PROEL Axiom DSO480 User manual

USER’S MANUAL
www.proelgroup.com
english

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DSO480 QuickReference

Editingchannels:presschannel’sGAIN key.Firstpressaccessesthat
channel’sgain.Toscrollthroughchannel’sparameters,usetheBACKand
NEXTkeys.Secondpressaccesseslastviewedparameter.Thirdpresswill
dropbacktothedefaultscreen.

Accessingmenus:presstheMENUkey.UsetheBACKandNEXTkeysto
selectthesub‐menurequired,andenterthesub‐menuusingtheENTERkey.
Thisappliestoalllevelsofmenu.ENTERalwaysconfirmsselections.

TheMenusandtheirContents

GLOBAL MEMORY Sub‐menu:Recall/Store/Eraseinputandcrossover
settings,orcombinationsof.
INPUT SECTIONSub‐menu:Setupinputganging,andGEQ‘Q’setting.
CROSSOVERSub‐menu:Setuporadjustcrossoverdesign,including
routingandautolimitersetting.Alsosetupoutputganging.
INTERFACESub‐menu:Commsinterfacesetup(RS232)
SYSTEM Sub‐menu:Usedtoviewunit’sstatus,andselectvariousglobal
optionssuchasPEQ‘Q’orbandwidthunits,delayunits,andoutputmetering
point(pre/postmute).
SECURITY Sub‐menu:Usedforlockingvariousoperationsoftheunit,
usinga4digitcode.
AES/EBU Sub‐menu:Switchoutputsfromanaloguetodigitaland
monitorAESinputstatusinfo.(AESinputsareswitchedviarearpanel.)

Notes
Thecrossover(output)settingsmaybestoredindependentlyoftheinput
settings,usingtheGlobalMemorysub‐menu.

Theoutputmetersshowlevel,indBfromthelimiterthreshold,andtheinput
metersshowlevelfromclippingtheA‐Dconverters,
pre‐gainandallEQ.

Thehighandlowpasscrossoverfiltersaredefinedindependentlyoneach
outputchannel.

Toaccessthelimiterattackandreleaseparameters,select“AutoLimiter
TimeCst:No”whendesigningacrossover.

Toswapparametricfilterunitsbetweenbandwidth(‘BandW’)and‘Q’,enter
SystemSub‐menu,select‘FilterQ/Bandwidth’,andselectrequired
readoutunits.

Toswapdelaytimeunits,enterSystemSub‐menu,select‘DelayTime/
Distance’,andselectrequiredreadoutunits.

PressinganEDITkeyflashescorrespondingchannelsroutedto/fromthat
channel.

4
Contents
Important Safety Information 6
Thanks 7
Unpacking the unit 7
Introduction 8
Features 8
Front Panel Familiarisation 9
Rear Panel Connections 10
Operating the DSO480 11
Preliminary Set-up 11
Input Channel Makeup 12
Output Channel Makeup 12
Preset Routing Configurations 12
Free Assign Routing 15
Input Gain 16
Base Delay 16
Input Parametric EQ 16
Output Gain 17
Output Polarity 17
Output Delay 17
Output High Pass Filter 18
Output Low Pass Filter 18
Output Parametric EQ 18
Output Limiter 19
Output “D-Max” (Clip) Limiter 19
Input Ganging and Output Ganging 19
Menu System Overview 21
Menus in Detail 23
Memory Structure 24
Remote Control Interface Operation 25
RS232 Interface 25
RS232 Connection (Single Unit) 25
Loading New Software via a PC 26
AES Inputs 26
AES Input 26
Security and Locking 27
Entering the Password to Complete the Locking Operation 27
Unlocking the Unit 28
Forgotten the Password? 28
Program Limiter and “D-Max” Limiter 29
Program Limiter 29
“D-Max” Clip Limiter 29
Setting Accurate Limiter Thresholds 32
Crossover Filter Slopes 33

