I built this case around a Chinese amp board, the "PJW063." It's based on a TPA3255 amp IC and offers decent Bluetooth connectivity.
I've rewired the inputs (Bluetooth, 3.5mm jack, and RCA) to all go through the switches on the front panel and the 10k logarithmic potentiometer for volume control. I've also grounded everything to a ground pin on the board, including the back and front aluminum panels.
The wiring is messy, but it works. It still gets a slight hum when the unit is powered on, and in Bluetooth mode, the potentiometer makes a wiping sound when moved rapidly back and forth.
Are there any suggestions or improvements I can make to this, aesthetically or otherwise ? I was also if there are better amp board options if anyone has any suggestions they'd be welcome.
Thanks for taking a look. I can provide more information if needed.
I've rewired the inputs (Bluetooth, 3.5mm jack, and RCA) to all go through the switches on the front panel and the 10k logarithmic potentiometer for volume control. I've also grounded everything to a ground pin on the board, including the back and front aluminum panels.
The wiring is messy, but it works. It still gets a slight hum when the unit is powered on, and in Bluetooth mode, the potentiometer makes a wiping sound when moved rapidly back and forth.
Are there any suggestions or improvements I can make to this, aesthetically or otherwise ? I was also if there are better amp board options if anyone has any suggestions they'd be welcome.
Thanks for taking a look. I can provide more information if needed.
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Looks nice as a final product. Has that old school look. Im no pro by any means but have built a few of these TPA3255's and about to build another with dual TPA3255 chips on the board. Only thing maybe heatshrink all tied connections, make sure all solder joints are solid and if ya can reroute wires neater. As for the hum, probably the bluetooth ausing the issues.