My TPA3116 mods
I finally got around to upgrade the components of my B/B TPA3116.
I replaced all of the components for high quality ones, including the connectors. Only the resistors and SMD components were kept in place.
Components used:
- Input coupling caps: WIMA MKP10 2.2uF, MKS2 for the small ones
- Power caps: Panasonic OSCON 330uF
- Bootstrap caps: TDK 220nF X7R
- Inductors: Bourne toroid 10uH
- Output filter: WIMA MKS & FKP
- Connectors: Phoenix contacts
Additionally, I lowered the gain setting to 20dB.
The upgrade went pretty smoothly. Desoldering the inductors took some careful wedging between the inductors and the board contacts with a semi-flatheaded soldering tip along with desolder braid. Also the removal of some surrounding components was needed in order to reach in there with the solder iron. That's when I decided to just replace all of the components while I was at it. Also, the stock components are of the really cheap kind.
The 2.2uF MKP10 caps took some leg-bending because its feet are further apart than the holes on the board are. The legs are also quite short, but after some careful bending, all legs will fit nicely through the holes. The additional capacitance should result in better bass extension.
The Bourne inductors are pretty large, at first I wondered how to fit them but after some puzzling they actually fit quite nicely without them touching eachother.
I just hooked it up about 30 minutes ago so the caps probably need some burning it, but I will say that it sounds excellent already!