Very basic subwoofer question


I'm thinking of adding a sub to my two-channel system, which has a pair of KEF LS-50 speakers, on Sound Anchor stands. I'm generally quite happy with things as they are, except for occasionally feeling that I'd like a bit more on the bottom end. I'm not looking for chest-thumping, room-shaking bass, but instead want to hear what's not there now. Like Paul Chambers on "Kind of Blue," who sometimes feels more hinted at than present. Or Phil Lesh on "Friend of the Devil" -- or myriad other Dead tunes -- whose bass playing also isn't quite fully there.
What I want is to hear more rather than feeling it.
Is what I'm hoping for realistic? Attainable?
I could detail my system, etc., but I'm not looking for specific suggestions about which sub, how many subs, etc. I'm just hoping to hear from someone who might be able to tell me if what I want is possible, at all.
Thanks very much.
-- Howard

hodu
Four subs, of virtually any size, brand, model and power, will give you just the sort of seamless foundation you desire. Its really as easy as buying four, putting them different locations around the room, and adjusting the levels. Do it right and you will never even know they are there, until you notice all kinds of bass that was only hinted at before is suddenly clean and clear and full of character. You will also notice your midrange and treble are clearer, and the sound stage is more enveloping. You feel it is no longer just in front, you are in it.

Its called a Distributed Bass Array. It can be any combination of subs. Do a search. Study the system https://systems.audiogon.com/systems/8367 Read the reviews. Its totally the way to go. 
Bass is/can be directional. Someone here mentioned, it’s the fundamental AND the overtones that give bass directionality

For music, I am a fan of a pair of mains, no ports, and a pair of self-powered subs, located with the mains for stereo bass.

For video, a single self powered sub can be enough.