportanttoselectthecorrect
SFPforthetypeoffibrebeingusedin
theinstallation.Ifusingamixtureof
SinglemodeandMultimodefibre,itis
importanttoensurethecorrectSFPsare
matchedtothecorrectfibretype.

Identification

Thereleasebutton/handlesoffibreSFPs
arecolourcoded-blueforSinglemode,
blackforMultimode.BlueLCconnectors,
asshownhere,shouldbeusedto
terminateSinglemodefibreandbeige
colouredconnectorsforMultimode.

DuplexConnectors/Terminations

StandardCalrecfibreSFPs,both
MultimodeandSinglemode,useduplex
LCconnectors.

Theduplexterminationrequirestwofibres
perconnection,oneisasendpath,the
otherisareceivepath.Whenterminating
thefibre,thesendfromoneendshould
connecttothereceiveoftheotherand
thereforethey‘cross-over’,terminatedAto
BandBtoA.

SingleStrand,Bi-DirectionalSFPs

Toreducetheamountoffibre,Calrec
cansupplySinglemodeSFPsthatsend
andreceiveoverasingle,orsimplexLC
connector.Inordertobeabletopass
datainbothdirectionsoverasingle
strand,thelighttravellinginonedirection
needstobeofadifferentwavelengthto
thelighttravellingintheotherdirection.
Therefore,bi-directionalSFPscomeas
eithertypeAortypeB(asindicated
byanAorBattheendofthemodel
number)andtheyneedtobepairedup;
afibreshouldconnectbetweenatype
AandatypeB,andnotbetweentwo
Bi-DirectionalSFPsofthesametype/
wavelength.Theunitsarecolourcoded
toaididentificationbetweenAtypes&B
types.

SFPFibreSpecifications

Specificationsareshowninthetable
totheright.Themaximumdistances
shownhereassumeasinglepoint-to-
pointconnectionwithnointermediary
interconnections.Lossesshouldbe
measuredacrossthetotalsignalpath
includinginterconnectsbetweenpointsof
SFPtransceiverconnection.Lossesneed
tobelessthantheopticalpowerbudget
oftheSFPtransceiversbeingused.

DUPLEX LC FIBRES CORRECTLY TERMINATED A TO B & B TO A

BI-DIRECTIONAL LC FIBRE CORRECTLY CONNECTED, TYPE A TO TYPE B

A

A

B

B

A

B

Содержание RP1

Страница 1: ...calrec com Remote Production System REMOTE PRODUCTION RP1 SYSTEM MANUAL V1 1...

Страница 2: ...national usage Calrec Audio Ltd reserve the right to change specifications without notice E O E The established policy of Calrec Audio Ltd is to seek improvements to the design specifications and manu...

Страница 3: ...able Routing Considerations 30 Termination Strain Relief 30 Termination Pin Out 31 Testing certification 31 Temporary Reusable Cables 31 Fibre SFP Connectivity 32 Singlemode vs Multimode 32 Identifica...

Страница 4: ...ing Screen 69 Selecting Sources and Destinations 69 Hydra2 Patchbays 71 Protect a Patch from Memory Loads 72 Access Processing 73 Access Overview 74 Access Compressor 75 Compressor Limiter Controls 75...

Страница 5: ...ost Console 107 Loading a Show Memory from the RP1 Unit 107 What happens when Independence is turned OFF on the RP1 unit 107 What happens when the Host Console Hot Swaps 107 Viewing Paths on the Host...

Страница 6: ...6 RP1 Remote Production System...

Страница 7: ...calrec com RP1 INFORMATION...

Страница 8: ...act enquiries calrec com Whenever you contact Calrec Customer Support please have the following information to hand Name Company Email Address Full details of enquiry e g fault report Serial number of...

Страница 9: ...apping Calrec Audio Limited can supply anti static wrapping upon request This applies particularly to digital products due to the types of devices and very small geometries used in their fabrication a...

