2. Helmer
  3. L50

Helmer L50 User manual

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Contents
SafetyInformation
Chapter1:Understandingyouramplifier
1.1Features
1.2PackageContent
1.3WiringInstruction
1.4DeviceLayout
Chapter2:Installation
Chapter3:GettingStarted
3.1Display
3.2TurnON/OFFthedevice
3.3Bluetooth
3.4AUXIN
Chapter4:TechnicalParameters
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SafetyInformation
1.Don’tusethisproductinawetenvironment.
2.TheproductappliestopowersupplyAC100‐250V,ifyoudon'tuseitfora
longtime,pleaseturnoffthepower.
3.Pleasemakesurethatthespeakerline,powerline,audioinputlineare
connectedcorrectly.
4.Don’topenandrepairtheproductbyyourself.
5.Iftheproductcrashes,youcanpresstheresetbuttoninthelowerleft
corneroftheproducttoreset.
Chapter1:Understandingyouramplifier
1.1Features
1.Touchpanelwith6quickbuttons.
2.StereoAmplifierModule(2x15W)
3.Bluetoothconnectivityforwirelessaudioinputofsmartphone,pad,etc.
4.1xWiredAudioInput(onrearPCB)
5.USBandTFcardplayer(atbottomofunit)
6.SupportMP3,WMA,MAVformat.
7.Builtinpowersupply
1.2PackageContent
1xamplifier
2xscrewsformounting
1xwallbracket
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1.3WiringDiagram
1.4DeviceLayout
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Chapter2:Installation
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Chapter3:QuickStart
3.1Display
3.2TurnON/OFFthedevice
LongpressON/OFFbuttonondevicetoturnonthedevice.Thenyoucan
choosetheinputsourceandadjustvolume.
LongpressON/OFFbuttonondeviceagaintoturnoffthedevice.
3.3Bluetooth 
ClickBluetoothtoenablethefunction.YoucanfindtheBluetoothname
“WISE”frommobilephoneorpadtopairwith.Thenyoucanplaymusicfrom
phonetoamplifier.
WhenyouhaveUSBorTFcardconnectingindevice,youcanclickBluetooth
toselecttheaudiosourcefromBT/TFCARD/USBDRIVER.
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3.4AUXIN
ClickAUXINtochoosetheaudioinputsource.
WhenyouhaveUSBorTFcardconnectingindevice,youcanclickAUXINto
selecttheaudiosourcefromAUXIN/TFCARD/USBDRIVER.
Chapter4:TechnicalParameters
3"TouchbuttonScreen
PowerSupply:AC100‐240V
OutputPower:15W+15W(Max)
InputImpedance:10KΩ
OutputImpedance:4‐8Ω
THD:0.03%
Frequencyresponse:20Hz‐20KHz
ExtendedSDcardupto64G
BluetoothTransmissionDistance:≤10M
Productsize:86x86x44mm
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