Cheap Chinese Amp Boards - I Pick One - Page 1
Forum section: electronics / general

author: vidarr
author_rank: Frequent Contributor
timestamp: March 26, 2025, 05:02:53 pm
content: My BT speaker finally died after 12 years. It was a Megaboom 2. Once a certain frequency, or volume is reached, it goes distorted and cuts out. I tore it down and inspected it; it is over.So, I was looking at these Chinese Amp boards with BT and wondering if they are any good. I got it narrowed down to three options:-------------------------------------------------------------------------------------TPA3255 Stereo Digital Amplifier BoardTDA7498E 2.0 High Power Digital Power Amplifier BoardTPA3116D2 Digital Audio Amplifier Board 2.1 Channel Stereo Sound-------------------------------------------------------------------------------------All three are pretty cheap and found on Aliexpress. I understand the differences and looked over the datasheets.Maybe it is kind of close to comparing non-alike things, but I just want some opinions. If you had/have one of these or heard one that would be great to know about.I think the TDA7498E might be a good option to make two active speakers with (one board each speaker).If I go with the TPA3255, I don't have to do as much work to get a final product done. The BT boards are super easy to connect and cost about $0.50. It is the newest of the three and has very good reviews regarding sound and quality. (Probably my favorite of the three.)The TPA3116D2 has 2.1, so I can use the subwoofer I already have straight away with the amp board. (This is probably my least favorite of the three however.)If you think I am overlooking some, maybe better, option, let me know.BTW, will be powering it with a 48VDC 10 Amp PSU made for audio.Thanks Guys!

author: shabaz
author_rank: Frequent Contributor
timestamp: March 26, 2025, 06:58:58 pm
content: I think a lot of it may come down to the integration of it all, e.g. if mains hum is introduced, or if the levels cause distortion, or if any signal processing is needed to suit your speakers and enclosure, as well as the potential quality of the modules you're considering, so be prepared to experiment a little and maybe try different things.Depends on if the desire is to have a DIY project or not but if it's just a means to an end, then wouldn't it be overall still relatively low-cost, and easier to buy a used replacement? For instance, the one in the screenshot comes with a CD player attached.

author: vidarr
author_rank: Frequent Contributor
timestamp: March 26, 2025, 07:27:37 pm
content: Oh, wow. I didn't look for that kind of option/deal because I was thinking I would make this a small project, pretty small, maybe 8 hours max of assembly time. I already have JBL monitor speakers and an empty DAC housing that I clad in rare, illegal to ship out of the country without papers, so dense it sinks in water, Brazilian hard wood, that has a natural red color and amazing grain.But that setup you posted there is a good deal. It is very tempting to just be done with this without doing anything. The wood I have is just so beautiful, amazing...Thanks!Trivia:"Pau Português (Wood)Brazilian pau, also known as brazilwood or Pernambuco wood, is a type of wood that played a significant role in the naming of Brazil. The Portuguese named these trees "pau-brasil," where "pau" means wood, and "brasil" means reddish or ember-like. This wood was highly valued in Europe for its red dye, which was used in luxury textiles, and for its distinctive color. The discovery of this wood by European merchants sparked a fever of harvesting, leading to the land being referred to as "Terra do Brasil," or "Land of Brazil," which eventually became the name of the country." --AI internet search.