group delay

Hello, I have moved my system to the longwall + 15inch Subwoofer and found out that major issues in the bass region have been solved. To get some perspective here is my old thread. In this new setup, I am trying to figure out measurements such as excess group delay (GD) and minimum phase...

This have the best stereo width and depth of field from all speakers i hear. Seem because the group delay have few diffrences. there is a gap at 10 khz when it is around 15 degreee offaxis hear it get more. the group delay i have measure at 8 cm distance because only below 12 cm it give correct...

Er, actually, this thread should probably be in the psychoacoustics area. Can a mod move it? Introduction and observation: Following the fairly well received post on the relationship between group delay and spatial effects in headphones, I thought I'd start a new thread on the matter, gathering...