This is a design i made quite a while after my first one, and has many revisions had regarding speaker choice, so i'll document the lastest revision only.
It is a basic 2-way enclosure for TB W3-315 and Dayton DA175-8 speakers.
Crossed at about 2,6khz this combo provides quite a calm output, it relaxes my ears, not tiring to listen to at all, and very low distortion.
The specs are rated:
40-20000hz frequency range
88DB @ 1 watt, 1 meter
I used 12mm mdf for the enclosure, and the woofer has around 17L front vented enclosure tuned at ~40hz.
The tangband 3" fullrange has 2 liters closed to play in, i also applied 2 sheets of polyester filling for the dampening inside.
Compared to B&W DM603 S3 speakers i got for 125€ the FR71 towers sound too compressed though.
Thinking of giving these to someone i know. so this project is more or less the state: won't resume.