Originally Posted by DMark1
Max: That's good to hear that 40 Hz works well with the Focus SEs and the Seaton Submersives. I am also looking at getting a pair of SubMersives soon to go with my Signature SEs.
When you say you can detect <80 Hz bass panning around the room, that's interesting. I've found that it tends to be the higher harmonics or other components of bass sounds that clue my ears into what direction it is coming from. For instance, even with a bassy kick drum, there is a higher frequency attack sound - a "click"-like sound that is a component of the overall drum sound, and that tells you where it is located more than the bass produced below 80 Hz. Did you use a pure sine wave test tone at 80 Hz or below during your tests? If you used movie clips, my guess is that other higher frequency sounds associated with the bass were giving you ears directional cues. Maybe you could try the same test with your main amp shut off and just the Subs playing?
What it feels like I'm detecting is the origin of the pressure wave.
I'll try to describe what I mean.
When I used the 40Hz XO with the Star Wars pod race scene, with my eyes closed, as the pods zoomed/rumbled by, the sound would pan through the speakers and there was a very realistic sensation of a large object going by. It's like standing by the road as a semi goes by. The low rumble zooming past produces audible and tactile cues that tell me something big just passed by.
With the 80Hz XO, I could now detect that the higher frequencies were still panning, but the low frequency rumble/pressure wave was coming from the right side of the room where the sub was.
I then turned the sub so I could see the amp's signal light on the Submersive and confirmed that the signal light would come on at the exact points I had detected the single direction low frequencies with the 80Hz XO. When I switched back to the 40Hz XO, I could once again feel the sounds pan across my speakers without the sensation that some sounds were panning while part of the sound stayed still and came only from one spot.
Interestingly, I noticed that when the signal light on the Submersive's amp came on with the 40Hz XO, I could not pinpoint these lower frequency sounds. When the SubM reproduces frequencies 40Hz and lower, it just feels like it pressurizes the room and is all around me (as opposed to low frequencies that don't trigger the SubM's signal light at the 40Hz XO). With the 80Hz XO though, I can localize some of the frequencies as coming from the sub, but those scenes that I noted as having 40Hz and lower content, I could localize some of the lower frequencies but not the lowest part which seemed to be all around me.
When I did the test, I used music along with the Star Wars scene. I put the scene on repeat as I toggled through the settings. I must have listened to that scene well over 30 times.
No, I never tried using just 80Hz and 40Hz test tones. I wanted to see what results real world content produced.
As I said, after this test, I realized I could localize subs and after becoming aware of it, I noticed it even in places I'd never been to before. I walked into a nightclub and immediately noticed that I was hearing the higher frequencies from my right side but the visceral thump came from my left. I then looked around to see where the subs were and didn't see them, so out of curiosity, I just headed where I felt the thump coming from and found them hidden behind a baffle wall under the stage.
I'm still not sure if the localization is from what I hear or what I feel.
MaxEdited by djbluemax1 - 8/10/12 at 1:03pm