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LM3875 Chip Amp 


For once not a headphone amplifier! The chip amp was built as a side project and as part of a stereo system in the living room that consists of wall mounted fullrange loudspeakers, a dipole subwoofer and the chipamp. I eventually decided to get some chinese boards (but sold using the Audiosector moniker...) to build the amplifier in non-inverted mode and in the minimalist approach of the "Father" of chip amps, Peter Daniel.






Building the amplifier was very straightforward... you just have to wire up the transformer, the rectifier board with minimal filtering and the amplifier boards. I put them in a custom made case with a smoked perspex front and used a self-assembled volume pot from one of the asians vendors that deliberately sticks out the front of the case as kind of a visual element. I also had the decal made for the top panel by some guy I found on Ebay.


Soundwise the amplifier does what it is supposed to do... to drive a pair of small wall-mounted fullrange speakers in our living room. It has assistance in a custom built dipole subwoofer with an 8" Dayton chassis and a plate amplifier to drive it. Working and sounding beautiful!




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