Peavey Electronics Corporation CEQ 280a User manual

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Cover for CEQ 280a

CEQ™280a2
Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure
that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the product.
CAUTION: Risk of electrical shock – DO NOT OPEN!
CAUTION: To reduce the risk of electric shock, do not remove cover. No user serviceable parts inside. Refer servicing to
qualified service personnel.
WARNING: To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. Before using this
appliance, read the operating guide for further warnings.
Este símbolo tiene el propósito de alertar al usuario de la presencia de "(voltaje) peligroso" que no tiene
aislamiento dentro de la caja del producto que puede tener una magnitud suficiente como para constituir riesgo de
corrientazo.
Este símbolo tiene el propósito de alertar al usario de la presencia de instruccones importantes sobre la operación
y mantenimiento en la literatura que viene con el producto.
PRECAUCION: Riesgo de corrientazo – No abra.
PRECAUCION: Para disminuír el riesgo de corrientazo, no abra la cubierta. No hay piezas adentro que el usario pueda
reparar. Deje todo mantenimiento a los técnicos calificados.
ADVERTENCIA: Para evitar corrientazos o peligro de incendio, no deje expuesto a la lluvia o humedad este aparato
Antes de usar este aparato, lea más advertencias en la guía de operación.
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dangereuse pouvant être d'intensité suffisante pour constituer un risque de choc électrique.
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aucune pièce pouvant être réparée par l'utilisateur. Confier l'entretien à un personnel qualifié.
AVERTISSEMENT: Afin de prévenir les risques de décharge électrique ou de feu, n'exposez pas cet appareil à la pluie
ou à l'humidité. Avant d'utiliser cet appareil, lisez les avertissements supplémentaires situés dans le guide.
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von Ausreichender Stärke sind, um einen elektrischen Schlag verursachen zu können.
Dieses Symbol soll den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam machen, die
Handhabung und Wartung des Produkts betreffen.
VORSICHT: Risiko – Elektrischer Schlag! Nicht öffnen!
VORSICHT: Um das Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es befinden sich
keine Teile darin, die vom Anwender repariert werden könnten. Reparaturen nur von qualifiziertem Fachpersonal
durchführen lassen.
ACHTUNG: Um einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte dieses Gerät nicht dem Regen oder
Feuchtigkeit ausgesetzt werden. Vor Inbetriebnahme unbedingt die Bedienungsanleitung lesen.

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Contents
1.0 INTRODUCTION ...................................................................................................................... 5
2.0 FEATURES ................................................................................................................................. 5
3.0 FRONTPANEL .......................................................................................................................... 6
4.0 BACKPANEL ............................................................................................................................ 7
5.0 BASICCONNECTIONS ............................................................................................................ 8
5.1 ConnectingtheCEQ™280atoYourExistingSoundSystem ........................................... 8
5.2 ConnectingforPinkNoise .................................................................................................. 8
5.3 ConnectingtoaMixerEffectsLoop ................................................................................... 9
6.0 BASICOPERATION.................................................................................................................. 9
6.1 SelectingandEditingParameters...................................................................................... 10
6.2 MemoryRe-initialization .................................................................................................... 10
6.3 AdjustingtheViewAngle .................................................................................................. 11
6.4 SubsonicFilter..................................................................................................................... 11
6.5 EQRange............................................................................................................................. 12
6.6 ManualEqualization ........................................................................................................... 12
6.7 LevelAdjustment ................................................................................................................ 13
6.8 Bypass the EQ..................................................................................................................... 13
6.9 Set EQ Flat........................................................................................................................... 13
6.10 StoringEQCurves .............................................................................................................. 13
6.11 RecallingEQCurves........................................................................................................... 14
6.12 RecalltheLastEQ............................................................................................................... 14
6.13 CompareEQCurves........................................................................................................... 15
6.14 AutomaticEqualization ...................................................................................................... 15
6.14a BriefOverview ................................................................................................................ 15
6.14b ToAutoEqualizeYourSoundSystem ......................................................................... 15
6.15 EQDisplaywithRTA .........................................................................................................19
6.16 The Feedback Finder .........................................................................................................20
7.0 ADVANCEDOPERATIONS ................................................................................................... 21
7.1 MicrophoneSelection/Creation ........................................................................................ 21
7.2 CreatingaMicrophoneCurve ........................................................................................... 21
7.3 RoomTargetCurveSelection/Creation............................................................................ 22
7.4 CombiningTwoEQCurvesbyAddition ......................................................................... 23
7.4a Overview.......................................................................................................................... 23
7.4b AddingTwoCurves ........................................................................................................ 24
7.4c Storing .............................................................................................................................. 25
7.4d Recalling........................................................................................................................... 25
7.5 GlobalMIDIfunctions ....................................................................................................... 26
7.5a MIDIOverview................................................................................................................ 26
7.5b FactoryDefaultSettings ................................................................................................. 26
7.5c SettingtheMIDIChannel............................................................................................... 27
7.5d RemoteRecallofStoredEQCurves ............................................................................. 27
7.5e StereoSlave ..................................................................................................................... 27
7.5f Dump EQ CurvestoAnotherCEQ280a...................................................................... 28
7.5g DumpEQ Curvestoa MIDIStorageDevice ............................................................... 29
7.5h LoadingEQCurves ......................................................................................................... 30