Страница 10: ...ventilation slots to be blocked Do not leave the equipment powered up with the dust cover fitted Cleaning For cleaning the front panel of the equipment we recommend using a soft anti static cloth lig...

Страница 11: ...1 Input channels 36 legs as mono stereo and 5 1 Mains Groups Max of 4 Mains and 8 Groups 12 legs as mono or stereo Auxes 64 legs as Direct or Mix minus outputs 64 legs as Insert sends 64 legs as Inse...

Страница 12: ...12 RP1 Remote Production System...

Страница 13: ...calrec com RP1 GETTING STARTED...

Страница 14: ...eliver these very exacting and precise requirements backed with Calrec s focus on high quality audio performance and reliability with fully redundant connectivity Remote broadcasting using RP1 means f...

Страница 15: ...technician to check on site connections Audio connections can be made and tested in advance of a broadcast and monitor feeds for on site commentators can also be made in advance The remote studio mixe...

Страница 16: ...ess EQ provides 2 band filter 4 band EQ for all remote faders and auxes Control from Calrec Assist only Access Expander Gate provides Expander and Gate facilities for remote faders and auxes Control f...

Страница 17: ...calrec com RP1 INSTALLATION...

Страница 18: ...ors The GUI connector is not currently used in the system The meter DVI provides up to 4 rows of pre defined metering to display up to 32 channels and 12 auxiliaries used in the system It also display...

Страница 19: ...ield and commentator microphones monitor feeds at the remote site 3 Remote audio is sent to the host using SDI over video codecs such as J2K AoIP 4 Studio programme audio feeds can be returned to the...

Страница 20: ...n Calrec Assist If the order that cards are fitted in the card slots is important in your installation please discuss this with your supplier prior to delivery If for any reason the card order needs t...

Страница 21: ...and M 02 right in the internal expansion I O patching lists as shown below This can be is connected to the console monitor L and R outputs or other path outputs if required Headphone Socket Level Con...

Страница 22: ...22 RP1 Remote Production System Installation HYDRA2 EXPANSION OPTIONS CONNECTING RP1 TO AN EXTERNAL I O BOX CONNECTING RP1 TO I O BOXES VIA H2HUB...

Страница 23: ...SFP on RP1 Connection from secondary Hydra2 SFP on RP1 No connection FIXED FORMAT I O REAR CONNECTIONS FIXED FORMAT MADI HYDRA2 I O REAR INTERFACE Connection from primary Hydra2 SFP on RP1 Connection...

Страница 24: ...ely set the boxes into an off state to avoid issues in the event of multiple boxes being placed on the network with the same HID Before connecting each I O box to the network ensure you set a unique H...

Страница 25: ...hes are double the value of their less significant neighbour making the 8th most significant bit equate to a decimal value of 128 All fixed format I O box ID switches are orientated the same way thoug...

Страница 26: ...e Calrec labelling printed on the circuit board around the switch to clarify its orientation When viewing the card from the side the most significant bit is on the left and the least significant bit o...

Страница 27: ...to the reference source It is also recommended that backup sync sources and paths are considered to maintain full functionality in the event of the loss of any part of the facility s sync distributio...

Страница 28: ...er cards The modules can be fitted or removed whilst the system is powered up and without removing or opening any card or box casings Note the orientation of the SFP modules as shown in the illustrati...

Страница 29: ...then be removed by pulling on the handle Other SFPs automatically latch into place when they are inserted fully and they have a release button on their inside edge The fibre SFPs shown in the orienta...

Страница 30: ...g installation can seriously impact upon this The following are general rules of good practise but please refer to the cable manufacturer s information for comprehensive installation rules When runnin...

Страница 31: ...ted or certified prior to on site commissioning of the system Simple test devices that only check the pin out of the terminations are not sufficient to prove the performance and reliability of high sp...

Страница 32: ...ocation become more important SFP modules are available for both Singlemode and Multimode fibre types It is important to select the correct SFP for the type of fibre being used in the installation If...

