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With these chinese stuff (not being racist but these amps are typical chinese market for car audio) you can do anything! If you are not affraid of soldering a bit you can really go any way you want. Made a mini boombox and a mp3 player just because i felt fancy and wanted it to match a hoodie of mine... ^^
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Wow, very impressive looking! How does it sound??
Very awesome! Yeah, that amp gets loud!
The amplifier is a lepy 2020a+, as i said, thanks to you, I discovered this amp! The amp drives a pair of old (10years or so) sony speakers that came with a stereo system. I gutted them for the cones and tweeters, replaced the caps, and build new enclosures for them (the boombox).The amp itself is not 20w rms / channel in 8 ohm load but trust me when I say it's power is enough for a party. With a pair of boston acoustics speakers it is actualy quite good, not hifi, but definetly above average.The system sounds good to me 8/10.There is room for improvement, but i'll leave that to another project.
It is finaly rdy, but unfortunetly i had to remove a switch from it because it caused interference with the amp. It turned out just the way i imagined it first.I used some coarse hemp cloth for the front and back, some kind of elstic denim for the rest of it, and some rope. the fabric and rope was glued with contact adhesive, the quick drying time ( 3 minute ).i used wax to seal the fabric, just rub it in from a stick, candle, etc. and melt it in the fabric with a hairdryer.
Ooo, really cool. Very good looking system you got there!
Very well layed out instructibles, thanks to you I discovered this fantastic little amp, it saved me a whole lot of soldering. initially I wanted to build a lm3886 gainclone to power this boombox, but decided on this amp.I still need to finish the outside and wire the vu-meters, but it is almost there.I used 8mm plywood for everything, some woodglue, epoxy and some pipe(pvc) for the speaker holes.
Oh no! They must have changed the design. Yes, you are absolutely correct. That's how I found my 5V. Solder your ground wire to the same ground wire of where you were probing and solder the positive wire to the 5V spot you identified. Have you used the screen running on 12V with the raspberry pi? To confirm it works? I did that first and then I tried it with the 5Vs to confirm it still works.
Also, the black half of the capacitor is ground.
Ok, so I found that the two capacitors that are in line read 4.99 volts, do I solder one wire to each post of the cap? I don't know if they are polarized, theres a circle under each one split down the center, one side is blank, the other side has cross hatching
I bought the backup screen that you suggested in your link, but the circuit appears to be totally different than your setup, I have very little electronics experience and I have no idea how to test for the voltage and where on the board to look. I have a multimeter, Do I just hook up the display to 12 volts, ground the multimeter on the black wire on the connector then just look around for a spot that reads 5 volts? I hate to bother you, but if you don't mind I'd like your help with this and maybe a couple other questions in the future.
Thank you! Great!
Nicely done! I think I have a boomcase build in my future, I'll be referring back to this soon :)
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