The NHT Classic 3 are acoustic suspension speakers. This design of speaker operates well in near rear wall placement. Period. I am not sure if absolute flush placement is physically possible. My hunch is that clearance needed for speaker cable, especially if you are using banana plugs, may bring you a few inches from the rear wall. With all that said, I used NHT SB2s in this manner with a Prima Luna PL2 amp and Rega Apollo CD player and really enjoyed the sound.
Like you, when I was looking for special placement speakers,I tried to get information about North Creek (near rear wall) and Salk (on sides) speakers and it was frustrating to say the least. Non intuitive web-sites talking about kits or models costing $2K plus, but no product lists or order forms. Emails were not returned.
I ultimately purchased the Ascend Acoustic Sierra 1 Monitors after conversations with AA that Sierras were designed to operate either in regular standing position or on their sides, which was a need on my part. I have them about 10 inches from the rear wall on top of a bookcase and they are stellar.
The Regas were real surprises. Inside a closed back bookcase, placed on their sides, and they were fantastic. Should not have given them away.
Good luck with the Classic 3s.
Rich
Like you, when I was looking for special placement speakers,I tried to get information about North Creek (near rear wall) and Salk (on sides) speakers and it was frustrating to say the least. Non intuitive web-sites talking about kits or models costing $2K plus, but no product lists or order forms. Emails were not returned.
I ultimately purchased the Ascend Acoustic Sierra 1 Monitors after conversations with AA that Sierras were designed to operate either in regular standing position or on their sides, which was a need on my part. I have them about 10 inches from the rear wall on top of a bookcase and they are stellar.
The Regas were real surprises. Inside a closed back bookcase, placed on their sides, and they were fantastic. Should not have given them away.
Good luck with the Classic 3s.
Rich