Sound quality vs. volume

3 wheels (move carefully) because they always self level themselves

Nice looking speakers. I think your rear ports primarily, and speaker placement perhaps, combine to create your problem.

Ports are simply to get some extended bass out of a smaller enclosure, not a lot, just a bit more audible extension. Let's the manufacturers publish lower bass response. Demo rooms produce too much bass, but, a brief listen is impressive.

Ports are very room reactive, potential for problems should be considered larger than any potential improvement.

My speakers are very large, internal volume 6 cubic feet, with horns and 15" woofers, very efficient, need very little power to rattle the neighborhood.

Mucho bass, but when younger, I just had to try to port the 15" woofers to get more than anyone else had ever heard from them. Been there, done that, learned from it. I have my rear ports closed now in this room. I used them open in the prior location. Never needed to begin with, but satisfied the itch.

Ports open, closed, knowing what I know now, especially now that good subs exist, I would not buy a ported speaker. Get the best imaging out of the primaries, and if you must, add a sub, play with it's placement. I have a sub in my home theater, and a sub in my office. I get just a little bit, now really aware until you turn them off, that's the way it is supposed to be, same with surround speakers, not too obvious, but, off, the sound 'collapses' into the front.

What I would try:

They need to be away from the corners, but, not equally, say 3 feet from rear wall, only 2, or 4 (not 3) feet from rear wall. An asymmetric corner behind them,

Start farther apart, then toe them in more than you think. left speaker directly facing center listening chair, thus angled quite away from side walls. which is why you can start closer to the side wall than now. same for right. This will give you a very nice wide center effect, as left of center faces right speaker more directly, but is physically closer to left speaker, (opposite side similar) like the DBX do for home theater wide center. 3 people wide can get very nice imaging using this technique. Center is perfect of course, best depth.

Next, you need to angle them up some, so that the bass is not exiting 'flat' to the floor ceiling, and the rear wall. This usually aims the tweeter up, often directed at seated ear height which is best.

Now bass is not too close to rear wall, and angled away from the side walls, and approaches the floor and ceiling differently approaching you, and the floor, ceiling, rear wall will all interact differently.

Cost: Zero. Room Decor: wife stays happy.

A final attempt would be to stuff one or both ports. You could stuff both on left speaker only, move around, learn something, keep messing about. You could close all 4 ports, happily listen, if not enough bass after a period of time, start the search for a sub, and don't try to get too much out of it.

good luck, let us know if any of this works please,

Elliott

oh yeah, I put 3 wheels under mine, and push them into the corners for more space in the rooom when not listening, roll them out some for listening, and roll them out to ideal location for extended focused listening. If it is not easy to re-position speakers, unless a dedicated space, you are stuck with a compromise location usually.

Let me say this about that.

Once anyone gets a very satisfying balanced system and speaker/room setup, most often you will find you very rarely listen as loudly as you used to. You are busy being immersed, involved, hearing things previously undiscovered.

Once a level of involvement is achieved, it is time to move to superior content, broaden your interests/experiences, move into phono if not there, move into Reel to Reel if not there, ... all of which enrich the experience far beyond tweaks.