Optimus M-243 User manual

OPERATING INSTRUCTIONS

STEREO MIXER M-243

Thank you for purchasing TOA’s Stereo Mixer.

Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

TABLE OF CONTENTS

1. IMPORTANT SAFETY INSTRUCTIONS .... 2

2. SAFETY PRECAUTIONS ............................. 3

3. GENERAL DESCRIPTION ........................... 4

4. FEATURES ................................................... 4

5. NOMENCLATURE AND FUNCTIONS ......... 5

Front ............................................................... 5

Rear ............................................................... 6

6. INTERNAL SWITCH SETTINGS ................. 6

7. BLOCK AND LEVEL DIAGRAMS ................ 7

8. DIMENSIONAL DIAGRAM .......................... 7

9. SPECIFICATIONS ........................................ 8

Accessories ................................................... 8

• Lirecesinstructions.

• Conserver ces instructions pour référence

ultérieure.

• Respectertouslesavertissements.

• Suivretouteslesinstructions.

• Nepasutilisercetappareilàproximitéd'eau.

• Nettoyeruniquementàl'aided'unchiffonsec.

• Nepasobstruerlesoricesdeventilation.Installer

conformémentauxinstructionsdufabricant.

• Nepasinstalleràproximitédesourcesdechaleur

tellesquedesradiateurs,desregistresthermiques,

des chaudières ou d'autres appareils (notamment

desamplicateurs)produisantdelachaleur.

• Ne pas contourner la fonction de sécuritéde la che

polariséeoudemiseàlaterre.Unechepolariséeest

équipéededeuxbroches,dontl'uneestpluslargeque

l'autre.Unechedemiseàlaterreestéquipéededeux

brochesetd'unetroisièmepourlamiseàlaterre.Cette

dernière,lapluslarge,estprévueàdesnsdesécurité.

Si la che fournie ne peut être insérée dans la prise

électriquesouhaitée,consulterunélectricienpourfaire

remplacercettedernière.

• Protéger le cordon d'alimentation pour éviter qu'il

nesoitpiétinéoupincé,notammentauniveaudes

ches, des prises de courant ou de son point de

sortiedel'appareil.

• Utiliseruniquementlesaccessoiresspéciésparle

fabricant.

•

 Utiliser uniquement avec le

chariot, support, trépied, la patte

demontage ou latablespéciés

par le fabricant ou vendus avec

l'appareil. En cas d'utilisation

d'un chariot, manipuler la

combinaison chariot/appareil

pour éviter les blessures dues à

unrenversement.

• Débranchercetappareil pendant les oragesainsi

que lorsqu'il reste inutilisé pendant une période

prolongée.

• Lamaintenancedel'appareildoitêtreconéeàun

technicien après-vente qualié. Une maintenance

s'avère nécessaire si l'appareil est endommagé

(auniveauducordond'alimentationoudelache),

aétémouillé par unliquide,unobjetesttombéà

l'intérieur,s'ilaétéexposéàlapluieoul'humidité,

s'ilnefonctionnepasnormalementous'ilesttombé.

• Readtheseinstructions.

• Keep these instructions.

• Heedallwarnings.

• Follow all instructions.

• Donotusethisapparatusnearwater.

• Cleanonlywithdrycloth.

• Do not block any ventilation openings. Install in

accordancewiththemanufacturer'sinstructions.

• Do not install near any heat sources such as

radiators,heatregisters,stoves,orotherapparatus

(includingamplifiers)thatproduceheat.

• Do notdefeatthesafety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 wide blade or the third prong are

providedforyoursafety.Iftheprovidedplugdoes

not fit into your outlet, consult an electrician for

replacement of the obsolete outlet.

• Protect the power cord from being walked on

or pinched particularly at plugs, convenience

receptacles,andthepointwheretheyexitfromthe

apparatus.

• Onlyuseattachments/accessoriesspecifiedbythe

manufacturer.

• Use only with the cart, stand,

tripod,bracket,ortablespecified

bythemanufacturer,orsoldwith

the apparatus. When a cart is

used, use caution when moving

the cart/apparatus combination

toavoidinjuryfromtip-over.