CEQ™280a4
7.5i MIDISend/ReceiveFilter ............................................................................................... 31
7.5j MIDIThru ........................................................................................................................ 31
7.5k ChangingMIDIControllerAssignments ....................................................................... 32
7.5l SettingtheMIDISwitches .............................................................................................. 32
7.6 TheSecurityLock ............................................................................................................... 33
7.7 UserAccess ......................................................................................................................... 34
8.0 USINGTHECEQ280aWITHTHECEQ™280Ra................................................................ 34
9.0 MIDIIMPLEMENTATION ...................................................................................................... 35
10.0 SYSTEMEXCLUSIVE .............................................................................................................. 36
11.0 RECOMMENDEDCONNECTIONS ....................................................................................... 39
12.0 FLOWCHART .......................................................................................................................... 40
13.0 SPECIFICATIONS.................................................................................................................... 41

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1.0 INTRODUCTION
ThankyouforpurchasingthePeaveyCEQ™280a.ThenewCEQ280a,1⁄3octavegraphicequalizer,movesintothe
nextgenerationofsoundreinforcementproductswithfeaturesthatexpanduponthecapabilitiesofthecritically
acclaimed,MIDIprogrammablePeaveyCEQ™280Ra.
TheCEQ280astillmakesiteasyforanyonetoequalizeasoundsystemwith1⁄3octaveprecision.Thebuilt-inReal-
TimeAnalyzerandpinknoisesourcelettheCEQ280aquicklyandautomaticallyequalizeasoundsystemtoastored
“target”frequencyresponsecurve.Thefeedbackfindercanthenbeusedtofindandremovetheremainingfeedback
problems.
Whenusedasahouseequalizerforaband,theCEQ280aofferssignificantadvantages.Onceabandhasestablished
its“sound”(housefrequencyresponsecurve),theCEQ280acanautomaticallyadjustitselftoobtainthatsoundin
each new venue, and the CEQ 280a has enough storage locations for the busiest band.
Whenusedin a studio setting,theCEQ280aallowsmany curves tobestoredandcomparedto find the perfect
EQ.And,becausetheCEQ280achangesquietlyfromonecurvetothenext,EQcurvescanbechangedinthemiddle
of a song.
Whenchangingaguitareffectorkeyboardvoice,aMIDIprogramchangecommandsenttotheCEQ280awillrecall
acorrespondingEQcurve,anobviousadvantageinliveinstrumentapplications.Forsequencedsongs,program
changes can be written into the sequence to change the EQ settings.
Whenusedinpermanentinstallations,theCEQ280anotonlymakessetupabreeze,butitssecuritylockwillprotect
thesettingfrom“accidentalchanges.”
2.0 FEATURES
☛28-BandGraphicEqualizer
☛ConstantEQFilterson1⁄3OctaveISOCenters
☛Real-TimeAnalyzer
☛AutomaticRoomEqualization
☛Built-inPinkNoiseSource
☛Easy-to-Read40x2CharacterDisplay
☛NonvolatileStorageof128EQCurves
☛NondestructiveEQCurveAddition
☛EQ Curve Compare: ±12 dB in 1 dB steps; ±6 dB in 0.5 dB steps
☛CombinationXLR-1⁄4″PhoneInputConnectors
☛Electronically-BalancedInputsandOutputs
☛SoftwareSecurityLock
☛FeedbackFinder
☛MIDIControllable
☛MIDICompatiblewiththeOriginalPeaveyCEQ™28/CEQ™28R
☛RelayFront-PanelandPower-OffBypass
☛Switchable40HzSubsonicFilter
☛SingleI.U.StandardRackSpace