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Time Alignment 33
Parametric Filter Types and Their Uses 34
Standard Parametric EQ 34
Shelving EQ (High Shelf shown) 35
Creating a Flat-topped EQ Response 35
Bandpass Filter 36
Notch Filter 36
All Pass Filter 37
Phase Filter 37
Low/High Pass Variable ‘Q’ Filter (Low Pass shown) 38
Elliptical filters 38
Factory presets 39
Warranty 39
Specifications 40

6
Anexampleofthisequipmenthasbeentestedandfoundtocomplywiththefollowing
EuropeanandinternationalStandardsforElectromagneticCompatibilityandElectricalSafety:


RadiatedEmissions(EU):EN55013‐1(1996)
RFImmunity(EU):EN55103‐2(1996)RFImmunity,ESD,BurstTransient,Surge,Dips&Dwells
ElectricalSafety(EU): EN60065(1993)
ImportantSafetyInformation
DonotremoveCovers.
Nouserserviceablepartsinside,referservicingtoqualifiedservicepersonnel.
Thisequipmentmustbeearthed.
CAUTION
RISKOFELECTRICSHOCK
DONOTOPEN
DONOTEXPOSETORAIN,MOISTURE,
DRIPPINGORSPLASHING
ATTENTION
RISQUEDECHOCELECTRIQUE
NEPASENLEVER
NEPASEXPOSERALAPLUIENIAL’HUMITE

Objectscontainingliquids,suchasvases,mustnotbeplacedonthisequipment.

Itshouldnotbenecessarytoremoveanyprotectiveearthorsignalcableshieldconnections.

Donotdefeatthepurposeofthepolarizedorgrounding‐typeplug.Apolarizedplughastwobladeswith
onewiderthantheother.Agroundingtypeplughastwobladesandathirdgroundingprong.Thewider
bladeandthethirdprongareprovidedforyoursafety.Whentheprovidedplugdoesnotfitintoyour
outlet,consultanelectricianforreplacementoftheobsoleteoutlet.

Onlyusethisequipmentwithanappropriatemainscord.

IntheUSAthecordshouldcomplywiththerequirementscontainedintheStandardforCordSetsand
PowerSupplyCords,UL817,bemarkedVW‐1,andhaveanampcapacityratingnotlessthanthemarked
ratingoftheapparatus.



7
Thanks
ThankyouforchoosingaPROELDSO480 foryourapplication.Pleasespendalittletimereadingthrough
thismanual,sothatyouobtainthebestpossibleperformancefromtheunit.
AllPROELproductsarecarefullydesignedandengineeredforcutting‐edgeperformanceandworld‐class
reliability.IfyouwouldlikefurtherinformationaboutthisoranyotherPROELproduct,pleasecontactus.
Welookforwardtohearingfromyouinthenearfuture.
Unpackingtheunit
Afterunpackingtheunit,pleasecheckitcarefullyforanydamage.Ifanyisfound,immediatelynotifythe
carrierconcerned‐you,theconsignee,mustinstigateanyclaim.Pleaseretainallpackagingincaseof
futurere‐shipment.



Pleasethinkofourenvironmentanddon’tbinanymaterials,includingthismanual.
Whentheproducthasreachedtheendofitsusefullife,pleasedisposeofitresponsibly
througharecyclingcentre.

FEDERALCOMMUNICATIONSCOMMISSION
ThisisaclassAdigitaldevice,whichismarkedforuseinacommercial,industrialorbusiness
environment,exclusiveofusedbythegeneralpublicorusedinthehome.

ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwo
conditions:(1)thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptany
interferencereceived,includinginterferencethatmaycauseundesiredoperation.

CAUTION:Changesormodificationstothisproductnotexpresslyapprovedbythemanufacturercould
voidtheuser'sauthoritytooperatethisproduct.

NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigitaldevice,
pursuanttoPart15ofFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainst
harmfulinterferencewhentheequipmentisoperatedinacommercialenvironment.Thisequipment
generates,usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordance
withtheinstructionmanual,maycauseharmfulinterferencetoradiocommunications.Operationsof
thisequipmentinaresidentialareaislikelytocauseharmfulinterferenceinwhichcasetheuserwill
berequiredtocorrecttheinterferenceathisownexpense.

