Chrome Version       : 52.0.2705.0 canary (64-bit)
URLs (if applicable) :https://hangouts.google.com/
OS version               : 10.11.4

What steps will reproduce the problem?
(1) Start 2-way hangout from Chrome 
(2) Ask party on the other side if they can hear voice/sound input
(3)

What is the expected result? They hear you speak


What happens instead? They don't hear you speak