You have a wonderful system, but based upon the photos, your speakers are ill suited to your room. Specifically, the wide dispersion tweeter of the Merlin are a problem. As pointed out by others above, it's bouncing sound off of every hard surface in your room (the glass doors, concrete walls, tile floor and coffee table). Due to the different reflective qualities of each surface the combined direct and reflected sounds won't cohere. This will be especially problematic with a high resolution design like the Merlins.
You could try various acoustic room treatments to try to eliminate, or at least lessen, the reflected sound and that could work very well if you're willing to convert your living space into an audio room with audio room aesthetics. The other possibility is to get a speaker that works with the room as opposed to fighting the room. My recommendation is that you consider something in the Audio Note line. Because they require corner placement they will load the room differently and I believe in your case more evenly. You'll still require acoustic treatments, but they can be larger limited to the corners containing the speakers. I'd also recommend getting a rug. The Audio Note line will also work well with your existing electronics. Please note that by design they are not studio monitors like the Merlins. They are more relaxed sounding.
You could try various acoustic room treatments to try to eliminate, or at least lessen, the reflected sound and that could work very well if you're willing to convert your living space into an audio room with audio room aesthetics. The other possibility is to get a speaker that works with the room as opposed to fighting the room. My recommendation is that you consider something in the Audio Note line. Because they require corner placement they will load the room differently and I believe in your case more evenly. You'll still require acoustic treatments, but they can be larger limited to the corners containing the speakers. I'd also recommend getting a rug. The Audio Note line will also work well with your existing electronics. Please note that by design they are not studio monitors like the Merlins. They are more relaxed sounding.