8
Introduction
TheDSO480ispowerfulDSPbasedaudioprocessors,ideallysuitedforinstallapplications,wherethey
combinethefunctionsofamultitudeofconventionalproductsinacompact1Uunitwithextensiveremote
controlcapabilities.Toachievethis,theunitshaveuptofourinputsandeightoutputswhichcanbe
configuredinaselectionofbasiccrossovermodes–4x2way;2x3way+2Aux;2x4way;and1x8way
(asapplicabletoi/oconfigurations).Theyalsooffera“freeassign”mode,whichallowscompletelyflexible
routingofanyoutputfromanycombinationofinputs.

Eachinputhasagaincontrol,variabledelay,aeightbandsoffullyparametricequalisation.Theparametric
filterbandshavealargeselectionofdifferentfiltertypesavailable,includingshelving,notch,band‐pass,
phaseandellipticalbehaviours.

Eachoutputhasagaincontrol,variabledelay,highandlowpasscrossoverfilters,ninebandsoffully
parametricequalisation,polarityswitchingand,additionally,afullyfeaturedlimiter,andafinalcliplimiter.
Thecrossoverfiltersofferslopesofupto48dB/Octave.,withavarietyofresponsesavailable.

RemotecontroliscateredforintheformofRS232,andmultipleusermemoriesareprovidedforthe
storageandrecallofsettings.

Securitylock‐outisavailableforallcontrols.

TheDSO480isalsoequippedwithAES/EBUdigitalinputs,andincludeasamplerateconverter,capableof
acceptinganythingfrom32kHzupto192kHz.


Features

Superbaudioquality–carefullyoptimiseddoubleprecisionsignalprocessingcoupledwith24bit
conversionensureadynamicrangeinexcessof116dB.Thehighsamplingrateof96kHzmeansminimal
filteringprovidingexceptionalsonicpuritywithabandwidthinexcessof32kHz.

Aflexibleinput/outputmulti‐modeformatcatersforanyconfiguration,regardlessofscale.

Bothroutingofinputstooutputs,andganging(forediting)arecompletelyflexible.

AcompletelynewSHARCTMbasedDSPplatformsuppliesphenomenalcomputationalpower,allowingthe
unittoprovidemultiplebandsofstandardparametricequalisationoneveryinputandoutput.This
additionalpoweralsopermitsbothprogramlimitersandnoovershootcliplimitersoneachoutput.
Delayofupto650mSmaybeindependentlysetforeachoutput,withanexceptionallyfineminimum
incrementof300nS,whichcorrespondstoadistancechangeof0.1mm!
Thecomprehensivestandardspecificationalsoincludesupto255memories,andremotecontrolviaRS232
withsecuritylockout.algorithmensuresthatnomatterhowmuchequalisationisappliedtoachannel,
therewillalwaysbesufficientheadroomavailabletocaterforit.

9
FrontPanelFamiliarisation
LCDScreen:Shows,bydefault,thenameof
thelastrecalledmemoryonthebottomline
ofthescreen,andthecurrentroutingonthe
topline.Alsousedtoshowallparametersas
theyareedited,andallmenuselections.


ControlKeys:Selectionandadjustmentofparameters.
NEXTkeymovesforwardthroughlistofparameters.
BACKkeymovesbackwardsthroughlistofparameters.
MENUkeyactivatesthemainmenu–asecondpressselectsthelastmenuedited–athird
pressselectsthelastmenuitem.Inthisway,threepressesonMENUfromthedefault
screenwilljumpbacktothelastparameteradjusted.Selectionofdifferentmenusis
accomplishedusingtheBACKandNEXTkeys,orwiththeFREQencoder.
ENTERkeyentersthechosenmenu,confirmsselections,andchangesfiltertypes
wheneditingparametricsections.
BYPASSwillflattenthecurrentlyselectedparametricsections.Notethat,forsafetyreasons,itisnot
possibletobypassthehighandlowpassfiltersections.
QUITexitsmenusbacktothedefaultscreen.

