I can prove your room is bad

I love my GIK panels! Bass absorption behind each speaker, diffusion at first reflection and three 2’ square diffusion panels on the back wall behind the listening position. All are 4” thick.

I'm going to throw this discussion back at you, @audiokinesis ...


My original point was to help audiophiles figure out if the direct speaker signal was making it well enough to their seat, without tools. Your question is, literally and figuratively, orthogonal to my own. ;-)


Lets say there is a speaker with good forward and poor off-axis response.  How do you suggest an audiophile discover this with no tools but their ears?

@erik_squires asked:

" Lets say there is a speaker with good forward and poor off-axis response. How do you suggest an audiophile discover this with no tools but their ears?"

Excellent question!

First, make your best estimate of what frequency region has a problem.

Second, look at the drivers and crossover points to see if there seems to be a correspondence with the problematic frequency region(s). Typically a direct-radiating speaker has extra-wide response at the bottom end of a driver’s frequency range (like at the bottom end of the tweeter’s range), and relatively narrow response at the top end of a driver’s range (like at the top end of the midwoofer’s range, and again at the top end of a dome tweeter’s range). Given that frequency response peaks are more likely to be audible (and objectionable) than frequency response dips, audible off-axis anomalies are most likely to be associated with the bottom end of a driver’s range.

Third, do YOUR suggested test to see if the "predicted" off-axis anomaly disappears in the nearfield.

This isn’t ironclad proof of course, but imo it can add up to an "educated guess".

Finally, here is a way to test the room independent of the speakers: With no music playing, walk from room to room in your house, speaking out loud and listening to the timbre of your voice. It is best to do this when nobody else is around; people tend to get the wrong idea. The other rooms are to give you some baselines; pay particular attention to the timbral quality of your voice in your listening room. IF you hear a timbral skewing which corresponds to the anomaly you hear when your speakers are playing, then the room is at least PART of the problem and may well be the ENTIRE problem. But if your voice sounds good and natural in your listening room, that points to the speakers (or sometimes something else in the signal chain) as the primary culprit.

Duke

There are other alternatives to treating your room with panels traps and wotnots.

Lyngdorf room perfect DSP is very good at dealing with the room acoustics allowing much more practical and WAF speaker placement in you don’t have the luxury of a dedicated listening room like me. 

So can unplugged subwoofers screw up the sound. Thanks to a fellow-phile on AA, who responded to my thread there where I stated that I was no longer using my 2 SVS subs (the tall ones), which are in the system picture that I provided.


He said unpowered subs, being used or not, will negatively affect the SQ. Late yesterday I removed them and was shocked. Where the SQ was on the thick side, post subs it dances like a butterfly

hth