chakija Messages: 14 Registered: October 2011 Location: Serbia
Chancellor
I finally managed to "complete" boxes for my 3pi clone.
I must say that results are very very satisfying
For now I feel like I don`t need to adjust anything in crossover. Sonido woofers are really superb performers. Bass is very well defined, and goes low enough. They blend with B&C250 perfectly with your 3pi crossover. They show absolutely no sign of cone breakup and sound very linear and smooth.
I used a little program called "Box notes" that helped me to determine right proportions for box. BR pipe is made of 3 peaces of 20mm birch plywood as you explained in plans for 3pi.
Woofer is offset 10mm from vertical axis because of side standing waves. I believe that this is not audible, but it is not bothering me aesthetically so i decided to give it a try.
Final outer dimensions for boxes are 870x540x380mm.
Note my pink high-end stands. They are ofc temporary, but in this sloped position I have best results. Back side of box is resting on some 3mm rubber pads.
I tried to put them on some 150mm stands but got much worse bass response.
For now here are some final pictures of boxes. I hope that I will menage to put some pictures from building process.
I am really enjoying the sound of this great loudspeakers.
I want to thank you Wayne for all your generous contribution for DiY community!