Probably a plan should begin wih practical speakers you have dc resistance measurement, then we can rule out designs, who can't handle that load. Tda7293/7294 don't like low ohms and high supply voltage. Also for schematic, datasheet is a good start, sometimes it contains even sample layout and variuos recomendations. Are your satelittes wide band ,or they're should get bass-free signal?
What I currently have are two speakers and a subwoofer :
I love their style, but it's a shame that the quality of the amplifier is mediocre, with issues of freezing. I've already fixed a freezing issue myself (I tried many solutions and don't even remember which one solved the problem). Right now, I don't really feel like trying another repair
I found this diagram online (without a link to the PCB layout or the component list... I’m not sure if the site offers them for free or not). It’s a good start. I need to find a way to add an output for the subwoofer as well. Also, I need something to control the volume remotely
I love their style, but it's a shame that the quality of the amplifier is mediocre, with issues of freezing. I've already fixed a freezing issue myself (I tried many solutions and don't even remember which one solved the problem). Right now, I don't really feel like trying another repair
I found this diagram online (without a link to the PCB layout or the component list... I’m not sure if the site offers them for free or not). It’s a good start. I need to find a way to add an output for the subwoofer as well. Also, I need something to control the volume remotely
Satellites specified as 4 ohms, subwoofer 3 ohms, those i would call low impedance. This rules out many designs, and in case of tda7294/7293, you may even need several ic with master/slave parallel connection, to handle such loads. Or use single ic's , but underpowered .
Then why not switch to a different circuit, one that's not the TDA7294, and more suitable for low-impedance speakers .. chatgpt suggest TPA3255 ..
https://fr.aliexpress.com/item/1005005947504686.html
I'm completely lost... I'm even thinking about giving up ..
https://fr.aliexpress.com/item/1005005947504686.html
I'm completely lost... I'm even thinking about giving up ..
Can't comment on this chip, as i have not used or tried it. Question is exact specifications of this already assembled thing. Also china loves to overrate things by many times. Case from photo looks small, question how many wats psu is inside, and how long it will last. Maybe someone tried that and can comment?
I wasn't able to fix my home theater, so I'm coming back to the idea of building an amplifier for the speakers and subwoofer that I have.
What do you think of this small amplifier to start my build?
https://fr.aliexpress.com/item/1005006967880137.html
What do you think of this small amplifier to start my build?
https://fr.aliexpress.com/item/1005006967880137.html