Overall, I like what Microstrip has to say about Wilson speaker placement. I certainly wouldn't listen to the folks saying you are wasting your money on an M7 or XVX. They begin with the false assumption that Wilson speakers are difficult to place in the room.
Now my room is a full 40 feet long and is built like a tank, extremely sturdy without going into it. For placement of my XVX I wanted my tweeters 108 inches apart. My room is exactly 15.5' wide sidewall to side wall. If you look at the tops of my XVX, you will see this places them about 2-3 inches from the ceiling. For my room one might think the height was the limiting factor. Not so. It is the width and the XVX is quite narrow for a speaker its size. My room will not tolerate a wide speaker. The width of an XVX is only 16.5", which is amazing for a speaker of its size and weight. This works out to absolutely perfect placement regarding width.
Next is the sitting distance from the speaker. I want the tweeters aimed exactly at my ears for on axis listening. Not at my face but my ears. If you look at my pics you will see this satisfies the Wilson criteria of just being able to see the inside walls of the woofer bins. My sitting distance is roughly 11' from the base just as Wilson recommends, a nice isosceles triangle as suggested by Wilson.
The dimensions of this triangle have remained constant with my Alexx and my Maxx3, because it was not feasible to situate them any closer to the side walls, even though with their lesser height, a wider tweeter distance would have been possible. One of the keys to my requirements of buying my XVX was that I could obtain a tweeter distance of 108" or nine feet, and I did, so I bought the speaker. Wilson had to make custom acoustic diodes for my XVX, which gave me an additional inch of height to obtain this distance easily.
The placement in the room and port (front or back) wasn't difficult. After satisfying the zone of neutrality, I wanted the most possible bass. I had already observed from my Alexx that I preferred the rear port and so it was used for my XVX. The black dot just above the carpet was the estimated placement of the XVX at time of installation. That's where we began, and you can see where we ended up. My placement is where I have the very best bass room frequency response. It just happens to provide an excellent treble and midrange also. I have the rear tweeter set to minus 3 dB.
One of the tremendous strengths of Wilson speakers is they are designed for on axis listening. The tweeters must be aimed at the ears to achieve the best results. I never listen with the rear door closed and it is a full 40 feet away. I have an extremely smooth bass response, exactly what I want, and I have zero slap echo. My room is on the dead side. It is not a live room. It will absorb a lot of sound. I do not like live rooms. For many other speakers, on axis listening doesn't work very well, IMO.
I have heard many speakers. After you listen to a speaker for a while, all its problems become apparent, whether it is because of placement or the speaker itself and you want more. I experienced this with my Maxx3 and Alexx to a much lesser degree, both of which were extremely fine speakers. I was satisfied with my Alexx but when I saw the XVX, I knew I had to own it. I can't explain why. I don't experience this phenomenon with my current system or XVX. It's simply the best sound I have heard. It 100% satisfies my ears. I can play the system as loud as I like. 35 watts is usually plenty, but I have 350 watts if I want it and sometimes, I do.
As I have said, it all begins with power and wires. MY new incoming Rose 130RS retails for 5,200.00 dollars. The AQ Dragon 2-meter solid silver power cord alone retails for 7,900.00 dollars and it will be plugged into its own transformer isolated outlet of my Niagara 7000 that uses a 1-meter Dragon HC into its dedicated 20-amp line no.10 wire directly into the fuse box. As you know the power cord coming from the wall into the power conditioner is the most important one and should be short, no more than 1-meter if possible.
I hope that folks reading this thread will give Wilson speakers a try. I do not believe they are difficult to place. There is no such thing as a "perfect" speaker placement. I believe that I have achieved an excellent placement, not perfect. It goes without saying that the individual modules must be correctly aligned for any Wilson speaker. It's not difficult and I thoroughly checked my dealer's chronometer alignments. My chronometer is aligned to my satisfaction.
C
Charles Updated System: Wilson McIntosh Audioquest
Gear on Order: Hi Fi Rose 130RS Network Transport; Samsung internal SSD; Audioquest Wel Signature digital balanced 1-meter IC; Audioquest Diamond 1.5 meter USB cable; Audioquest Dragon 2-meter source power cord; HDMI cable 24’ for music videos
Amps: McIntosh: MC3500MKII (2); MC1.25KW (2); MC2.1KW An
Preamp: C-12000 An
Sources: MCD12000 An; MVP881; MVP851; MR87; Marantz 510LV; Lenovo Yoga laptop
Speakers: Wilson Chronosonic XVX
Sub-Woofer: Wilson Thor’s Hammer; Wilson ActivXO Stereo Electronic Crossover
Cables Main System AQ: WEL Signature speaker cables; 24’ balanced IC; balanced 1-meter Dragon IC ; WEL Signature digital, Coffee digital coaxial cables; Diamond optical (2); Diamond USB; Dragon (5 HC, 3 source cords); Thunder & Monsoon power cords
Cables Subwoofer System AQ: Redwood speaker cable; Wolf balanced subwoofer IC; Wind balanced IC to ActivXO; Hurricane HC; Firebird HC; Firebird Source; Dragon HC, power cords
Power Conditioners: AQ Niagara 7000; Niagara 5000 (3); (4) dedicated 20-amp lines.
Isolation: Wilson Pedestals; Bassocontinuo McIntosh Ultra Feet; X-material plinth
Cabinet: Double Custom Woodwork & Design (CWD)
Acoustic Treatments: Room and Echo Tunes