Страница 33: ...pe Max Distance SX Multimode LC Duplex 7 5 dB 62 5 125 m 275 m 50 125 m 550 m LX Singlemode LC Duplex 8 dB 8 125 m 10 km LX Singlemode bi dir LC Simplex 11 5 dB 9 125 m 10 km LH Singlemode LC Duplex 2...

Страница 34: ...the core which can cause damage over time Avoid snagging on other cables or conduit which will cause excessive tensions when pulling and can cause kinks and excessive bends in the fibre When routing t...

Страница 35: ...r the end of the cable to avoid re contamination or insert the fibre back into the previously cleaned receptacle for immediate use Additional Notes Do not tip the can of clean dry air whilst aerosol s...

Страница 36: ...e AC power supplies A PSU failure or a loss of AC power input will generate a system status error message The two PSUs employ load sharing if one PSU fails the other will automatically take over the f...

Страница 37: ...1 10 9 8 7 6 5 4 3 2 1 Function Pin Relay 1 Common 1 Normally Open 14 Normally Made 2 Relay 2 Common 15 Normally Open 3 Normally Made 16 Relay 3 Common 4 Normally Open 17 Normally Made 5 Relay 4 Commo...

Страница 38: ...38 RP1 Remote Production System...

Страница 39: ...calrec com RP1 SYSTEM SOFTWARE UPDATES...

Страница 40: ...or power down during this process On every boot up the system checks its hardware is all on compatible software any mismatches detected are automatically reprogrammed this makes swapping out of hardwa...

Страница 41: ...calrec com RP1 CONFIGURING LAN PORTS CONNECTIVITY...

Страница 42: ...to carry out software updates The laptop will need to have at least one ethernet port or USB LAN connector which should be directly connected to the Setup LAN3 port on the front of the unit Note the...

Страница 43: ...ocol Version 4 TCP IPv4 Properties window shown above right Click on Use the following IP address radio button and enter an IP address in the same subnet of the system being connected to e g 192 168 1...

Страница 44: ...arate cable from the IP network switch at the host end into each console that will be connected to the RP1 Units The proprietary control data from to RP1 or the host console is converted into TCP IP f...

Страница 45: ...o the required addresses for interfacing to RP1 units The connection diagrams at the bottom of this page show the various levels of redundancy available for COMe processor cards Redundancy and Hot Swa...

Страница 46: ...s a support engineer to set up these aliases It should be noted that the older ETX processors only have a single network adapter they do not offer the same level of redundancy for the LAN ports that t...

Страница 47: ...are defined as lansettings 0 0 ip 10 10 10 1 255 255 255 0 static route 192 168 69 0 255 255 255 0 10 10 10 100 This configuration is currently entered using the various commands as described in the C...

Страница 48: ...48 RP1 Remote Production System...

Страница 49: ...calrec com RP1 SETUP VIA CALREC ASSIST...

Страница 50: ...splay resolution 1366 px x 768 px Minimum Storage Required 3 5 GB free disk space is required for the Calrec Assist installation Starting Calrec Assist Open your Web browser e g Chrome and browse to t...

Страница 51: ...allowed from version 1 1 if the host is disconnected this allows the user to add the VCA Master value to the Remote fader value so that the remote fader can continue to be controlled at the same level...

Страница 52: ...altered by the user if required but it is recommended to write down the new IP address if changed See Configuring RP1 LAN Ports on page 44 for further information Synchronisation This screen lets the...

Страница 53: ...ated based on the consoles System ID which is currently set to a fixed value of 192 1 the HID number is based on the second byte of the System ID 256 so that it sits above the normal Hydra2 HID addres...

Страница 54: ...54 RP1 Remote Production System...

Страница 55: ...calrec com RP1 SHOWS...

Страница 56: ...able in the Shows List only the New and Import actions are possible New Show As part of the system a Templates folder containing default shows can be made for this desk type and can be used to create...