• Unplug this apparatus during lightning storms or

whenunusedforlongperiodsoftime.

• Refer all servicing to qualified service personnel.

Servicingisrequiredwhentheapparatushasbeen

damagedinanyway,suchaspower-supplycordor

plugisdamaged,liquidhasbeenspilledorobjects

have fallen into the apparatus, the apparatus has

beenexposedtorainormoisture,doesnotoperate

normally,orhasbeendropped.

1. IMPORTANT SAFETY INSTRUCTIONS

INSTRUCTIONS ESSENTIELLES POUR LA SÉCURITÉ

2. SAFETY PRECAUTIONS

• Beforeinstallationoruse,besure to carefullyreadallthe instructionsinthissectionforcorrectandsafe

operation.

• Besuretofollowalltheprecautionaryinstructionsinthissection,whichcontainimportantwarningsand/or

cautionsregardingsafety.

• Afterreading,keepthismanualhandyforfuturereference.

Safety Symbol and Message Conventions

Safetysymbolsandmessagesdescribedbelowareusedinthismanualtopreventbodilyinjuryandproperty

damage which could result from mishandling. Before operating your product, read this manual rst and

understandthesafetysymbolsandmessagessoyouarethoroughlyawareofthepotentialsafetyhazards.

Indicatesapotentiallyhazardoussituationwhich,ifmishandled,could

resultindeathorseriouspersonalinjury.

Indicatesapotentiallyhazardoussituationwhich,ifmishandled,could

resultinmoderateorminorpersonalinjury,and/orpropertydamage.

WARNING

CAUTION

When Installing the Unit

Lors de l’installation de l’appareil

• Do not expose the unit to rain or an environment

whereitmaybesplashedbywaterorotherliquids,

asdoingsomayresultinreorelectricshock.

• Nepasexposerl’appareilàlapluieetleprotégerde

toutcontactavecdel’eauoud’autresliquidesan

d’éviterunincendieouuneélectrocution.

• Use the unit only with the voltage specied on

theunit.Usingavoltagehigherthanthatwhichis

speciedmayresultinreorelectricshock.

• Do not cut, kink, otherwise damage nor modify

thepowersupplycord.Inaddition,avoidusingthe

powercordincloseproximitytoheaters,andnever

placeheavyobjects--includingtheunititself--on

the power cord, as doing so may result in re or

electric shock.

• Since the unitis designed forin-dooruse, donot

installitoutdoors.Whenitgetswetwithrain,there

isadangerofelectricshock.

•Theapparatusshallbeconnectedtoamainssocket

outletwithaprotectiveearthingconnection.

• The socket-outlet shall be installed near the

equipmentandtheplugshallbeeasilyaccessible.

When the Unit is in Use

• Should the following irregularity be found during

use,immediately switchoffthe power, disconnect

the power supply plug from the AC outlet and

contactyournearestTOAdealer.Makenofurther

attempttooperatetheunitinthisconditionasthis

maycausereorelectricshock.

· If you detect smoke or a strange smell coming

from the unit.

· Ifwateroranymetallicobjectgetsintotheunit

· Iftheunitfalls,ortheunitcasebreaks

· Ifthepowersupplycordisdamaged(exposureof

thecore,disconnection,etc.)

· Ifitismalfunctioning(notonesounds.)

• Topreventareorelectricshock,neveropennor

remove the unit case as there are high voltage

components inside the unit. Refer all servicing to

qualiedservicepersonnel.

• Do not place cups, bowls, or other containers of

liquidormetallicobjectsontopoftheunit.Ifthey

accidentallyspillintotheunit,thismaycauseare

or electric shock.

• Donotinsertnordropmetallicobjectsorammable

materialsintheventilationslotsoftheunit'scover,

asthismayresultinreorelectricshock.

CAUTION

When Installing the Unit

• Never plug in nor remove the power supply plug

with wet hands, as doing so may cause el

ectric

shock.

• Whenunpluggingthepowersupplycord,besureto

graspthepowersupplyplug;neverpullonthecord

AVERTISSEMENT

WARNING

itself. Operating the unit with a damaged power

supplycordmaycauseareorelectricshock.

