Guardian Audio B4 Owner's manual

MaximumPower:



InputImpedance:



ChannelEqualization:



ProtectionCircuit:

180watts@4ohms

120watts@8ohms



Lo‐ZMic 1kohms

Hi‐ZMic 10kohms

TapePlayback10kohms



±15dB@5kHz



Poweronmute2seconds

GuardianAudioisaregisteredtrademarkofMottAudioLLC.

Productandspecificationssubjecttochangewithoutnotice.

B4 Owners Manual

GuardianAudioisaregisteredtrademarkofMottAudioLLC.

Productandspecificationssubjecttochangewithoutnotice.

4 TCC Channel Powered Mixer

WeuseTrueChannelCount(TCC)onallGuardianAudio®

mixers.AmicchannelconsistsofaminimumofanXLRin‐

put,EQandlevelcontrols.Astereochannelconsistsofa

minimumofapairofinputjacks,EQandlevelcontrols.

Page 2

FRONTPANELFEATURES

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1)XLRlowimpedancebalancedmicrophoneinput.Phan‐

tompowerforcondensermicrophones.Inputimped‐

anceis10kohms.TheXLRconnectoriswiredPIN1=

shield,PIN2=hot,PIN3=neutral.

2)1/4”linehighimpedanceinput.Thisinputcanbeused

forahighimpedancemicrophoneorlineleveldevice

suchaskeyboards,guitarsandCDplayers.Theinputim‐

pedanceis10kohms.Bothhighandlowimpedance

jackscanbeusedsimultaneously.

3)Channelvolumecontrol.Thiscontroldetermineshow

muchsignalissenttothemainbus.

4)EQcontrols.Theseadjusttheoveralltoneofthechan‐

nel.Theycutorboosthighandlowfrequencies±15dB.

5)Reverbcontroldeterminestheamountofreverbeffect

issenttothemainbusforeachchannel.

6)MasterVolumecontrolstheoverallvolumeofthemixer

output.

7)CD/TapeVolumecontrolstheplaybackleveloftheRCA

inputs.

8)EffectsControlleradjuststheamountanddelaytimeof

thereverbeffects.

9)PhantomPowerturnsthe15vphantompoweronoroff.

10)Phonesisaheadphonejackwithavolumecontrol.

Page 3

REARPANELFEATURES

11)Speakeroutput1/4”jacks.Theminimumimpedancefor

thisamplifieris4ohms.Atotalofone4ohmortwo8ohm

speakersmaybeconnected.Donotoperatebelow4ohms.

12)IECconnectorfor115volts60cyclegroundedACcur‐

rent.Neveroperatewithoutthegroundpin.

13)EffectsLoopReturn1/4”jackforaddingexternaleffects.

Thisis10kohm@‐10dBv.

14)EffectsLoopSend1/4”jackforaddingexternaleffects,

recordingoutoraddinganadditionalpoweramp.Thisline

levelsignalisamirrorofthemainoutput.

15)PowerSwitchturnsthemixeronandoff.Afrontpanel

LEDlitindicatesthatthepowerison.

16)TapeRecRCAjacksareforsendingsignaltoarecorder.

Thesearepre‐masteranddonothavereverbortheTape

Inputsignal.

17)TapeInputRCAjacksarefortape/CDorotherlinelevel

signal.Thisis10kohm@‐10dBv.

Guardian Audio B4 Owner's manual

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