Ultrasonic volume - the definitive answer

[Shannon]

I think the S4 plays in stereo?

It may well do - but on a nightstand, all audio would effectively be coming from one side (i.e. basically no real channel separation so mono)

I don't have a speaker system or stereo in my home. I have my laptop, which stays at the office as an incentive to come to the office and work, and I have my TV and my phone.

I'm not putting my TV in my bedroom, and I'm not sleeping in the living room. So I use my phone.

It does not have stereo audio, but it works well enough, and since I am using the same sub for years at a time, I'm not particularly worried about it.

I use the volumes I do because those are the volumes that produce the best results while I am testing with others at some distance. Therefore, when my phone is at the distance I usually would be from a tester, and it is playing at that volume at the source, I am getting slightly less volume and it's perfect.

I measure the sound using the phone mike, while producing it using the phone speaker.