Hi @JeffEggie, welcome to the Sonos Community!
I’m sorry to hear that you’re having volume issues with your system. While it is true that we’re using volume normalisation now with Spotify tracks when using Spotify Connect, having your system volume at 84 and just hearing ‘faint sound’ wouldn’t be the result of that. Plus, you also have faint audio with Napster which, to my knowledge, hasn’t had any changes.
If you’ve checked that a volume limit hasn’t been placed on your speakers like @Mr. T suggested, then I would recommend submitting a diagnostics (recording a video if you can) and reaching out to our support team. They have the necessary tools available to look into your system and help you troubleshoot this issue.
I hope this helps!