Страница 57: ...king on the Load icon in the footer This opens the Load Selected Show pop up and the user clicks the Load button as shown right This loads the show into Calrec Assist which then changes to the Setup F...

Страница 58: ...how into the shows list ready to be loaded and edited as required Export Show In order to export shows the user selects a show to be exported by clicking on it and then clicking on the Export icon in...

Страница 59: ...he Create Template button is clicked the currently loaded Active Show becomes a new template and the show is now saved as a CalrecShowTemplate file Edit Template Label Once a template exists in the te...

Страница 60: ...lates list ready to be used and edited as required as shown right Export Template In order to export templates the user selects a template to be exported by clicking on it and then clicking on the Exp...

Страница 61: ...calrec com RP1 SETUP PATHS FOR ACTIVE SHOW...

Страница 62: ...hannels in order to be processed and routed channels must be attached to faders to exist Faders can also be assigned to control aux outputs The Fader layout screen for RP1 has up to 72 virtual faders...

Страница 63: ...image above right shows the fader layout screen populated in this case with 16 mono channels 1 stereo channel and 1 surround channel placed on Layer 1A and 2 mono and 2 stereo aux outputs that have ju...

Страница 64: ...This allows the user to move paths to different faders as follows 1 Select one or more faders at least one of which must contain a path 2 Click on MOVE in the control screen footer and click on the fa...

Страница 65: ...ion cannot be undone 4 Click on DELETE in the pop up to remove the path from the fader or click on CANCEL to return to the fader layout screen without making any changes Layer Lock This allows the use...

Страница 66: ...ring listen locally to the Pre Fader position of the selected path s AFL button to change the monitoring listen locally to the After Fader position of the selected path s FADERS SURFACE Above these is...

Страница 67: ...e and a short description for the new user memory 3 Click on CREATE or CANCEL Loading a User Memory To load an existing user memory 1 Click on MEMORIES in the active show menu and a list of all user m...

Страница 68: ...shown below right Creating Multiple User Memories Best practice is to create one default user memory test it make any necessary changes and then use this as the basis for all other user memories with...

Страница 69: ...nd so altering these controls from any point on the surface will affect that feed for every instance of it across the surface and across the Hydra2 network The I O Patching Screen The I O patching scr...

Страница 70: ...screen Port Numbers The port number is a combination of the I O box hardware ID HID and the port number within the box See H2O user guide for more detailed information This is the port s native label...

Страница 71: ...ources from destinations Both are displayed within the centre columns with this option selected Hydra2 Patchbays In the images to the right you can see the use of Hydra2 patchbays The upper one shows...

Страница 72: ...e by multiple Hydra2 network users To Fix a patch 1 Select one or more patched destinations 2 Click FIX in the screen footer 3 To un fix the patch click on FIX again Isolating a Patch Isolating a patc...

Страница 73: ...calrec com RP1 ACCESS PROCESSING...

Страница 74: ...this is the Fader Information block which shows the Layer Fader Number User Label User Port of the currently selected path Inset in the block is a status window showing the width and various other sta...

Страница 75: ...CESS COMPRESSOR The resultant numerical values are shown in the top right hand corner of each control and also reflected on the graph The following controls are available Comp Lim1 In Out switch This...

Страница 76: ...e all expander gates within the link open regardless of the audio levels of their feeds Sidechain EQ SCEQ Dynamics units take copies of their input signals analyse them and work out how best to proces...

Страница 77: ...of each control and also reflected on the graph The following controls are available Expander Gate In Out switch This is shown in the function banner it switches the Expander Gate in or out of circuit...

Страница 78: ...graph instantly updates to reflect EQ parameter changes See band 1 selected above right EQ bands 2 5 can be set to any response type but good practice is to set them in a logical frequency based orde...

Страница 79: ...signed path The user can click and drag in the fader columns to modify the levels of each of those faders including the separate LoRo overall stereo mixdown fader level Note that downmix faders do not...

Страница 80: ...d to both sources Input Balance Width If the source is a stereo signal then additional controls to alter the left right balance of the sources and a width control allows the sources to be reduced to a...