RotaryEncoders:Threevelocitysensitiveencodersadjusttherelevant
parametersasdisplayedonthescreen.
StatusLEDs:ThetwostatusLEDsshowAESinputsselected(flashingifnot
locked);ERRifsomeerroroccurinthedigitalinputssection



InputSections:Controlandmonitorinputsignalpaths.
RedMUTEbuttonsilluminatewhenpressedandmuteaudioforthatchannel.
EDITbuttonsilluminateyellowwhenpressed,andaccessgainonfirstpress,
thenlastviewedparameteronsecondpress,thenexitonthirdpress.
InputmetersshowdBfromclippingpointoftheanaloguetodigital
converters.Yellow(0dB)LEDilluminates3dBfromclipping.RedCLIPLED
mayilluminateindependentlyfromtherestofthemetertoshowdigitaloverflow.AllfourCLIPLEDs
illuminatingindicatesinternalclippingaftertheADC.

OutputSections:Controlandmonitor
outputsignalpaths.
RedMUTEbuttonsilluminatewhen
pressedandmuteaudioforthat
channel.
EDITbuttonsilluminateyellowwhen
pressed,andaccessgainonfirstpress,
thenlastviewedparameteronsecondpress,thenexitonthirdpress.OutputmetersshowdBfrom
limiting.TheyellowLEDilluminatesattheonsetoflimiting.TheredLEDilluminatesat4dBintolimiting
(i.e.4dBofgainreduction).


10
RearPanelConnections

PowerSwitch:turnstheunit’smainssupplyoffandon.
MainsFuse:locatedinafinger‐proofholderadjacenttothemainsinlet.A
sparefuseisalsolocatedinthisholder.
MainsInlet:connectedviaastandardIECsocket.




Alwaysreplacethefusewiththecorrecttypeandratingasshownontherearpanellegend.





RS232:RS232standardviaa9pinD‐typeconnector,forconnectiontoaPC.
















AudioOutputs:3pinXLRsocketsareprovidedforeachchannel.Allarefullybalanced,pin2hot,3cold,1
screen.








AESInputSwitch:RecessedswitchtoselectAESdigitalinputs.RedLEDwillilluminateintheholewhen
AESinputsareselected,alongwiththecorrespondingfrontpanelindicator.
AudioInputs:3pinXLRsocketsareprovidedforeachchannel.Allarefullybalanced,pin2hot,3cold,1
screen.

NotethelegendingonthepaneltodesignatewhichinputsareusedforAESwhenthedigitalinputsare
enabled.Pleaseseepage26formoreinformation.

11
OperatingtheDSO480
PreliminarySet‐up

TheprocedurebelowshouldbefollowedwhenfirstinstallingaDSO480unit.
 Designyourcrossover!Todothis,pressMENU,andusetheBACKorNEXTkeytoselect
‘Crossover sub-menu’andthenpressENTER.UsetheBACKorNEXTkeytoselect
‘Design a crossover’andthenpressENTER.Finally,usetheBACKorNEXTkeytoselect
thedesiredrouting1andfollowtheset‐upwizardtofinaliseyourdesign.

 Notethatwheninamenu,ENTERisalwaysusedtoconfirmselections.Thecurrentselectionis
markedwithanasterisk‘*’.

 UsetheEDITkeysoneachoutputchannelwiththeBACKandNEXTkeystoselectthehighpass
filters,lowpassfilters,parametricsetc.Notethatwhendesigninganewcrossover,thehighand
lowpassfilterswillbesettodefaultvalues.

 UsetheEDITkeysoneachinputchannelwiththeBACKandNEXTkeystoselectthegain,delay
andparametricsavailableoneachinput.
Info: Note that if no action is taken in menu mode, the unit will return to normal ‘default’ mode
after about twenty (20) seconds. Repeat the above directions to return to menu mode.
1For details about adjusting the routing if one of the standard configurations does not suit, see page 15.

