"Bamboo V2" project. 3E Audio 260-2-29A Stéréo Rev. B (OPA1656) + PFC/LLC PSU. APx555 Measurements )

[UA8890]

Thank you for all your explanations and pictures. I might need some help for wiring latter.

These are old photos. I'm already using the amplifier every day. If you have any questions or need help, let me know. I'll be happy to help.

 

[UA8890]

Thank you for all your explanations and pictures. I might need some help for wiring latter.

It is very important to route the wires correctly. The signal wire should be kept as short as possible. It should also be kept as far away from high-current wires and 220-230 volt power supply wires as possible. Keep in mind that crossing wires at an angle is preferable to running them in parallel. This reduces their electromagnetic interaction with each other. I experimented with the placement of the power supply and amplifier modules. The result was perfect silence. During pauses, at full volume, if you put your ear to the tweeter, there is no noise or hiss. Absolutely quiet. It is impossible to determine whether the amplifier is on. I had one problem. When turning off the amplifier, one channel made a popping sound (like Amir's in the board review). The second channel did not make the popping sound. It was annoying. I got rid of the popping sound by installing a 220 volt relay. The relay opens and closes the Reset and GND pin contacts. (Thanks for the advice Toky!) The relay is installed parallel to the amplifier's power button. They're located on the 10-pin connector on the board. The relay isn't pictured yet, but the wires to it are visible.There's a lot of free space left in the case. There's also some space left on the rear panel. I'm also thinking about adding an input channel selector. Along with the XLR, I want to add RCA inputs. I'm considering this implementation.

 

[LEOPOLNORD]

This is at the installation stage. There's plenty of space left in the case. Both the board and the power supply don't require a fan at all. I removed it. It's not needed even at peak power. The temperature never rose above 30 degrees Celsius, even at high volume.

Hi, how to connect a push button like this to a Mean Well LOP 500-48V in this amp project ?
Thank you.