I forgot to respond to your only comment I understood thus far:
" you may well have standing waves as most rooms do, so need to test"
You are correct, most rooms do have bass standing waves
However, the whole point of a properly setup DBA is to eliminate the vast majority of bass standing waves in the room it is deployed in.
The DBA's main benefit and reason for being is its extraordinary ability to eliminate the vast majority of bass standing waves in any room.
This is why DBAs are such an excellent solution for providing top quality bass response in any system no matter one's room size or shape.and without the need for mics, room analyzing and correcting software, equalization, DSP equipment or room treatments.
The result is powerful, life-like, detailed, seamlessly integrated with the main speakers and seemingly effortless bass that is well dispersed throughout the entire room; not just at a designated sweet spot.
In my opinion, and I would think in the opinion of many, this describes the type of in-room bass response we are all in search of.
Do I have any bass standing waves in my room since installing my Audio Kinesis DEBRA DBA system? Maybe but so what?.
The sole instruments I have available to detect them are my ears and attached brain. I have spent what I consider a large amount of time walking and even crouching around my entire living room searching for the symptoms of bass standing waves: any spots at which bass sounds over/under emphasized and spots at which bass sounds nonexistent.
I'm as certain as I can be, lacking the necessary equipment for a complete room analysis, that there are no bass standing waves at any of my 6 seating positions in my room. Perhaps there's 1 or a few in my room but I'm not going to worry about it or them since they obviously have virtually no affect I can even remotely detect on bass performance in my entire room.
Thanks,
Tim