Страница 81: ...calrec com RP1 ACCESS ROUTING...

Страница 82: ...e user to route to each aux send from the currently accessed path Note that Aux 1 and part of Aux 2 are shown routed Using the full path drop down box it is possible to select the individual legs of a...

Страница 83: ...the width of the direct output or select no output to remove it Direct Output Patching The direct output s patch destination is displayed Level Slide the level control or click on the or icons to alt...

Страница 84: ...84 RP1 Remote Production System...

Страница 85: ...calrec com RP1 BUSES OUTPUTS...

Страница 86: ...O patching for this to work Tone Select to inject tone into the direct output replacing the direct output feed with the correct tone for the path width A tone button applies a tone signal to that outp...

Страница 87: ...calrec com RP1 MONITORING...

Страница 88: ...evel when a PFL button is pressed PFL to Mon button When pressed sends the PFL signal to the console monitor rather than to a dedicated PFL speaker The remaining screen area is split into two pages th...

Страница 89: ...calrec com RP1 SYSTEM STATUS...

Страница 90: ...operate without intervention from the user The message should be checked as the system may be running on its secondary components Information Messages Inform the user when certain actions take place...

Страница 91: ...calrec com RP1 EXTERNAL METERING DISPLAY...

Страница 92: ...s respectively Note that the No Input text is replaced by the port number when ported or by the user label to aid path identification The 12 aux bus master meters are always present on the right hand...

Страница 93: ...calrec com RP1 SETUP REMOTE NETWORKS ON HOST H2O...

Страница 94: ...page 47 Sorting out the Host RP1 LAN addresses Prior to adding in the remote network into H2O the user needs to ensure that the LAN port addresses to be used are compatible for instance using the sam...

Страница 95: ...12 and 32 respectively for the initial release of RP1 User presses Ok to accept or Cancel to reject If Cancel pressed pop up closes The Pop up closes and the remote networks page shows the new remote...

Страница 96: ...number of remote auxes mono equivalent to the RP1 unit Use may edit the number of remote channels mono equivalent from the RP1 unit Note that validation will be required as each field is edited the IP...

Страница 97: ...calrec com RP1 OPERATION VIA HOST CONSOLE...

Страница 98: ...n and the remote aux masters in the right column shown right Selecting Remote Faders Once the user selects the remote faders block for the required RP1 from the left hand column a further pop up showi...

Страница 99: ...for remote fader usage it is recommended that output aux masters are not placed on Layer A If control of the aux masters is required from the RP1 unit they should be placed on any of the 36 Layer B fa...

Страница 100: ...e above right Clicking on the delete button opens a further pop up showing the selection of remote faders and or remote aux masters ready to be deleted as shown below right This will remove them from...

Страница 101: ...n the host console REMOTE NETWORKS SCREEN SHOWING CONNECTIVITY STATUS If the Block Fader Cut Control switch is OFF which is the case during setup the RP1 parameters are sent to the host console If the...

Страница 102: ...amount but note it only pairs the faders and cut on switches Pairing and Unpairing Procedures Go to Operate Fader Setup and click on the required TX fader the Select Action pop up appears as shown in...

Страница 103: ...e end The images right for the Accessed Path Processing Faders and below right for the Fader Surface pages of RP1 shows the result when a paired Fader Cut has been blocked by the host It can be seen t...

Страница 104: ...ol setting It is only when the Independence is turned OFF that the setting of the Block Fader Cut Control switch becomes relevant With Independence is turned ON the RP1 unit will continue with the cur...

Страница 105: ...ADERS SCREEN ON RP1 SHOWING VCA MASTER FROM HOST The image above shows the access faders screen with the fader now being controlled by a VCA master from the host Additional scales appear on the displa...

Страница 106: ...ator might have changed the VCA group structure or levels which will affect the RP1 display and if not blocked the fader settings would be transferred with the exception of the VCA master from RP1 uni...

