• With a solder paste dispensing needle, we added solder paste to the component pads to begin the PCB assembly process. Here, we are using standard Sn/Pb 63/37 solder paste.
• Next, we place all the SMD components in their places using an ESD tweezer.
• After that, the PCB was put on the Reflow Hotplate, which raises the PCB's temperature from below to the point at which solder paste melts and all of the components are soldered to their pads.
• Next, we install the THT potentiometers in their designated locations and use a soldering iron to solder the pads.

Following circuit assembly, we mounted the lever switch in the designated holes on the PCB using the included washer and nut

• The speaker assembly, which is likewise rather straightforward, comes next. Here, the speaker is installed from the bottom side of the PCB.
• Four M2.5 nuts and bolts are used to mount the speaker along with the PCB.

• The wiring of the switch was really simple; each switch has its own CON2 Port, which we attached to the PCB. All we have to do is connect the switch terminals to the PCB's CON2 port using a soldering iron and jumper wire.
• We did this process for all four switches.

• The circuit is now positioned above the enclosure, and the two are fastened together using four M2 screws.
• Finally, we installed a DC barrel jack connection to the enclosure and linked its positive and negative terminals to the circuit input terminals. This DC barrel jack will supply the device with 12 volts.
• The assembly is now complete.

Here's the result of this simple build: a functional, extremely loud sound box that produces a wide variety of tunes and rhythmic tones.

To operate this device, you must first flip any lever switch and then adjust the sound using any potentiometer. The user can create a variety of melodies by activating and deactivating lever switches.

Overall, this project was a success and needs no further revisions.

Special thanks to HQ NextPCB for providing components that I've used in this project, check them out for all sorts of PCB or PCBA-related services for less cost.

Thanks, and I will be back with a new project soon.