Dunlop M81 User manual

Brand: Dunlop

Model: M81

Type: User manual

92503016739revA

M81 BASS PREAMP

SAMPLE SETTINGS

M81 BASS PREAMP

DESCRIPTION

• 3-BandEQwith

 sweepablemidrange

• Studio-qualityDirectOut

• ConstantHeadroomTechnology

™

 forclean,crystalcleartone

DIRECTIONS

•Runacablefromyourbassto

theBassPreamp’sINPUTjack

andanothercablefromtheBass

Preamp’s1/4”OUTPUTjackto

youramplier.

•TheBassPreamp’sdefault

settingisDIRECTOUT‘ON’

Mode.TousetheDirectOut

function,runabalancedline(XLR

cable)fromtheBassPreamp’s

DIRECTOUTjacktoyourmixing

boardorPA.

•Setallcontrolstotheir12

o’clockposition.

•Turnthepedalonbydepressing

thefootswitch.

•RotateOUTPUTcontrol

clockwisetoincreaseoverall

volumeorcounterclockwiseto

decreaseit.

•RotateINPUTknobclockwise

toincreasePre-EQgainor

counterclockwisetodecreaseit.

•RotateBASSknobclockwise

toboostlowendfrequenciesor

counterclockwisetocutthem.

•UseMIDFREQcontroltoselect

midrangefrequencytobe

affectedbyMIDcontrol.

•RotateMIDcontrolclockwise

toboostmidrangeor

counterclockwisetocutit.

•RotateTREBLEcontrolclockwise

toboosthighendfrequenciesor

counterclockwisetocutthem.

•WiththeDIRECTOUT‘ON’,push

inthePRE/POSTswitchtoallow

yourDirectOutsignaltobe

affectedbyINPUT,EQand

OUTPUTcontrols.WhenPRE/

POSTswitchis‘out,’yourDirect

Outsignalwillbeunaffectedby

thesecontrols.

BACK PICKUP FUNKCRUNCH

DUNLOP MANUFACTURING, INC.

P.O. BOX 846 BENICIA, CA 94510 U.S.A.

TEL: 1-707-745-2722 FAX: 1-707-745-2658

CONTROLS

OUTPUTknobcontrols

overallvolume

 GROUNDLIFTswitchengages

aDirectOutgroundlift

MIDFREQknobselects

midrangefrequencytobecut

orboostedbyMIDcontrol

 PRE/POSTswitchdetermines

whetherornottheDirectOut

signalisaffectedbycontrol

settings

 INPUTknobcontrols

Pre-EQgain

 BASSknobcontrolshowmuch

lowendiscutorboosted

 MIDknobcontrolshowmuchof

midrangefreqiscutorboosted

 TREBLEknobcontrolshow

muchhighendiscutorboosted

FOOTSWITCHtoggleseffecton/

bypass(blueLEDindicateson)

POWER

The MXR Bass Preamp is powered

by one 9-volt battery (remove

bottom plate to install), a 9-volt

AC adapter such as the Dunlop

ECB003/ECB003E, a DC Brick

™

power supply, or phantom power.

SPECIFICATIONS

InputImpedance 2.2MΩ

1/4”OutputImpedance 300Ω,40Hz

BalancedOutputImpedance120Ω,40Hz

Maximum1/4”OutputLevel +13dBV

MaximumBalancedOutputLevel -2dBV

NoiseFloor*  -98dBV

THD  0.03%,1kHz

EQControls

 Bass  ±16dB,40Hz

 Mid  ±17dB,250Hzto1kHz

 Treble  ±18dB,4kHz

InputControl  PreEQ,±10dB

OutputControl PostEQ,+20dB

Bypass**  True

    Hardwire

    Buffer

CurrentDraw 8.5mA

PhantomPowerCurrentDraw 5mA

PowerSupply 9voltsDC

*A-weighted, all controls at mid position

**1/4” Output, Internally Selectable

•PushGROUNDLIFTbuttonin

toremovepossiblegroundloop

humwhenusingtheDirectOut.

DIRECT OUT AND BYPASS

TheBassPreamp’sdefault

settingisDirectOut‘ON’and

BUFFER1/4”OUTbypass‘ON.’

WithDirectOut‘ON,’Truebypass

isnotpossiblebecausetheinput

signalmuststayconnectedto

theinputbufferinordertosend

abypasssignaltotheDirect

Out.WithDirectOut‘ON,’the

BassPreampalsooffers1/4”Out

Hardwirebypassandisselectedby

removingthepedal’sbottomplate

andbysettingswitchSW4tothe

down(‘OFF’)position.

PREAMP ONLY (

TRUE BYPASS)

TheBassPreampcanbeused

withtheDIRECTOUT‘OFF’in

ordertoutilize1/4”Outtruebypass

switching.Toactivatetruebypass

switching,setSW4andSW5to

their“down”(‘OFF’)positions.(See

DiagramA).Thissettingdisables

theDIRECTOUTsignal.

Where should you put the Bass

Preamp in your effects chain?

Ifyou’reonlyusingtheBass

Preampforits1/4”Output,put

itatthebeginningofyourchain

ofeffects.

WhenusingtheDIRECTOUT,

youhavetwooptions:

Tosendyourcleansignalto

thePAormixingconsole,putthe

BassPreampatthefrontofyour

chain.IfyouwantyourDIRECT

OUTsignalcoloredbyallofyour

othereffects,puttheBassPreamp

attheendofyoureffectschain.

PHANTOM POWER

TheBassPreampcanbepowered

throughitsDIRECTOUTfrom

equipmentthatprovidesphantom

power.Toutilizethephantom

poweroption,placetheBass

Preamp’sGROUNDLIFT

buttontotheoutposition.

(Diagram A)

DIRECT

OUT

BUFFER

1/4” OUT

Dunlop M81 User manual

Dunlop M81 User manual

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