ADL GT40 - Sound Cuts out; Noise and Interference

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A10‐1.Duringplaybackorrecordingthecomputer’sCPUoverloads

（Especiallyduringrecordingmakesureallothercomputerapplicationsareclosed.）

A10‐2.DuringplaybackorrecordinganotherUSBdeviceisconnectedtothecomputer

（ThesoundwillcutoutduringplaybackorrecordingifanotherUSBdeviceis

connectedtothecomputer.）

A10‐3.CPUisunabletoprocessdatafastenough

（IftheCPUdoesnotmeettherequiredspecificationstheexpectedresultsmaynotoccur.IftheCPUmeets

therequirements,butthesoundcutsout,closeallotherapplicationsoradjustsettingsintherecording

software）

A10‐4.ChecktoseeifbothInputandOutputsettingsintheSoundorMIDIapplicationarenotsetto24bit/96KHz.

TheTENORchipusedintheGT40hasabandwidthlimitationof12Mbps(USB2.0fullspeedoperation),and

duetothislimitationonly oneI2Sinput

oroutputcanbesetfor24bit/96KHzapplicationatonetime.

Therefore,underthiscondition,forsimultaneousmultiple‐channelapplicationsotherI2Sinterfacesmust

beconfiguredat16‐bit/48KHzor16‐bit/96KHz.Inotherwords,whenrecordingitisnecessarytosetthe

audioInputonthecomputerto24bit/96KHz

(PC‐Soundapplication;MAC‐MIDIapplication),butdonot set

nottheaudioOutputto24bit/96KHz.TheOutputshouldbesettoalower16bitresolutionuntilrecording

isdone.Thenwhenyouwanttoplaybackyour24bit/96KHzfilesthroughtheGT40youneedtoresetthe

outputto24bit/96KHzand

resettheinputtoa16bitresolution.



Q11.Noiseandinterference

A11‐1.TheGT40isplacedtoonearapplianceswithstrongmagneticfieldslikeTVs

（Placeatadistancefromapplianceswithstrongmagneticfield）

A11‐2.Checkthecomputer’sACadaptor

(Thereisthepossibilitythatthe

adaptorisnotprovidingstablequalitypower:Noiseat60Hzor120Hzor

both)

A11‐3.Connectionsarenotcorrect

（Checkallterminalsforcorrectconnection）

A11‐4.ChecktoseeifbothInputandOutputsettingsintheSoundorMIDIapplicationarenotsetto24bit/96KHz.

The

TENORchipusedintheGT40hasabandwidthlimitationof12Mbps(USB2.0fullspeedoperation),and

duetothislimitationonly oneI2Sinputoroutputcanbesetfor24bit/96KHzapplicationatonetime.

Therefore,underthiscondition,forsimultaneousmultiple‐channelapplicationsotherI2Sinterfacesmust

configuredat16‐bit/48KHzor16‐bit/96KHz.Inotherwords,whenrecordingitisnecessarytosetthe

audioInputonthecomputerto24bit/96KHz(PC‐Soundapplication;MAC‐MIDIapplication),butdonotset

nottheaudioOutputto24bit/96KHz.TheOutputshouldbesettoalower16bit

resolutionuntilrecording

isdone.Thenwhenyouwanttoplaybackyour24bit/96KHzfilesthroughtheGT40youneedtoresetthe

outputto24bit/96KHzandresettheinputtoa16bitresolution.



IfnoiseisexperiencedwhileusingGT 40withaturntable:

A11‐3. Stepone:Disconnectphonocablefrom

GT40analogline‐injacksmomentarilyandthenreconnect.

A11‐4. Steptwo:ConnectpowersourcesforGT40,turntableandcomputertothesamepowerstrip/Power

distributor



Q12:CantheADLGT40beuseddirectlywithactivespeakersviathespeaker’sRCAinputs?

A12:Yes,Pleasenotethat

whenpairingtheGT40withsuchactivesspeakers,beforeplaybacktheGT40volume

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ADL GT40 - Sound Cuts out; Noise and Interference

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