For What It's Worth
As a 59 year old 20 military veteran I have used expensive high tech hearing aids for years to help with loss of high frequency sound. Over the past year I noticed an obvious loss of television vocal audio when using DD 5.1. This loss varies according to the channel and program. Being tired of the constant good here, bad there audio I have found that switching my Denon AVR to Multi Channel audio provided a good solution.
LG OLED 55EG9100 HDTV, DirecTV HD DVR Genie HR44, DirecTV AM21 OTA Receiver, Sony BDPS6500 Blu-Ray, Bose Soundtouch 130 HTC (Sound Bar), Panamax MR5100 Power Manager, Harmony Ultimate One Remote, Monoprice AV Cables
LG OLED 55EG9100 Calibrated by Best Buy Geek Squad