12
Routing Options and Processing Blocks
DuetothecompletelynewDSPplatform,theroutingpossibilitieswithintheDSO480 havebeenmade
completelyflexible,withamatrixavailableallowinganycombinationofinputstoberoutedtoanyoutput.
TheadditionalDSPpowerhaspermittedtheinclusionofmoreprocessingblocks,evenconsideringthe
extrainputsandoutputs,andthedoublingofsamplerate.

Toreduceset‐uptimeandaidusability,severalstandardconfigurationsareavailableasdescribedinalater
section.

Thissectionwilloutlinetheprocessingblocksavailableinrelationtothesignalpath,andexplainthe
variousoptionsforrouting,includingthe“FreeAssign”mode,whichopensupcompletelyflexiblechannel
routing.

Input Channel Makeup

Thediagrambelowshowstheprocessingavailableoneachofthefourinputchannels,beforeroutingtothe
matrix.



 



Output Channel Makeup

Thediagrambelowshowstheprocessingavailableoneachoftheeightoutputchannels,afterroutingfrom
thematrix.
PresetRoutingConfigurations
Inadditiontotheabilitytoassignanycombinationofinputstoanyoutput,anumberofpreset
configurationsareprovided,forusewhendesigningacrossoverfromscratch.Thesehavetheadvantageof
suggestedsettingsforthehighandlowpassfilterstousefulbasicstartingpoints,tofilterthedifferent
outputsasappropriateforthechosenconfiguration.Thesemay,ofcourse,befreelymodifiedafterwards
shouldtheynotsuittherequirementsexactly.

Thediagramsonthefollowingpagesshowtheconnectionsmadebetweeninputsandoutputs,andthe
suggestedvalueschosenforthehighandlowpassfilters.

13
4x2waycrossover:Asshown,eachinputfeedsapairofoutputs,oddnumbersbeingthelowfrequency
split,andevennumbersbeingthehighpartofthespectrum.Defaultsuggestedcrossoverfrequenciesare
shownbyeachoutput.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

2x3waycrossover:InputsAandBfeedthreeoutputseach,withoutput7beingfedfrominputC,and
output8frominputD.Notethe‘Aux’outputsaresettofullrange.Defaultsuggestedcrossover
frequenciesareshownbyeachoutput.


14
2x4waycrossover:InputsAandBfeedfouroutputseach,withinputsC&Dbeingunused.Default
suggestedcrossoverfrequenciesareshownbyeachoutput.

 


 
 
 

1x8waycrossover:InputsAisfedtoalleightoutputs,withinitialsettingsbeingallfullbandwidth.The
crossoverpointscanbeadjustedasdesired.

 
 

15
FreeAssignRouting

Ifnoneofthepresetconfigurationsareappropriatetotherequiredsystemsetup,itispossibletomanually
selecttheroutingofthecrossover.ThisisachievedthroughtheCrossover Menu -> Design A
Crossover.

PressingENTERwillstartthecrossoverdesignwizard,withthefirstoptionbeingtochoosetherouting.

Thedisplaywillshow

Design A Crossover ->
Routing = 2 X 4 WAY *
orwhateverthecurrentconfigurationissetto.

PressBACKuntilthedisplayshows

Design A Crossover ->
Routing = Free Assign
AndthenpressENTER. TheEDITkeywillilluminateforoutput1,aswillanyrelevantinputEDITkeys,
showingwhichinputsarefeedingoutput1.Thedisplaywillalsodetailthecurrentcombinationofinputs
feedingthisoutput.Tochangetheroutingforanyoutput,pressitsEDITkey,andthenchoosetherequired
inputchannelcombinationbyjustpressingtheinputEDITkeysasappropriate.Theinputcombinationscan
alsobesteppedthroughinturnbypressingNEXT,orBACK.

Tocompletetheprocedure,pressENTER.Thewizardwillcontinue,andiftheroutinghasbeenchanged,all
outputswillbemutedonexit.


