Speakers that disappear

When you speak of listening to speakers that disappeared and were stand mounted, you were most likely listening to the Bose 901s, which sit on a pedestal as an integral part of their design. To me, none of the other Bose products come close, but the 901s via their equalizers can put out a nice sound, and they certainly disappear without needing a lot of additional equipment to achieve the objective. Many can find fault with them, but that's what you were most likely listening to.

Bose comes to mind, but only if there's at least one Synergistic Research fuse in the system.

No highs no lows, must be Bose.  

I am pretty sure that there are stand mounted speakers that do a better job at the disappearing act than Bose 901s.  (And I had never heard Bose 901s referred to as "stand mounted" before, but who knows.)

Anthony Gallo ref 3.1 or 3.5s or their current stand mounts Strada II. I obviously a fan boy for Gallo. The cdt tweeters are among my favorites in all the speakers I’ve ever heard. 
 

I’ve also been drawn to most open baffle designs for the disappearance act. Depending on budget, Nola makes some really special sounding speakers. All disappear without much fuss.

My Magnepan LRS+ does a pretty good job disappearing even though I sit close to the LEFT speaker in my small office. However, I cheat by using ROON's digital speaker placement option. That thing is like an analog balance control in a preamp, but on steroids.

The best speaker that I know to totally disappear and also have an incredible soundstage is the KEF Blade 2.