• Whenmovingtheunit,besuretoremoveitspower

supply cord from the wall outlet. Moving the unit

with the power cord connected to the outlet may

causedamagetothepowercord,resultinginreor

electricshock.Whenremovingthepowercord,be

suretoholditsplugtopull.

• Avoidinstallingtheunitinhumidordustylocations,

inlocationsexposedtothedirectsunlight,nearthe

heaters, or in locations generating sooty smoke

or steam as doing otherwise may result in re or

electric shock.

• Besuretofollowtheinstructionsbelowwhenrack-

mountingtheunit.Failuretodosomaycauseare

orpersonalinjury.

· Installtheequipmentrackonastable,hardoor.

Fix it with anchor bolts or take other arrangements

topreventitfromfallingdown.

· Whenconnectingtheunit'spowercordtoanAC

outlet, use the AC outlet with current capacity

allowable to the unit.

· Thesuppliedrack-mountingscrewscanbeused

fortheTOAequipmentrackonly.Donotusethem

for other racks.

When the Unit is in Use

• If dust accumulates on the power supply plug or

in the wall AC outlet, a re may result. Clean it

periodically.Inaddition,insert thepluginthe wall

outlet securely.

• Switchoffthepower,andunplugthepowersupply

plug fromthe ACoutletforsafetypurposeswhen

cleaningorleavingtheunitunusedfor10daysor

more.Doingotherwisemaycauseareorelectric

shock.

L’éclairaccompagnéd’unsymbolereprésentantunepointedeècheàl’intérieurd’untriangleéquilatéral

avertitl’utilisateurdelaprésenced’une“tensiondangereuse”àl’intérieurdel’enceintedutéléviseur,

dontlamagnitudepeutêtresufsantepourconstituerunrisquedechocélectriquepourlespersonnes.

Le point d’exclamation à l’intérieur d’un triangle équilatéral avertit l’utilisateur de l’existence

d’instructionsd’utilisationetd’entretien(réparation)dansladocumentationfournieavecl’appareil.

3. GENERAL DESCRIPTION

TheM-243isastereomixerequippedwith2monauralinputs,4stereoinputs,1stereooutput,and2monaural

outputs.ItcanbemountedinanEIAcomponentrack(1Usize*).

*1Usize=44.5mmor1.75"(standardsize)

Thelightingashwitharrowheadsymbol,withinanequilateraltriangle,isintended

toalerttheusertothepresenceofuninsulated"dangerousvoltage"withintheproduct'senclosure

thatmaybeofsufcientmagnitudetoconstituteariskofelectricshocktopersons.

Theexclamationpointwithinanequilateraltriangleisintendedtoalerttheuser tothe presence

ofimportantoperationandmaintenance(servicing)instructionintheliteratureaccompanyingthe

appliance.

4 5 6 7

28 9

Inside of the

protective cover

5. NOMENCLATURE AND FUNCTIONS

[Front]

1. Power switch

Powerisswitchedonandoffwitheachdepression

of this switch.

2. Power indicator

LightswhenthepowerswitchissettoON.

3. Assignment keys [ST, 1, 2]

Select one of the following output destinations

to which the post-fader input signals are routed.

Signalsareoutputwhenpressed.

ST: Stereo output

1: MONO1output

2: MONO2output

4. Protective cover

Used to protect the setting position of the

assignmentkeys(3)fromaccidentaloperation.

Itcanbeusedasawritingplate.

5. Peak indicator

Lightswhentheoutputsignalreaches3dBbelow

clipping.Besuretoadjusteachinputlevelsothat

thePeakindicatordoesnotlightcontinuously.

6. Equalizer controls [EQ: LOW & HIGH]

Adjuststereooutputsignaltone.

LOW: Lowfrequencyadjustment(20Hz,±15

dBshelving)

HIGH:Highfrequencyadjustment(20kHz,

±15dBshelving)

7. Stereo output level control

Adjustsstereooutputlevel.

8. Input level controls [1 – 6]

(1 – 2: Monaural input, 3 – 6: Stereo input)

Adjusttheinputlevelofeachchannel.