16
Editing Audio Parameters – Input Channels
InputGain
Therangeofthecontrolovertheinputgainis–40dBto+6dBin0.1dBsteps.

InA Input A Gain
Input Gain = +6.0dB
Gain
BaseDelay
Themaximumavailabledelaybetweenanyinputandoutputis650.00ms.Forexample,iftheinputdelay
onchannelAissetto500ms,themaximumavailableoutputdelayforanyoutputfedfrominputAwillbe
150ms.Thereadoutunitscanbechangedbetweentimeinmilliseconds,distanceinfeetordistancein
metres.Pleaseseepage23formoredetails.
InA Input A Delay
Base Delay = 0.00mS
x1mS x10uS
343mm 4mm
InputParametricEQ
Thereareeightbandsofparameterequalisationavailableoneveryinput.Thebehaviourofeachindividual
bandcanbechangedtoavarietyofdifferentfiltershapes,includinghighandlowshelves,notch,and
bandpass.ChangingthefiltertypeisachievedbypressingENTERduringeditinganyparticularband.For
moredetailsaboutthevarioustypesoffilteravailable,pleaseseepage33.
InA Input A PEQ:1<>
1k00Hz Q=3.0 0.0dB
Frequency ‘Q’ Gain

17
Editing Audio Parameters – Output Channels
OutputGain
The range of the control over the input gain is –40 dB to +15 dB in 0.1 dB steps.
OP1 Output 1 Gain
Output Gain = +6.0dB
Gain
OutputPolarity
Thepolarity(orphase)ofeachoutputmaybeswitchedindividuallyasbelow.
OP1 Output 1 Polar.
Polarity = [+]
-or+
OutputDelay
Themaximumavailabledelaybetweenanyinputandoutputis650.00ms.Forexample,iftheinputdelay
onchannelAissetto500ms,themaximumavailableoutputdelayforanyoutputfedfrominputAwillbe
150ms.Thereadoutunitscanbechangedbetweentimeinmilliseconds,distanceinfeetordistancein
metres.Pleaseseepage23formoredetails.
OP1 Output 1 Delay
Delay = 0.0000mS
x1mS x10uS x0.3uS
343mm 4mm 0.1mm

18
OutputHighPassFilter
Thehighpasscrossoverfilteroneachoutputhasafrequencyrangeof<10Hzupto32kHzin1/36thOctave
steps.Ifyoutrytosetthehighpassfiltertoahigherfrequencythanthelowpass(whichwouldbe
pointlessandresultinnooutput),themessageHigh/Low Freq. Overlap!willbedisplayed.Note
thattoaccessthe48dB/Octavefilters,parametricbands6&7needtobebypassed,orsetto0dB.Ifthey
arenot,themessageBypass PEQ’s 6 & 7 To Access 48dB Slopeswillbedisplayed.

OP1 Output 1 HPF /~~
<10Hz Linkw-Riley 48dB
Frequency Slope
OutputLowPassFilter
Thelowpasscrossoverfilteroneachoutputhasafrequencyrangeof35.1Hzupto>32kHzin1/36th
Octavesteps.Ifyoutrytosetthelowpassfiltertoalowerfrequencythanthehighpass(whichwouldbe
pointlessandresultinnooutput),themessageHigh/Low Freq. Overlap!willbedisplayed.Note
thattoaccessthe48dB/Octavefilters,parametricbands8&9needtobebypassed,orsetto0dB.Ifthey
arenot,themessageBypass PEQ’s 8 & 9 To Access 48dB Slopeswillbedisplayed.

OP1 Output 1 LPF ~~\
>32kHz Linkw-Riley 48dB
Frequency Slope
OutputParametricEQ
Thereareninebandsofparametricequalisationavailableoneveryoutput2.Thebehaviourofeach
individualbandcanbechangedtoavarietyofdifferentfiltershapes,includinghighandlowshelves,notch,
andbandpass.ChangingthefiltertypeisachievedbypressingBYPASStobypassthefilterandthen
pressingENTERduringeditinganyparticularband.Formoredetailsaboutthevarioustypesoffilter
available,pleaseseepage33.

OP1 Output 1 PEQ:1<>
1k00Hz Q=3.0 0.0dB
Frequency ‘Q’ Gain
2Note that 2 bands each will be lost when using 48 dB slope crossover filters, resulting in a maximum of 5
bands of EQ when both high and low pass are set to 48 dB/Octave.

