mxr M103 Blue Box User manual

92503010111 revB
M103 BLUE BOX

SAMPLE SETTINGS
M103 BLUE BOX
DESCRIPTION
•Fuzzesupyourguitarsignal,then
duplicatesittwooctavesdown
•Blendcontrolsetsmixofwet
anddrysignals
CONTROLS
 OUTPUTcontrolsoverall
volumeofeffect
 BLENDcontrolsmixorwet
anddrysignals
 FOOTSWITCHtoggles
effecton/bypass(redLED
indicateson)
DIRECTIONS
•Runacablefromyourguitarto
theBlueBox’sINPUTjackand
runanothercablefromtheBlue
Box’sOUTPUTjacktoyour
amplier.
•TurntheOUTPUTknob
clockwisetoBOOSTthe
effect’soverallvolume.
SPECIFICATIONS
InputImpedance 1MΩ
OutputImpedance <20kΩ
InputSensitivityLevel -56dBV
NominalInputLevel -22dBV
MaxOutputLevel -5dBV
NoiseFloor* >100dBV
Bypass Hardwire
CurrentDraw 
  EffectOn 4mA
  EffectOff 1.5mA
PowerSupply 9voltsDC
0 dBV = 1Vrms
*All controls @ full clock wise position. A-weighted
•RotatetheOUTPUTknob
toincreaseoverallvolumeof
effectorcounterclockwiseto
decreaseit.
•RotateBLENDknobclockwise
toincreaseamountofsub-octave
fuzzorcounterclockwiseto
decreaseit.
7th ARMY
FAT FUZZ
DEE PHUNK
MAG-LITE
DROOLIN’ IN
THE RAIN
POWER
TheMXRBlueBoxispowered
byone9-voltbattery(remove
bottomplatetoinstall),a9-volt
ACadaptersuchastheDunlop
ECB003/ECB003E,oraDCBrick™
powersupply.
DUNLOP MANUFACTURING, INC.
P.O. BOX 846 BENICIA, CA 94510 U.S.A.
TEL: [phone] FAX: [phone]