Mesa/Boogie Mini Rectifier Twenty-Five - Master; Standby and Power on

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dentlyoftheotherrotarytonecontrolsandiscrucialinvoicingtheModes.Itisapowerfulglobal
tonecontrol.LowerPRESENCEControlsettingsdarkenand,infactcompressthesignal,which
workswelltofattensinglenotesolosounds,givingthemgirthandfocus.Someofthebestlead
soundsinyourRectowillfindthePRESENCEControlinitslowerregionswhereabalanced,vocal
responseisachieved.
OneexampleofthiswouldbewhendialingupBluesysolosoundsintheCLEANMode.Here,it
ishelpfultoaddgainearlyinthepreampwiththeGAINandTREBLEsethigher(5:00&2:00)thannormalandthenrollback
thePRESENCE(9:00–10:00)togetthesoundtowarmupagain.Thisschemecanberepeatedthroughoutallthemodesand
alsoinreverse-wherethePRESENCEishigherandtheTREBLEisreduced.Thatsaid,manyofthebestsoundsareachieved
withbothTREBLEandPRESENCEstrayingabove12:00noononlyoccasionally,astheybothpackpowerfulfrequenciesthat
canbedangerousatthetopoftheirrange.
HighersettingsunleashthemightyroarofyourMiniRectoandproducebrighter,morepointedsoundsthatwillcutthrough
amix.ThiscanbegreatforsparklingcleansoundsinChannel1andmoreaggressivecrunchrhythmsoundsinPUSHED,
VINTAGEandMODERN.
MASTER
Thiscontrolisthefeedfromtheendofthepre-amptothedriverstageandtheEffectsLoop.Asyoucansee,
eachChannelisfittedwithitsownMASTERControl,enablingthetwochannelsrelativevolumestobematchedregardlessof
theirextremelydifferentsoundstylesandgainsignatures.TheMASTERControlmakes
possibleawiderangeofsoundsthroughitsabilitytouseverylowGAINsettingsathigh
volumesandconversely,highGAINsettingsatlowvolumesandeverywhereinbetween.
Again,wesuggestusingtheMASTERControlinitssensibleranges(9:00-2:00).Here,
thechannelswillbeeasiertomatchwitheachotherandtheEffectsLoopwillseemore
reasonablesignallevels.
NOTE:BecausetheMASTERControldeterminesthesendleveloftheEffectsLoop,extreme
settingsmaycausepossibleoverloadingofFXprocessor’sorpedal’sInputstage,butalso
maymakebalancingthetwochannels’EffectSendleveldifficult.
STANDBY
Perfectforsetbreaks...thistoggleswitchalsoservesanevenmoreimportantpurpose.Fromcold-start,the
STANDBYpositionallowsyoutowarmupthetubes-especiallypowertubes-beforeapplyingthehighvoltagebyswitchingthe
Standbytothe“ON”position.BeforePOWERisswitchedto“ON”-makesuretheSTANDBYswitchisinthe“STANDBY”position.
Waitatleast30secondsandthenfliptheSTANDBYswitchtotheONposition.Thispreventstheshockofhighvoltagehitting
coldtubesandreducesthelikelihoodoftubeproblemsandincreasestheirtonefullifesubstantially.
POWER ON
ThisswitchdeliverstheA.C.powertotheMiniRecto.Makesuretheunitisgrounded(allthreeterminalsof
theA.C.powercordmustbeconnectedtoavoidinjurytotheuseraswellastotheunit)andthatthepropervoltageispresent.
AlwaysfollowthecoldstartproceduredescribedintheSTANDBYsectionabovewhenpoweringupyour
amplifier.Thiswillreducethelikelihoodoftubeproblemsandincreasetheirmusicallife.
ThatcoverstheChannels,ModesandControlsfoundontheFrontPanelofyourMiniRecto,nowlet’s
swingaroundtotheRearPanelandtakealookattheLoopandSpeakerOutputs.
PRESENCE
WARM
& VOCAL
BRIGHT &
AGGRESSIVE
MASTER
25 WATTS
10 W
25 W
10 WATTS
MOST SENSIBLE RANGE
EASIEST TO BALANCE CHANNELS
REASONABLE FX LOOP SIGNAL LEVELS
POWER
STANDBY
FT
SW
CH 1
CH 2
ON
ON