2. Dunlop
  3. M81

Dunlop M81 User manual

  • Hello! I am an AI chatbot trained to assist you with the Dunlop M81 User manual. I’ve already reviewed the document and can help you find the information you need or explain it in simple terms. Just ask your questions, and providing more details will help me assist you more effectively!
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
7
7
8
8
9
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)
9
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
/