Страница 107: ...ost if it isn t Note that if the RP1 unit is set to be independent settings are not transferred If the memory is not using a RP1 unit that is set to Try to Connect the memory will be loaded and the RP...

Страница 108: ...appear as shown below right It does show the network name for the RP1 unit and the path fader label or port label depending on the label selection As an example Rem Fdr26 on the RP1 unit named Rasput...

Страница 109: ...er Input Controls on Fader Wild Assign TFT Displays The TFT processing display in the Wild Assign of Apollo or Fader panel of Artemis appears as shown right for remote faders at the host As an example...

Страница 110: ...rotary control changes the focus window below to that aux as required Note the focus window also shows the network name of the RP1 unit being controlled Remote Fader Aux Route Controls on Fader Wild...

Страница 111: ...e that the stereo path mic gain control in column 2 is shown with its values as the image was captured with the Assign button held down to by pass the protection system Remote Fader Aux Send Strip Con...

Страница 112: ...mic gain 48v phantom power polarity invert 6dB gain steps input balance for stereo stereo width left to both right to both and input 1 input 2 changeover with trim linking Wild Aux Send Controls for R...

Страница 113: ...of which path is being controlled by the spill panel STEREO SURROUND SPILL OF REMOTE PATHS Just as with local paths on the host console remote paths can also use the surface controls for accessing and...

Страница 114: ...that can be controlled from the host console It is split into the various modes that can be selected The top section relates to the fader and cut controls This is followed by the displays in processin...

Страница 115: ...calrec com RP1 SPECIFICATIONS...

Страница 116: ...from a pool of 12 legs Direct Outputs from v1 1 onwards 1 assignable per mono stereo 5 1 Channel from a pool of 32 legs Mix Minus Outputs 1 assignable per Channel Group from a pool of 64 legs EQ from...

Страница 117: ...al switch on 5 A After 5 s interruption 10 A CONTROL UNIT RP1 240V Operation 115V Operation 100V Operation Supply Current 0 48 A 0 86 A 0 98 A Power Factor 0 68 0 79 0 80 Power Dissipation Heat 78 3 W...

Страница 118: ...Output and Efficiency The heat output from Fixed Format Hydra2 I O units depends on the supply voltage and loading Typically it is 0 55 times the RMS VA Volts x Amperes at 230V and 0 7 times the RMS...

Страница 119: ...I O range and the relevant audio specifications stated below also apply when used in RP1 Heat Output and Efficiency The Heat output from Modular Hydra2 I O units depends upon the quantity and card typ...

Страница 120: ...ES EBU AES3 24 bit Interface 110 Ohm balanced XLR or D Type Jitter 0 015UI 2 5ns peak Analogue Digital Conversion 24 Bit Input Electronically balanced Input Impedance 2k Ohms at mic level gain setting...

Страница 121: ...KHz Synchronisation NTSC PAL Video Tri Level Internal Crystal Reference TTL Wordclock 48kHz AES EBU AES3 Digital Input 48kHz LATENCY 48KHZ SAMPLE RATE From To Via Samples ms AES3 inputs SRC off AES3 O...

Страница 122: ...CED DIGITAL INPUTS Modular I O ONLY system set for SRC on I P SRC on I P to Digital Outputs with 0 dB gain N A off 138 dB on 130 dB to Analogue Outputs with 0 dB gain 18 dBu 0 dBFS off 111 dB on 111 d...

Страница 123: ...3 BALANCED DIGITAL OUTPUTS Modular I O ONLY system set for SRC on I P SRC on I P from Digital Inputs with 0 dB gain N A off 138 dB on 130 dB from Analogue Inputs with 0 dB gain 18 dBu 0 dBFS N A 110 d...

Страница 124: ...926 222 Iss 3 Calrec Audio Ltd Nutclough Mill Hebden Bridge West Yorkshire England UK HX7 8EZ Tel 44 0 1422 842159 Fax 44 0 1422 845244 Email Enquiries calrec com calrec com...

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