Hi WJC,
Thanks for posting in the Community! Sorry to hear about the troubles, but would be happy to help!
- Can you connect an AUX cable and connect it to a mobile device or PC headphone port and see if low audio is still present?
- Have you tried a different speaker with this Bluetooth receiver at all?
- Can you try and reboot the Wave system by disconnecting power for 1 minute?
Let us know so we can further assist!
Warm Regards,
Tony A - Community Support