Guess How Big My Speakers Are


If you read any of my threads on here or looked at my virtual system you probably already know the answer to this question, but for those who have not, try this as a thought exercise. Given this plot alone how big a speaker do you think this is?

Frequency response plot showint extension to 20 Hz

 

Hints:

  • 2’ from sides, 1.5’ from rear
  • Ported
  • Not horns
  • No EQ applied. This is the natural in room response using short sine sweeps.
  • For a living room this is a well treated room with GIK soffit traps, bass traps and diffusion panels strategically placed.

I’ll reveal my answer if we get 5 guesses or more. :)

erik_squires

At some point over the holidays I'll take measurements at different volumes, I am pretty sure that we won't be able to maintain the bass output, so it will be fun to see how it cuts out as the power goes up.

@erik_squires , different mike places and volumes would be interesting in themselves, but the averages would be an education. ;)

Have a pleasant Xmas.

 

it is impossible that you are actually getting as much output at 20Hz as you are in the midband.

@herman In an anechoic room you’d be correct. The room however bedevils those expectations, and that’s the point of the posting. 

I'm going to stick with my initial response. I don't care what kind of room you are in, .. you are not  really getting a strong 20 Hz out of those speakers