Which is better for a DBA (Swarm); powered subs or unpowered?

Two questions:
Wasn't Dr. Floyd Toole adamant regarding cables lack of any measurable difference hence no sonic effect in the audio chain? Am I misstating this?

Did Earl Geddes design for Behringer (processor) or simply use their processor? 

@m-db asked: "Wasn’t Dr. Floyd Toole adamant regarding cables lack of any measurable difference hence no sonic effect in the audio chain?"

I vaguely recall something like that. (My own experience with cables, which includes conducting a blind listening test, is otherwise.)

But imo it would be a mistake to dismiss Toole’s expertise in loudspeakers, acoustics, and psychoacoustics over a disagreement with him about cables.

@m-db: "Did Earl Geddes design for Behringer (processor) or simply use their processor?"

He simply used their processor. 

My understanding is that the concept came long before any of the specific pieces of the puzzle. 

Duke

Toole is one of my favorites. He was awesome in Lawrence of Arabia. 

So, I am the new Swarm(er) noble100 mentioned.

3 ceiling facing subs (3 inches from ceiling) and one on the floor.
10’ x 14’ room with minimal acoustic treatments.

So far, outstanding improvements with Magnepan LRS and Ologe 5 speakers.

Switched over to KEF LS 50s non wireless last night and have been listening to them all day today.

Makes the somewhat diminutive LS 50s sound like true floor standing monitors. As with the other speakers, my listening room seems (sounds?) bigger.

Like they say, "Seeing is believing". So is hearing and listening!

Want to believe it?
Go listen to a system with a properly set up Swarm.
Then listen to that system without using the Swarm.

There's just no going back.