Audio Note model E have a huge soundstage even when they are in the corners of the room
worth a listen
worth a listen
Soundstage is a function of the acoustical interaction between the speakers' dispersion, room reflections and placement.
I have found that dipole or omnidirectional speakers provide the biggest soundstage. Front wall to speaker distance affects the depthminimum 3 feet, preferably around 4-5 feet. Pulling your speakers out from the front wall also increases the ratio of direct to reflected sound, a secondary benefit.
IME, a speaker's dispersion pattern and cabinet design seem to dictate the character of the soundstage more than any other factors. Certainly not 100% of the story, but a BIG part of it. Mini monitors and planars both have their particular staging strengths, but IMHO, omnis tend to produce the biggest picture of all.
In my experience, most dipole speakers do an excellent job with soundstage. I've heard great examples with planar, electostatic and open baffle designs. This is a fundamental strength of most boxless designs. On the flip side these type of speakers (in general) have a harder time with bass and microdynamics. There is no perfect speaker. Pick your sound priority and find the speaker design that optimizes accordingly.
Speakers that image well and flourish in a large room will have the biggest sound stage because the room is bigger mostly.
OHM Walsh speakers typically image from wall to wall in any size room. The larger the room, the wider the soundstage.
mbls perform similarly and have the deepest and most 3-d soundstage I have heard when set up right in a large room with lots of room behind them.
I've heard Maggies set up optimally in a mid-room configuration create a room filling soundstage. Other planars set up similarly probably do the same.
I've also heard a stereo pair Martin Logan and Focal speakers set up near the front wall holographically fill a large acoustically lively rectangular room quite holographically with much of the sound seemingly coming from the rear of the room
I've also heard Dynaudio monitors set up wide and mid room along the long dimension of the room fill the most of the room with an an accurately defined soundstage from wall to wall.
I just auditioned the Gallo 3.5s, which were remarkable on soundstaging and imaging, especially considering their small size (the pictures somehow make them look bigger than they appear in person).
The list at 6k, and it's a bit early to find them used, but it might be worth considering the 3.1s, which could easily be had at your pricepoint (well below, actually).
Sensitivity might be an issue, but I think some people around here are pleased with the results with Gallo's and lower power gear.
Omega Super 6 XRS Alnico or the Super 8 XRS Alnico. I had a pair of the XRS 8's for a year and loved the sound stage they threw. Room placement is very easy for the XRS line, and they sound great!!! I unfortunatly had to sell my XRS 8's due to the bad economy. Call Louis he is a great guy and his speakers come with a 30 day return policy.
I agree with the Philojet, Audio Note speakers are wide disperson designs and are noted for their wide soundstage.
Due to their design, Ohm Walsh speakers provide a very wide soundstage due to unique design. If they are placed properly there is essentially no sweet spot in the room; you can move about and enjoy the music.
As stated above, dipoles can also provide a very wide soundstage but are more tricky and/or problematic to position properly for the best sound.
One point to note that in addition to room size, the placement of the speakers in the room is another big factor that impacts soundstage. Most good speakers are capable of big soundstage I have found IF matched to the room and set up well.
What varies more from speaker to speaker I find is how well or how realistically the speaker places things within that soundstage. BEtter speakers are able to do this better in general. Also, a larger soundstage makes it easier for the listener's ears to triangulate and determine differences in location of the musical elements that occur within the soundstage and together form the music and also to detect subtle nuances captured in the recording.
A large well defined soundstage with good imaging is like watching an HD movie on large format TV and provides the best playing field availble in the home for having a shot at reproducing and our ears detecting everything the recording has to offer.