spradhan01

I recently bought Klipsch reference theater pack with couple of R-41M bookshelf speakers and a Yamaha Tsr-700 7.1 receiver. When I play any movie or music using Bluetooth, it sounds great with rich bass and a proper atmos sound when supported but when I play same exact content using hdmi, there is no bass at all and it sounds very weak and lacks atmos. So, I am not sure why audio is poor using hdmi vs Bluetooth? Any suggestions?