This is a desk audio amplifier I designed and built to quickly switch between 2 audio sources and apply custom analogue Baxandall EQ to audio without software dependency. It is capable of delivering a maximum of 2x5W output compatible with 4 ohm and 8 ohm speakers.
Yesterday, all my parts have arrived!! Soldering them one by one took me 3 hours. The PCB turns out perfect as expected and the slide potentiometer is just as smooth. It didn’t work at first… However a reflow saved both my time and money spent lol. Overall it worked great, the baxandall tone control works and it is so fascinating to be building one myself. However at first the tone control didn’t work because of a mismatch of ground plane of the aux input and common ground. So i shorted the aux ground directly to the common ground. I made 3 shorts on the best location for EMI, and the buzzing noise is completely gone (at least to my ears)! The soft underglow also turned out greattt. So ill be vibing and booming with my new audio amplifier 24/7, and as i vibe, ill continue with my github repo. stay tuned then!
While waiting for all my parts to arrive, i worked on the github repository bill of materials. once all parts arrive, ill solder them!!
Last few days, i worked on the PCB layout, i kept it at a size of 90x90 to fit on my desk, and also there’s a warm white backlight on the bottom so it gives vibee i dont really know how will it look like but i have good feeling about it! anyways i ordered the pcb on JLCPCB and ill be very excited for it haha, then i can solder everything and hopefully it works.. if not, uhh….
Today is the first progress of my diy custom audio amp. i completed my schematics and pcb layout. Im basically using a ht8696 audio amplifier module alongside with baxandoll tone control circuit, also made it togglable whether to apply tone or not. Im surprized by today’s progress its really quick without realising, im excited to move on to the pcb wiring tomorrow. today’s task definitely motivated me alot and i plan to order my pcb in a few days!!
