Please update your cameras firmware to the latest firmware version. This should should solve the audio issue with your MBP85CONNECT camera and the monitor.
To do so, first connect your camera to the Hubble app on your mobile device.
Connecting your camera to the Hubble app:
All Hubble products can be set up using an Android or iOS mobile device only: Android 4.0.3 or higher or iOS 7.1 or later. Currently Windows and Kindle are not supported. Also when adding cameras, you will need to do this using the mobile app.
You can download the app onto the mobile device from the Android Play Store or the Apple App Store.
- Go to the App Store to search for "Hubble for Motorola Monitors".
- Download the Hubble for Motorola Monitors App and install it on your iPhone®/iPad®.