Aggessive 4-meter air column subwoofer

[Gabster]

Hi,

My goal is simple: I want to build a subwoofer that has an air column long enough so it reproduces frequencies as low as 20Hz perfectly.

(lamda = 343m/s / 20Hz / 4 = 4.3m)

I have already seen this is the pass and I want to know if someone has schematics for this.

regards,
Gabriel

 

[Westrock2000]

Couple Sonotubes and a vaulted a ceiling should do the trick.

How does this work?

 

[Nelson Pass]

This is a good description of the overdue El Pipe-O which
should be out in about a week. I'll post a notice.