DIY sub to complement my 3 way DIY

[diyaudio]

My tiny 2.1 (another DIY project) with a 3.5" subwoofer on my desktop makes this type of music express itself so well.

This is because you were listening to the system nearfield. It takes the room out of the equation. If you want that same performance then you will have to do it with proper sub setup and in room equalization.