Yes it is only a primitive Helmholtz phenomena resonator.... the key with the open pipes is the lenght relative to one another...
the Helmholtz resonators sets is the ancester of room correction....
My "organ" is more economical than the original "room lens" for me... i dont pretend it is better tough i have no idea....
By the way i already use 3 bigger tubular "plastic" pipes, 8 feet, 5 feet, 3 feet, with 3 inches and 5 inches diameter with success...My first version of the "roomlens"... These 3 tubes are closed at the aperture and a straw is used with a determined lenght and diameter....I have done this 46 hours ago....
On the other end my organ pipes are vented at the basis not glued to wood like the big tubes, and the top aperture is open...
i already created some Helmholtz bottles before that in my room, you have given to me the idea about tubes when answering people mocking "roomlens" with a your post... Thanks to you...
All my devices today act complementarily and my audio room is sonically very good now...
But i need more experiments with tubes and pipes....Fun for months to come .... Price: peanuts.....
I am very proud by the way to be in " the most silliest tweaks" thread and be mocked by some passive consumers and gullible "upgraders" of electronic costly design...
They ignore the elememtary fact that an electronic piece of gear CANNOT work optimally in giving an optimal S. Q. in a bad uncontrolled mechanical dimensions, in a bad and noisy electrical house grid and in a bad acoustical room like they almost are....