Thank you! Yeah not fun, I understand. You can use the Subconscious Limits Removal 2.0 without music on Patreon. You can also try the hearing loss recovery field.
Older audio fields have carrier tones where the fields are imbued on. I prefer to make sure that I hear them since the music is an overlay in this case, aside from its own benefits, although other people success otherwise. There are exceptions like Radiate Positivity, where I found it to be working as long as the volume is higher than 0. If you still get results from low volume, I say that you can go for it. On phone speakers, that is usually harder to achieve especially if the tones are in the low frequency range. You can try to play these on other speakers that can play them easily without cranking up the phone’s volume or putting your phone nearer your ears. I suggest to activate airplane mode and protect yourself from EMFs.
I also try to remain within 5’ of the audio field unless I use it with stronger speakers with higher volume.