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OutputLimiter
Thelimiteroneachoutputhasadjustableattackandthreshold,withareleasetimethatisselectabletobe
amultiplieroftheattacktime.Forexample,asshownbelow,theattacktimeis2msandreleaseis“x16”
so32ms.Theattackandreleasetimescanbeautomaticallylinkedtothehighpassfilterfrequency,sothat
theyaresettocorrectvaluesfortheoutput’sfrequencyrange.Ifthisfeatureisenabled,thedisplaywill
showAutomatic T/Cinplaceoftheattackandreleasetimes.Selectionofautomatictimeconstants
isthroughthe Design a Crossoverwizard,intheCrossover Sub-Menu.

OP1 Output 1 Limiter
Atk=2.0mS Rel=x16 +22dB
Attack Release Threshold
Output“D‐Max”(Clip)Limiter
Thecliplimiteroneachoutputisdesignedtositatathresholdjustabovethestandardlimiterandhasa
lookaheadattacksothatitsthresholdcanneverbeexceeded.Thereleasetimecanbeautomatically
linkedtothehighpassfilterfrequency,sothatitissettoavalueappropriatefortheoutput’sfrequency
range.Ifthisfeatureisenabled,thedisplaywillshowRel. = Autoinplaceofthereleasetime.
Selectionofautomatictimeconstantsisthroughthe
Design a Crossoverwizard,intheCrossover Sub-Menu.
Moreinformationaboutthelimitersandtheiruseisgiveninthesectiononpage29.

OP1 Output 1 ClipLim
Rel.=Medium 2dB Above
Release Threshold
InputGangingandOutputGanging

Themethodoflinkinginputsoroutputstogetherduringeditingisachievedinthesameway,soonly
crossover(output)gangingwillbeexplainedhere.HavingselectedCrossover Ganging fromthe
menuundertheCrossover Sub-Menu,thecurrentgangingset‐upwillbedisplayed.Thiswill
eitherbeapresetselectionaswouldbeusefulinastandardcrossoverconfiguration–forexample

<-Crossover Ganging
Ganging=1+3+5+7 2+4+6+8
…wouldbealogicalgangingarrangementifthecrossoverwassetupasa4x2way–linkingthecontrol
andadjustmentofall“Low”outputstogether,andthatofall“High”outputstogether.

However,ifthecrossoverhasnotbeensetupwithapresetroutingconfiguration,thenitmayberequired
tosetupthegangingtocomplimentthisconfiguration.ThisisachievedusingtheFree Assignmode.
Thisisselectedfromthepresetgangingchoices,whichare:
Ganging=None [all outputs independent]

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Ganging=Free Assign [choose ganging]
Ganging=1+2+3+4+5+6+7+8 [1 x 8 way]
Ganging=1+5 2+6 3+7 4+8 [4 x 2 way]
Ganging=1+3+5+7 2+4+6+8 [2 x 4 way]
Selecting Free Assign and then pressing ENTERwill begin the process of ganging
outputs together using the following simple rules:
 All outputs are ganged to the lowest number – so to gang 3 & 5, 5 must be
selected and then ganged to 3.
 Outputs cannot share more than one ganging set – so for example output 3 cannot
be ganged to 2 and 4 unless they are ganged together as well. (Effectively 3 and 4
are ganged to 2 in this case)


Withtheserulesinmind,selectingandsettingupgangsisquitestraightforward.
PressaMUTEkeytochoosetheoutputtogang–itsLEDwillbegintoflash,andanEDITkeywillilluminateto
showwhichoutputitiscurrentlygangedwith.Tochangethisselection,justpressanotherEDITkey,
rememberingthatgangsworkfromthehighesttolowestnumber.So,togangoutputs1and5,pressMUTE
5thenEDIT1–thedisplaywillshow
<-Crossover Ganging
Gang Output 5 with 1

GangingisclearedbyselectingGanging=None fromtheinitialchoicesgivenabove.The Input
Ganging procedureisidenticaltothecrossoverganging,selectableunderthe Input Sub-Menu.