CEQ™280a6
3.0 FRONT PANEL
1. EQ
AccessmanualEqualizationfunctionsincluding:EQadjustment,EQcurvecompare,setEQflat,addacurve,
andEQcurvewithRTAdisplayoftheEQoutputsignal.
2 . RTA
Accesstomicinput,Real-TimeAnalyzer,andautoequalizationfunctionsincluding:RTAdisplay,micinputlevel
adjustment,microphonecompensationcurveselection,microphonecurvecreation,roomresponse“target”
curveselection,roomresponse“target”curvecreation,anddiscreteandcontinuousautoequalization.Toget
to all of these functions, you need to press the RTA button twice.
3. Bypass
Togglesbetweenequalizeractiveorhardwarebypassofinputtooutput.
4. Global
Thisprovidesaccessto:EQrange,subsonicfilter,viewangle,CEQ280Racontrol,securitylockaccessstatus,
andMIDIfunctions.
5. Store
StorageandnamingofEQcurves.
6. Recall
Accesstorecallofstoredcurves.
7. Cursor Buttons (Up, Down, Left and Right)
Theleftandrightarrowbuttonsmovethecursorwithinthecurrentdisplaytoselectaparameterforviewing
orchange. Theup and down arrow buttons changethe selected parameteras indicatedby the blinking“ *”
or“_”cursor.
8. Soft Buttons
Thefunction ofthese buttons isdefined inthe left sideof thedisplay.
9. Display Window
40-characterby2-lineLiquidCrystalDisplay(LCD)withvariableviewangleadjustmentforeasyvisibility.

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4.0 BACK PANEL
1. IEC Line Cord Socket
ConnecttheremovableAClinecordheretoapplypowertotheCEQ280a.Damagetotheunitmayresultif
improperlinevoltageisused(seelinevoltagemarkingonunit).
2. MIDIOut
Thisisastandard,5-pinDINjackusedforsendingMIDIdatafromtheCEQ280atoreceivingunit(s).Thisjack
canalsoechoincomingMIDIdatareceivedattheMIDIInjack.Thismeansthereceivingunit(s)willreceive
anexactcopyofthedatatheCEQ280areceived.ThisisanoptionthatmaybeturnedoffandonintheMIDI
section of the Global menus.
3. MIDIIn
Thisisastandard,5-pinDINjackusedforreceivingMIDIdatafromthesendingunit.
4. Noise Source Output
Pinknoiseoutputforroomanalysis.Unbalancedwithatip-sleeve(Mono)plugorbalancedwithatip-ring-
sleeve(Stereo)plug.
5. EQ Output 1⁄4″Phone
Unbalancedwithatip-sleeve(Mono)plugorbalancedwithatip-ring-sleeve(Stereo)plug.TheXLRand1⁄4″
jacksarewiredinParallel.
6. EQOutputXLR
Balancedequalizeroutput.TheXLRand1⁄4″jacksarewiredinparallel.
7. EQ Input
ThisisthemainequalizerinputfortheCEQ280aandcanbeconnectedbalancedorunbalancedusingeither
XLRtypeconnectorsor1⁄4″phoneplugs.
8. RTA Microphone or Line-Level Input
TheXLRtypemicinputprovides12voltstophantompowertherecommendedAVR™-1microphone.The1⁄4″
phonelineinputcanbeusedbalancedwitha tip-ring-sleeve (Stereo) plug or unbalancedwithatip-sleeve
(Mono)plug.

