Double Bass Array (DBA)

[Flaesh]

Does the listening position close to the rear play into the attenuation calculation?

You need some distance from the back (and front)) array to the listening position.
From https://www.audiosciencereview.com/...e-bass-array-configuration.37943/post-1504242

 

[Deleted member 58670]

Does the listening position close to the rear play into the attenuation calculation?

No, moving the listening position will not affect how much you need to attenuate the rear array. This has more to do with how lossy the entire room I guess.

 

[landco]

Sure. It looks like ***, but sounds very nice!

Front end - including MG 3.7 with 4x12" midbass dipoles, MG 3.6 center channel with two 4x10" midbass dipoles. The whole thing is usually hidden behind drapes and a projection screen, so it's a bit less ugly than this (see pic #2).

View attachment 346991


View attachment 346992

Rear end, also showing the surround speakers - MG 3.6 plus 4x12" midbass dipoles - and hush-box for my projector. The large stack of firewood is actually "skyline" diffusors.

View attachment 346989

Very funny photo with 12 subwoofers. Increasing sales x12 is a blue dream of any salesman )

As for the practical benefit in a typical small living room, this seems doubtful to me. The main argument of the DBA supporters - eliminating resonances in a wide listening area - has no practical value, since as a rule the listener does not move around the room while watching movies, but sits in a certain place

 

[Keith_W]

What happened to StigErik?

 

[neRok]

The main argument of the DBA supporters - eliminating resonances in a wide listening area - has no practical value, since as a rule the listener does not move around the room while watching movies, but sits in a certain place

It's not about improving a "wide area", it's about the elimination of the resonances, which is equivalent to improved bass decay. This fixes the peaks and nulls that are a result of room modes.

The need to have a symmetrical array on the ends-walls is so that the side-wall and ceiling/floor reflections cancel each other "automatically".

So putting these 2 things together - the front array forms a "plane wave" that moves towards the rear wall, and when it gets there the rear array makes an opposite plane wave to cancel the other wave.

 

[Flaesh]

What happened to StigErik?

Hmm. I don't know.
By the way, with 12+12 subwoofers I expected better results from 60 Hz and above. Just now I noticed the measurements without equalization in post #7 https://www.audiosciencereview.com/forum/index.php?threads/double-bass-array-dba.51919/post-1871074.