After careful investigation of the DTS:X audio concern associated with Fast & Furious 6 and Furious 7 4K Ultra HD Blu-ray discs, Universal Pictures Home Entertainment and DTS confirmed the technical problem is not specific to the discs. Some AVRs currently display and decode “DTS-HD HR” or “DTS-HD Hi Res” instead of “DTS:X” when playing DTS:X audio from some Blu-ray and Ultra HD Blu-ray Discs. This will be addressed via an upcoming firmware update expected this summer. In the interim, we suggest playback of the encoded "DTS-HD Master" track and ensuring that "DTS Neural:X" mode is selected to take advantage of your height speakers. This will take the 5.1 mix to 5.1.2 channels.
This FAQ applies to the following Onkyo models:TX-NR646, TX-NR747, TX-RZ800, TX-RZ900, TX-NR555, TX-NR575, TXNR656, TX-NR676, TX-NR757, TX-RZ610, TX-RZ710, TX-RZ810, HT-S7800, SBT-A500