9. Mute key

Activatesmutingwhenpressed.(Indicatorlights.)

[Muting function]

This function works only for the stereo output

channels. Attenuates the signals applied to

Channels3through6bydetectingsignalsapplied

toChannel1or2.(Thisfunctiondoesnotworkfor

themonauraloutputsignal.)

10. Monaural output level controls

Adjustmonauraloutputlevel.

4. FEATURES

• 2monauralinputs,4stereoinputs,1stereooutput,and2monauraloutputs.Assignableeachinputsignalto

3outputchannelsindividually.

• Sub-inputterminalsforstereooutputchannelandeachof2monauraloutputchannels.

• Microphone inputorline inputformonaural inputselectabledependingon thesignal level.Built-in limiter

circuitryeliminatesdistortionunderexcessiveinputlevels.High-passlteraswellasPAD(onlyforMICinput)

inthemonaurallineavailablebytheinternalswitchsettings.

• Peakindicatortodetectclipping.

• An"AutomaticMuting"circuitautomaticallymutesthestereooutputsignalbydetectingthemonauralinput

signal.(ON/OFFswitchable)

• Arecordingoutputandequalizer(highandlowfrequencies)forthestereooutputchannel.

• 2channelmonauraloutputsusableassumoutputsforthestereooutputchannelindividuallybytheinternal

switch setting.

• Protectivecoverforprotectingthesettingpositionofeachinputusableasawritingplate.

• Knobssupplied indifferent colorsand sizeeasilyreplaceable dependingon theintended use, improving

operability of the unit.

STEREO BUS

MONO 1 (2)

SWITCH

MONO 1 (2)

BUS

STEREO OUT

MONO 1 (2) OUT

[Factory default setting] [After the change]

STEREO BUS

MONO 1 (2)

SWITCH

ST SUM

MONO 1 (2)

BUS

STEREO OUT

MONO 1 (2) OUT

Change in setting

6. INTERNAL SWITCH SETTINGS

11 12 13 14 15 16 17

[Rear]

11. AC inlet

Connectthesuppliedpowercord.

12. Functional earth terminal

Hum noise may be generated when external

equipment is connected to the unit. Connecting

this terminal to the functional earth terminal of the

externalequipmentmayreducethehumnoise.

Note: Thisterminalisnotforprotectiveearth.

13. Monaural output jacks

Function as sum output for the stereo output

channel by the internal switch setting. (Referto

section"6.INTERNALSWITCHSETTINGS.")

14. Stereo output jacks

15. Recording output jacks

Output the signal from the stereo output bus for

recording.

16. Monaural sub-input terminals

Signals from these terminals are sent to each

monauraloutputbus(Mono1andMono2).

17. Stereo sub-input terminals

Signals from these terminals are sent to stereo

output bus. Connecting the signal to only "L"

permitsittobeinputtoboth"L"and"R."

18. Stereo input terminals (3 – 6)

OnlyCH6'sRCAjacksareinternallyconnectedin

paralleltophonejacks.

19. Monaural input terminals (1, 2)

SelecteitherMICorLINEforconnection.Ifboth

areconnected,LINEinputtakesprecedence.

Thefunctionsbelowcanbemadeavailablebychangingtheswitchsettingsinsidetheunit.

(1)"PAD"switch:Settothe"IN"positiontoinsertPAD(20dB)inthemonauralinput(microphoneinput).

(2)"HPF"switch:Settothe"IN"positiontoinsertHighpasslter(300Hz,–6dB/oct)inthemonauralinput.

(3)"GND"switch:Whentheunitisconnectedtoexternalequipment,agroundmaycreatealoop,potentially

generatinganoise(hum).Insuchcases,setthisswitchtotheLIFTpositiontocutoffthegroundloop.

(4)"MONO1"and"MONO2"switches:Settothe"STSUM"positiontochangeeachmonauraloutputtostereo

sum output for the stereo output channel.

This work should only be performed by a qualified professional

electrician. Ifusersopen theunit case ormodify theunit, thismay

cause fire or electric shock.

