Hello. I have set up a system with: TPA 3116, connected to a pre amplifier (XH-A901), which has its audio input connected to the signal output of a bluetooth module.
The sound is working but I have some problems like: intermittent hum, regardless of input(AUX,MIC,BL). When increasing the volume, the hum is no longer heard (due to volume reasons, of course).
I tried to separate power from devices with different sources, and the problem persisted. I tried to change the pre amp, and amp and bluetooth module, for others and the problem also persists.
Another problem I have encountered is when turning on the sound, or changing music, a click is returned in the speakers. Follows used equipment and photo.
Placa amplificadora de audio, 120w * 2, tpa3116d2, canal duplo, estereo, digital, 12v 24v, tpa3116, classe d, hifi, diy, modulo de amplificador|Amplificador| - AliExpress
Placa de pre amplificador de tom verificador com ajuste de volume, ne5532, pre amplificador de tom para placa amplificadora|Circuitos integrados| - AliExpress
Placa de decodificador mp3 tela colorida bluetooth v5.0 carro mp3 player usb modulo gravacao fm aux radio para alto falante|Circuitos integrados| - AliExpress
Does anyone have any idea what it might be?
Here's video and photo.
Update your browser to use Google Drive, Docs, Sheets, Sites, Slides, and Forms - Google Drive Help
The sound is working but I have some problems like: intermittent hum, regardless of input(AUX,MIC,BL). When increasing the volume, the hum is no longer heard (due to volume reasons, of course).
I tried to separate power from devices with different sources, and the problem persisted. I tried to change the pre amp, and amp and bluetooth module, for others and the problem also persists.
Another problem I have encountered is when turning on the sound, or changing music, a click is returned in the speakers. Follows used equipment and photo.
Placa amplificadora de audio, 120w * 2, tpa3116d2, canal duplo, estereo, digital, 12v 24v, tpa3116, classe d, hifi, diy, modulo de amplificador|Amplificador| - AliExpress
Placa de pre amplificador de tom verificador com ajuste de volume, ne5532, pre amplificador de tom para placa amplificadora|Circuitos integrados| - AliExpress
Placa de decodificador mp3 tela colorida bluetooth v5.0 carro mp3 player usb modulo gravacao fm aux radio para alto falante|Circuitos integrados| - AliExpress
Does anyone have any idea what it might be?
Here's video and photo.
Update your browser to use Google Drive, Docs, Sheets, Sites, Slides, and Forms - Google Drive Help