CEQ™280a8
5.0 BASIC CONNECTIONS
ThissectionshowssomepossibleconfigurationsfortheCEQ280a.
5.1 Connecting the CEQ 280a to Your Existing Sound System
ThisdiagramshowshowtoconnecttheCEQ280aandyoursoundsystemtogether.
5.2 Connecting for Pink Noise
ThefollowingdiagramshowshowtoconnecttheCEQ280aintoyoursoundsystemtousethepinknoisesource
forequalization.

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5.3 Connecting to a Mixer Effects Loop
This diagram shows how to connect the CEQ 280a to the effects loop of a recording console.
6.0 BASIC OPERATION
WhentheCEQ280aisfirstturnedon,thefollowingdisplayisbrieflyshown:
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CEQ 280a Battery OK
Afterabrief pause the screenwillchangetotheEQ display.
OPT ⁄ ⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄⁄ 0dB
DSPL‡ ‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡ 16K
-
Note: TheEQdisplayisthemaindisplayfortheCEQ280a.PressingtheEQbuttonorrepeatedlypressingthe“EXIT”
softbuttonwillalwaysreturnyoutothisdisplay.

CEQ™280a10
Thissectioncoversthefollowingareas:
• Parameterselectionandadjustment(arrowbuttonsandsoftbuttons)
• View-angleadjustment
• Manualequalization
• StoringEQcurves
• RecallingEQcurves
• Automaticequalization
• Feedbackfinder
Note: ThissectionshouldprovidealltheinformationnecessarytousetheCEQ280ainmostsetups.However,
greater depth into this units’ functions can be found in the Advanced Operations section.
6.1 Selecting and Editing Parameters
ThismanualtakestheapproachthatthebestwaytolearnhowtooperatetheCEQ280aisthroughexample.The
following section will show you how to adjust the view angle, and in the process you will learn how to select
parametersandhowtochangetheirsettings.
Thisbasicprocessisthesameformostparameters you need to select and/orchange.
1. The left and right arrow buttons will always move you between parameters while....
2. ...the up and down arrow buttons will always change the value of the selected parameter.
3. Throughoutthismanualyouwillseereferencesto“softbuttons.”Thesearethetwobuttonslocatedimmediately
totheleft of the display.Thefunctionofthesetwo buttons willbedefinedwithinthedisplay.
Note: Thecurrentlyselectedparameterisindicatedbyeithera“*”or“_”symbol.The“*”willappearalongside
aselectedparameterwhilethe “_”willappearundertheparameter (oritsvalue).
6.2 Memory Re-initialization
Re-initializationofmemoryreturnstheCEQ280atoitsoriginalfactorysettings.ThisoperationalsoclearstheEQ
curvestoragememorycausingallstoredcurvestobelost.Ifyouhavecurvesyouwishtosave,theycanbedumped
viaMIDItoastoragedevicesuchasthe PeaveyMIDIStreamer™ortoanotherCEQ280a.
Tore-initializememory:
1. DisconnectpowerfromtheCEQ280a.
2. PressandholdtheEQandGLOBALbuttons.
3. ReapplypowertotheCEQ280a.Thefollowingdisplaywillappear:
Memory has been Initialized
to Factory Settings