I’ve seen very little discussed on this specific topic, but welcome your thoughts. Also, if the listening chair placement is first, how do you go about it? Thanks.
No doubt. It is an optimization that we all know is completed in 1/4” moves.Listening seat might be first, but in reality it's both. Once you've dialed in the speakers you may discover that some adjustment of listening seat position may still be beneficial.
Both where your speakers are and where you are will affect reflections and modes in the room. So the somewhat complicated answer is that you need to find the best combination of the both speaker placement and listening position (within what's realistic in your room).
Generally it's beneficial if you can keep your listening position some distance away from any walls. The speakers could be close to or further from the walls depending on the room and your speakers.
Contrary to what may intuitively make sense, placing yourself asymmetrically in the room may be a good thing (so your listening position is not of equal distance to both side walls).
Totally agree with you here Lagonda! You do the initial speaker and chair setup with the normal parameters, then you will have to do small changes to both the speakers and chair to optimize everything - there is no other way. A good thing though is to take a few breaks once in a while (few days or weeks) to let the ears realax (so to speak) as it is very easy to get ”sound blind” while in the middle of all adjustments. Most important here is to know that the sound don’t just come over night. It takes time and effort to dial in and optimize a speaker / chair placement. Usually, with ever so small adjustments, -the big full sound will reveal it self over time.I have always done speakers first, then chair and ended up moving both a lot before i was happy. My main speakers have been omnies and dipoles for many years, they need a certain distance to front wall to function optimally. Having 4 towers and considerable adjustability in both active and passive crossovers are both a blessing and a curse.