I owned a pair of Signature SEs for a few years. I thought they would be my end game speaker. I was particularly impressed with their air motion tweeter and ability to be placed close to the wall due to their sealed enclosure. Over time they seemed to be missing something. For large speakers with two big woofers they seemed to be lacking in bass. Also the lower mid-range seemed to have a hole in it. I experimented with placement but they sounded the same. I was driving them with a 400 watt McIntosh amp.
One day after owning them for 3 years or so, I pulled out my old Green Mountain Chromas from storage. These are stand mounted monitors
Much, much better in every respect but the tweeter. I sold the Signature SEs. Eventually I bought Kef Reference 1s and used the Chromas in another system. I wondered what I was thinking when I bought them. I wanted to like them