SBBB bluetooth speaker

prusaprinters

It's a Small Box with Big Bass (at least that's what i want it to be...) https://youtu.be/05p6EjRsf4E Note : the microphone of the camera really doesn't do justice to the sound :-/ Features : True extra bass sound system with Xtra Long Pass (© XLP) passive radiator, doesn't sound as cool as it's name but not bad either class D amp between 10-15w rms 2x 18650 battery (should get 10 hours at reasonable level) What you have to put inside : SQ 251 4ohms speaker https://fr.aliexpress.com/item/4000540507550.html passive radiator 40*70 https://fr.aliexpress.com/item/4001014691399.html pam8610 with integrated bluetooth https://fr.aliexpress.com/item/32732590506.html dc step up that could handle 2A or more from ~4V input to 15V output The one in picture is pretty decent some capacitor to smooth current spike (I put 2200 + 3300 /25V at the amplifier voltage input and 2200 10V at the step-up input) one power button, one Led with it's resistor and 3 push button a USB plug, I put one diode (1n4004) on it to charge the li-ion 2x 18650 lion in parallel (you could go with only one if you want) some screws soldier skill and a creative mind, this is not a ready to assemble kit, for example you have to figure out where to drill Some hints : print with at least 50 % infill or more to make the box sturdy Glue everything inside before the last closing to avoid any rattle add some light foam or glass wool Make the box as watertight as possible to improve bass (I put some tyre tube on the back but you should better glue it all or "PLA solder" it) glue the border of the passive radiator do the wiring in order to be able to charge it even when it's off. The power button should be on the li-ion to be sure that when it's off nothing discharge the li-ion Listening test : It's definitively louder than my JBL go2 which was the goal ! I find it pretty descent with correct bass response. Note that the one in picture is a prototype with different speaker The original solidworks files are here, feels free to mods as you want ! I only demand some pictures of your creations ^^ Print Settings Rafts: No Supports: No Resolution: 200 Infill: 20 Filament: PolyMaker PLA Category: Audio