low bass response

so, "hear" is a question I dont understand....I do understand that low frequency waves require space, but what I dont understand  is what is invovled in hearing and measuring them....for instance, if you put on a 20hz test tone, and put the db meter close to the woofers, should you be able to measure there, or only at certain distnaces?

Your speakers are not the problem, your room and it’s contents are IMO. If you like  nearfield listening, try moving your speakers on the long wall, way away from that large cabinet. You will be able to move the speakers out from the wall and you can move your listening chair as close as you want to the speakers. 
If you read Jim Smiths book on audio setups, he states not to put anything between your speakers, which include more transparent racks compared to your massive cabinet

You want in room frequency response.  Measure at the listening position and at various other places in the room.  You can use 1 meter directly in front of the woofer as a baseline measurement.

The big furniture probably does not effect bass response, but it definitely impairs soundstage info.  Though it does look nice!

thx, again... the basic configuration CANNOT be changed...the cabinet contains all my equipment, except amp, speakers, and shunyata, and 1000+ LPs.....despite what is the "gospel" about things inbetween speakers, my system has wonderful soundstage, including depth....

my question about measuring bass maybe needs to be clearer....of course, the response at listening position is . in the end, what is important, what i wish to understand is . if one plays a 20 Hz test tone and places the db meter just in front of the woofers, should one get a reading, or does one need to be quite a bit further away to get any reading at all?  I guess I am hungup on the "length of such a wave, and where, in relation to such a wave, does one hear, or in this case, feel it?

@jw944ts , if you were to measure your situation, at the listening position you are probably rolling off below 60 Hz. Very few speakers can project bass well below 80 Hz particularly low frequency dynamic impulses. The frequency response quoted by manufacturers is very misleading. You do not sit one meter from your speakers and bass rolls off fast with distance. I use four 12" subs and it still is not enough. I am going to go to eight 12" drivers. In your situation two 12" subwoofers would be the minimum. If used correctly your system will become cleaner at volume and go a lot louder. The two hardest issues to deal with  in HiFi reproduction are bass and imaging. With bass it is important to focus on what you feel, not what you hear. On the bright side it is much easier to remember what you feel than what anything sounds like. I use small jazz venues for comparison.