I hope that I understand your question. If so, there will be many opinions out there, but since you asked......
I believe that it is best to scheive the flatest overall response with a minimum of distortion. Different areas of the room will have different peaks and valleys, so you may have to decide to optimize the response for one or two seats. It is worthwhile to try for +/- 5 dB across the spectrum, but it is difficult to acheive, even with equalizers and room treatments. I would not try to push the sub any lower than it can safely go without distortion (-3 dB). A good sound meter can help plot out your room (tedious) or you can pay for the service. Getting a sub to sound right is difficult and maddening. So much trial and error, but hopefully you will know when its right and actually have some fun trying! Good luck!
I believe that it is best to scheive the flatest overall response with a minimum of distortion. Different areas of the room will have different peaks and valleys, so you may have to decide to optimize the response for one or two seats. It is worthwhile to try for +/- 5 dB across the spectrum, but it is difficult to acheive, even with equalizers and room treatments. I would not try to push the sub any lower than it can safely go without distortion (-3 dB). A good sound meter can help plot out your room (tedious) or you can pay for the service. Getting a sub to sound right is difficult and maddening. So much trial and error, but hopefully you will know when its right and actually have some fun trying! Good luck!