I picked up one of the TK2050 4x100W Dayton amp boards recently. http://www.parts-express.com/4x100w-...board--320-335
The 28V PS I ordered from China came today. http://hifimediy.com/index.php?route...&product_id=71 I ordered the PS March 21st and it cost $20 to ship. This PS comes from the factory set at 28V but has a trim adjustment you could bump up to 30V. It also has an small split Aux output that measures +/- 11V. I found the board I got differs from the board on the web site. The web picture show 2 output terminals labeled Negative and Positive Out. The board I got has 3 terminals labeled Negative Out, GND Out and Positive Out. The Negative Out output is tied to the Positive Out and both measure 28V relative to GND Out. There was no documentation with the PS so I had to figure out the output configuration as well as the power input terminals whose labels are obscured by the terminal block. I chose this PS because it has high efficiency and no fan.

This will take a while to put together since I still need to get the rest of the hardware together. I'll certainly be looking at the cases from another recent thread.
Ron
The 28V PS I ordered from China came today. http://hifimediy.com/index.php?route...&product_id=71 I ordered the PS March 21st and it cost $20 to ship. This PS comes from the factory set at 28V but has a trim adjustment you could bump up to 30V. It also has an small split Aux output that measures +/- 11V. I found the board I got differs from the board on the web site. The web picture show 2 output terminals labeled Negative and Positive Out. The board I got has 3 terminals labeled Negative Out, GND Out and Positive Out. The Negative Out output is tied to the Positive Out and both measure 28V relative to GND Out. There was no documentation with the PS so I had to figure out the output configuration as well as the power input terminals whose labels are obscured by the terminal block. I chose this PS because it has high efficiency and no fan.
This will take a while to put together since I still need to get the rest of the hardware together. I'll certainly be looking at the cases from another recent thread.
Ron
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