Not only does the HDMI output support ARC (or Audio Return Channel, which allows TVs to send audio back to a soundbar), but it also supports eARC, an enhanced version of ARC that boasts enough bandwidth to deliver lossless audio formats such as Dolby TrueHD and DTS-HD Master Audio. The soundbar’s two HDMI ports are on the right-hand side: an input and an output. You’ll find the M51ax-J6’s various ports and connectors in two rear cavities on the left and right. Speaking of mounting, the wall-mountable M51ax-J6 comes with mounting brackets, screws, and a template, along with a quartet of cable ties.
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Likewise, the 5.6 x 3.4 x 2.25 inch (WxDxH) surround speakers could easily be placed on a small shelf or (even better) mounted on the wall, ideally a foot or two above your head when seated. Meanwhile, the wireless subwoofer is relatively compact at 8.25 x 8.25 x 10 inches (WxDxH)-and that’s a good thing, given that most users will likely be positioning the subwoofer near their sofas. Indeed, the top of the unit just barely clears the bottom edge of my low-slung, 55-inch LG C9 OLED TV, a welcome change from soundbars that block a sliver (or more) of the LG’s screen. Measuring 36 x 2.2 x 3.5 inches, the M51ax-J6 arrives with a pleasingly low profile.
#5.1 DTS SOUND DRIVERS#
While virtualized height channels won’t sound as precise as those you’ll get from upfiring drivers (or, better yet, in-ceiling drivers), they can actually be preferable for those with ceilings that are vaulted, too high (above 14 feet) or too low (below 7.5 feet).
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Instead of upfiring drivers that bounce height cues off the ceiling, the M51ax-J6 employs virtualization-namely, DTS Virtual:X-to trick your ears into thinking they’re hearing height effects. The M51ax-J6 supports Dolby Atmos and DTS:X, a pair of object-based audio formats that deliver height as well as surround effects (you can read about those audio formats in this other story).