Full DTS:X files in 1080p MKV — object-based audio demos with DTS-HD 5.1 fallback
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-DTS X All Around Us-
Codec: mkv
Audio format: DTS-HD MA 7.1, DTS:X
- PREVIEW
- DTS-HD 7.1
- DTS:X

-DTS Out of the box Long-
Codec: mkv
Audio format: DTS 5.1, DTS:X
- PREVIEW
- DTS 5.1
- DTS:X

-DTS Out of the box Medium-
Codec: mkv
Audio format: DTS 5.1, DTS:X
- PREVIEW
- DTS 5.1
- DTS:X

-DTS Out of the box Short-
Codec: mkv
Audio format: DTS 5.1, DTS:X
- PREVIEW
- DTS 5.1
- DTS:X
-Ads-
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DTS All Around Us and the full DTS:X page — page 6
Unlike page 5, where DTS:X shared space with DTS-HD MA files, page 6 is entirely DTS:X. Before downloading, it’s worth checking whether your receiver supports the format — most files here won’t play back as intended without it.
DTS All Around Us leads the page with 20,210 DTS:X downloads against 9,310 for the DTS-HD MA fallback. At 120 seconds and 158MB it’s the longest proper demo here, and that runtime is likely a factor — enough content to actually walk the room and evaluate object placement across a real mix.
Sound Unbound Callout 11.1 follows closely at 18,720 downloads and is the only file on the page with no fallback format whatsoever — DTS:X only. In practice, very few home setups run 11.1, yet the file gets downloaded regardless. Partly it’s a compatibility check; partly there simply aren’t many 11.1 demos available anywhere, so curiosity drives the numbers.
Out of the Box has three versions on this page. Sizes are 85.4MB for the long cut, 52.9MB for medium and 19.7MB for short. Checking the listed runtimes against those file sizes, something doesn’t add up — at least two of the durations look wrong, so take them as a rough guide only. Numbers-wise the long cut gets downloaded most, medium sits in the middle and short least — which is the pattern you’d expect. All three are 1080p MKV, and if your player doesn’t decode DTS:X natively, a DTS-HD 5.1 track is there as a fallback.

