HifiBerry Amp 2 / RaspberryPi 3A small upright amplifier
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This is a potent (50wpc rated) connected (Bluetooth, AirPlay, ...) amp based on Pi and Hifiberry components.
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Audio
- Licencja
- Creative Commons — Attribution
I printed this on a Prusa Mini using Inland PLA+. It's designed to be easy to print.
Set the base flat and right side up, supports suggested for the base insets for the rubber feet. Set the cover upside down.
Generate supports at 40degrees.
0.15 STRUCTURAL Print settings.
Generic PLA Filament.
Supports For support enforcers only.
No Brim.
I used Sketchup when I made this several years ago, which is fun and fast - but quite error prone for small models, hence the error repair note and 22 open edge warning. It prints fine! I might try to do something over again in onshape and file some clean .step files.
Assemble the Pi and Amp2 together with the parts list on this helpful link from Digikey, reserving 4 screws for the assembly to the base and the feet fro final assembly.
Note these screws are expensive - cheaper screws are likely available at your local hardware store. I put these on the list so you have a complete source. Plain steel is best for assembly so you can use a magnetic tip screwdriver.
Also, the SD Card is just the cheapest option at Digikey. I'm sure you can find alternatives locally if you don't already have some sitting in a drawer.
Slide the assembly into the base.
Insert the screws through the holes in the base into the Amp2 assembly. That magnetic tip screwdriver is helpful here. Tighten "snug".
Carefully slide the cover into the base and seat it firmly down. It will snap together tightly and won't rattle. Be careful when taking the cover off - PLA can be brittle. Or print it in PETG. I've had it for several years, with a dozen or more cover removals, and it's fine.
Apply the rubber feet to the insets in the base.
You'll need a power supply and your choice of software to drive the Pi. I am happy with HifiBerry's offerings. (Software, Power supply). Hifiberry has installation instructions for their software here.
Wire your speakers through the connector block and screws in the right rear corner. Polarity is marked on the board behind the block, visible through the screw access port.
I think it sounds pretty good on the range of speakers I've used it with. It might best be qualified as mid-fi, but so were the speakers I used :-).