Following from a recent thread regarding a poster wanting to be able hava a system that could replay double bess low notes I did a wee test with an app on my phone (humour me please, I know hardly high tech) but it would be interesting to see what others enjoy with their systems
Here is a mine. This is a recent play around with a phone app to get the best FR from seating position. I used it to methodically move the speakers to get the flattest. Worked a treat and sound great to me. Here is a picture, and one of the setup and whole room for good measure.