OF v3

[London1]

14 days done. 
Nothing out of the ordinary noticed.

What variable do you recommend I change?
Same days on but two loops?
One loop but extra day on?
What about volume?

Remember im doing 5/15 us on earbuds.

@Shannon

I recommend you quit using earbuds and start using a speaker at 12/15 volume, change to 2 days on and 2 days off and 2 loops per day on.

 

Would phone speakers be ok?

That's what I use. 

Are all the newer samsung galaxies (s20, 21, note 10, 20 etc) capable of playing ultrasonic?
Do they have a minimum upper limit of 20khz?