Found this little nugget on the following thread. So maybe the 3400 is not ideal for my room, due to the treatments.
https://www.avforums.com/threads/lyngdorf-discussion-thread.1580956/page-4
" This is why after spending 20 years or so learning about room design, we no longer recommend specialist acoustic design and treatment in the majority of rooms where Steinway Lyngdorf systems will be used.
If you read the threads where Steinway Lyngdorf systems are demonstrated at shows you will notice they are always in completely untreated rooms. Many other manufacturers spent a fortune building the best spaces to show off their systems at shows and still don’t get the same feedback as Steinway. See below. Compare the cost of the systems and the room designs and Steinway Lyngdorf systems are often a fraction of the price of the high end alternatives being show."
https://www.avforums.com/threads/lyngdorf-discussion-thread.1580956/page-4
" This is why after spending 20 years or so learning about room design, we no longer recommend specialist acoustic design and treatment in the majority of rooms where Steinway Lyngdorf systems will be used.
If you read the threads where Steinway Lyngdorf systems are demonstrated at shows you will notice they are always in completely untreated rooms. Many other manufacturers spent a fortune building the best spaces to show off their systems at shows and still don’t get the same feedback as Steinway. See below. Compare the cost of the systems and the room designs and Steinway Lyngdorf systems are often a fraction of the price of the high end alternatives being show."