My my biggest challenge with the 2C’s is getting them to ’disappear’ as well as you can the 1C’s. That is important to me. Do they? Well no, not as easy as the 1C’s in my space, but after much fussing with placement, they are pretty close (source depending, some are easier than other per how the recording was mic’d/mixed). The one thing that made a tremendous difference was both some simple absorption and diffusion panels strategically placed. Actually diffusion works better in some locations to help break-up the sound waves vs absorbing them, creating a much better and wider soundstage which help to ’hide’ the 2Ce’s.
I have no real problem with overloading my room with the acoustic couplers, but as said and again, placement and acoustical treatment help. But, an interesting solution using one of Richards high pass filters. Heck, I also have two powered subs hooked-up in stereo that sit behind and adjacent to my 2Ce’s and adjusted for music, (with absorption panels that surround two sides of them so as not to allow too much pressure to build-up), not HT, so there ya go ;-)
I have no real problem with overloading my room with the acoustic couplers, but as said and again, placement and acoustical treatment help. But, an interesting solution using one of Richards high pass filters. Heck, I also have two powered subs hooked-up in stereo that sit behind and adjacent to my 2Ce’s and adjusted for music, (with absorption panels that surround two sides of them so as not to allow too much pressure to build-up), not HT, so there ya go ;-)