-More enjoayble sound stage

This is something that does not get mentioned often enough. Although, it is probably more related to classical music recorded in a concert hall, more than other types of music, at other venues, or a studio.

There is a lot of ambient information carried in low frequencies, that add imporatant spacial cues. A bigger, deeper, better defined sounstage is the result.

I finally bought my first sub. It's a REL T5x and I love it.

Finally Learned: Subs serve much larger role than adding more low bass

My GF commented on how the addition of the subs really helped out the tonal balance in the high end- how the system became more relaxed.

I've had two subs for about twenty years.  Relieving the main speaker othe main speakers of the bottom octaves has several bebefits.  Less excursion of the woofer, lowering distortion.  It also takes load off main speaker amp.  And of course better bass.  On a side note, I recently put springs under the subs.  This added detail, more body to the bass.  I also have much less booming bass in other areas of the house.  

Human hearing is designed to gather far more information from the environment than we are at present able to measure. It is no problem at all to know whether you are in a closet, car, living room or concert hall even with your eyes closed by hearing alone. 

Consequently, the more closely we recreate the sonic signature of the recording venue the more realistically it feels like we are there.   

This is the first thing that hits you with a DBA. I mean, unless you crank it up to where you notice the extra bass. That is too much. With levels properly set you will never know there are any subs at all. People have to be reminded about mine even though they are all around the room obvious as hell. They just don't seem to be doing anything.

But the effect is noticed even on recordings that seem to have no low bass. The speakers and room disappears, the sound stage expands, and there is a sense of envelopment. 

I went through this first when adding multiple subs. Then again to a lesser extent when putting the subs on springs. Then again to a much greater extent when putting the subs on Pods. Each time the bass did improve a bit but this was only noticeable with music with obvious bass. The improvement however goes far beyond this, extending well up into the midrange and also with the really wonderful feeling of envelopment, of being in the sound stage instead of merely looking at it.