WARNING

8. DIMENSIONAL DIAGRAM

466 (18.35)

419 (16.5)

483 (19.02)

280 (11.02)

301.8 (11.88)

7 x 10

(0.28 x 0.39)

(1.81)

(0.59)

31.8

(1.25)

(1.73)

Unit:mm(in)

7. BLOCK AND LEVEL DIAGRAMS

CH1, CH2

(MONO INPUT)

LINE

–10 dB

REC

OUT

10 dB

STEREO

OUT

4 dB

MONO

OUT

4 dB

MIC

–60 dB

CH3 – CH6

(STEREO

INPUT)

–

10 dB

STEREO

SUB INPUT

4 dB

MONO

SUB INPUT

4 dB

LR12

(dB) (dB)

–10

–20

–30

–40

–50

–60

MONO

CH6

CH1

CH2

ON/

OFF

PAD

(20 dB)

MUTE

BUS

STEREO MONO

ST SUM

POWER ON

MUTE

MONO 1

MONO 2

INTERNAL SWITCH

PEAK LED TURN ON

17 dB)

CLIP LEVEL

20 dB)

MONO OUT

STEREO OUT

REC OUT

(+4 dB)

(

10 dB)

(IN/OUT)

CH6

EBA

PAD

VOL

HPF

MONO 1

PEAK

LOW HIGH

MONO 2

MUTE

LIMIT

STEREO

ASSIGN

MUTE

CONTROL

–10

MIC/PAD

(–40 dB)

MIC

(–60 dB)

STEREO IN (–10 dB)

LINE (–10 dB)

SUB IN

4 dB)

9. SPECIFICATIONS

Power Source M-243L: 120VAC,60Hz

M-243301H:220–240VAC,50/60Hz

PowerConsumption M-243L: 10W

M-243301H:12W

MonauralInput Line: –10dB*,10kΩ,unbalanced,φ6.3mmphonejack(2P)

Mic: –60dB*,1kΩ,balanced,3-pinXLRconnector

Mic(Pad): –40dB*,1kΩ,balanced,3-pinXLRconnector

StereoInput(L,R) –10dB*,10kΩ,unbalanced,RCAjack

AuxiliaryStereoInput +4dB*,50kΩ,unbalanced,φ6.3mmphonejack(2P)

StereoOutput(L,R) +4dB*,1kΩ,unbalanced,φ6.3mmphonejack(2P)

Monaural Output +4dB*,1kΩ,unbalanced,φ6.3mmphonejack(2P)

RECOutput(L,R) –10dB*,1kΩ,unbalanced,RCAjack

Frequency Response 20Hz–20kHz(+1,–2dB)

T.H.D. 0.01%orless(1kHz,ratedinput/output)

NoiseLevel(IHF-A) Whenallvolumecontrolsareinminimumposition.

Stereooutput(L,R): –105dB*orless

MonauralOutput(1,2): –98dB*orless

Whenthestereo,monaural(1,2)areinmaximumposition

Stereooutput(L,R): –94dB*orless

MonauralOutput(1,2): –95dB*orless

Finish Front Panel: Alumite, black

Case: Steel,black

Dimensions 483(w)x46(h)x301.8(d)mm(19.02"x1.81"x11.88")

Weight 3.8kg(8.38lb)

*0dB=0.775Vrms

Note: Thedesignandspecicationsaresubjecttochangewithoutnoticeforimprovement.

• Accessories

Powercord(2mor6.56ft) ........................1

Rackmountingscrew(5x20) ................... 4

Rubber foot ................................................ 4

Knob(blue,small) ..................................... 2

Knob(red,small) ....................................... 2

Knob(blue,large) ...................................... 1

Knob(red,large) ........................................ 1

URL:http://www.toa.jp/

133-02-00051-01

Traceability Information for Europe

Manufacturer:

TOACorporation

7-2-1,Minatojima-Nakamachi,Chuo-ku,Kobe,Hyogo,

Japan

Authorizedrepresentative:

TOAElectronicsEuropeGmbH

Suederstrasse282,20537Hamburg,

Germany

Optimus M-243, M-243 301H, M-243 L User manual

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