Abra AK-30 User manual

DIY Mini Amplifed Speaker KitDIY Mini Amplifed Speaker Kit
AK-30

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DIY Mini Amplifed Speaker Kit Assembly Instrucons
1. Locate the two PCB’s and the enclosed component set for each.
 LocatethenysurfacemountamplierIC’sinthecomponentsetthataretobemountedtotheboomofthe
PCB’s.
 SoldertheICamplierstotheboomICpadsmakingsurethatthedotontheICisatpin1.
 (SeeFig.1)
2. RefertotheenclosedPCBcomponentlayoutdiagramfortheresistorvalueplacementandthecorrectorientaon
fortheelectrolyccapacitorsonthePCBandsoldertheminplace.
 Useanohmmetertomeasuretheresistorvaluesifnotsurewhichiswhich.
 Notethatthereisa50KpotenometerinRP1anda10KpotenometerinRP2posion.
 TheVUmeterLED’sD1,D2,D3aregreenD4isyellowandD5isred.
 (SeeFig.2)
3. Locatethetwolengthsofredandblackwires.
 SoldertheredtoV0+andtheblacktoV0-onP3ofbothPCB’s.
 Thesearespeakeroutputsthatwillbeconnectedtothespeakers.
 (SeeFig.2)
Fig.1
Fig.2

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4. Locatethethreeconductorandfourconductorwirelengths.
 Selectthethreeconductorwire(red,yellow,black)andcutitinhalf(twoequalparts).
 Thiswillbeusedforthe5Vpowerconnecon.
 Stripbothendstoexposethewires.
 Cutotheyellowwiresonbothendsofbothwires.
 Solderaredwiretothe+5VandablackwiretotheGNDconnectorP1oneachoftheboards.
5. Selectthefourconductorwire(red,green,yellow,black)andcutitinhalf(twoequalparts).
 Thesewillbeusedfortheaudioinputandwillbeconnectedtothe3.5mmstereoconnector.
 Stripbothendstoexposethewires.
 Cutotheredwiresonbothendsofbothwires.
 Ononeofthecablescutotheyellowoneachendleavingblackandgreenwires.
 Ontheothercablecutothegreenoneachendleavingblackandyellowwires.
 ConnecttheyellowwiretoIN+andtheblackwiretoIN-onP2ofoneoftheboards
 ConnectthegreenwiretoIN+andtheblackwiretoIN-onP2oftheotherboard.
 (SeeFig3)
6. Peelotheprotecvepapercoangsontheacrylicspeakerenclosurepanels.
 Mountthespeakerstotheirfaceplatesusingthelargerdiameterscrewsandnuts.
 SoldertheredVO+andtheblackVO-wiresonthePCB’stothespeakerterminals.
7. Installfourbrassstandoswithnutstoeachofthetworearpanels.
 MountthePCB’stothestandoswiththelargerscrewswiththewiresfacingtheexitcutout.
8. Insert4oftheM2screwsintotheopeningsonthespeakerfaceplate.
 AachanM2nuttoteachofthescrews.
 Proceedtoinstalleachofthefoursidetopandboompanelstothespeakerpanellockinginthescrewsand
 nutsintothecut-outsonthepanels.
9. Takethetwored+5VandblackGND(P1)powerwiresfrombothPCB’sandtwistthetworedwiresandthetwo
 blackwirestogether.
 Solderthetwored+5Vwirestothecenterpinofthe2.1mmDCpowerconnectorprovidedandthetwoGND
 wirestotheoutsidegroundconnecon.
Fig.3

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10. Takethetwoaudioinputwiresandtwisttheblackgroundleadstogether.
 Solderthegreenandyellowwirestothetwoinside3.5mmstereoconnectorpinsrespecvely.
 Soldertheblackwirestotheoutsidegroundconnecon.
 (SeeFig.4)
11. Connectthe3.5mmtoanaudiosource.
 ConnecttheUSBconnectortoacomputerportorUSBadapterandplugitintothe2.1mmDCpowerconnector
 justwiredtopowerup.
 Setthe50KRP1potenometertofullclockwiseposionformaximumvolume.
 Withpoweronandthespeakersplaying,adjustthe10KRP2potenometersothattheredtopmostLEDVU
 indicatorjustcomesonatmaximumvolume.
12. Runthepowerandaudioinputwiresthroughthecutoutontherearpanelandinstallthe
 rearpanelusingtheremainingM2screwsandnuts.
 (SeeFig.5)
13. Enjoythesound.
Fig.4
Fig.5