The short version
A soundbar upgrades a TV's sound in one tidy bar, and mounting one well is about three things: getting it centered and level relative to the screen so it looks intentional, getting the audio connection working so it turns on and off with the TV, and concealing the cable so the whole thing reads as clean. Done casually, it sits slightly off-center with a cable dangling and the volume controlled by the wrong remote.
The audio connection is where the fiddly part lives. Modern soundbars use HDMI-ARC or eARC so the TV sends sound to the bar and one remote controls the volume — but the handshake has to be set up correctly on both the TV and the bar, or it defaults to an optical connection with no single-remote control and, on some content, reduced audio.
What tends to go wrong
The visible problem is alignment: a bar hung slightly off-center or not level under the screen reads as sloppy, and one mounted without accounting for the TV's own position can block the screen or the IR receiver. Centering it on the screen and keeping a consistent gap is what makes it look built-in.
The functional problem is the connection. When ARC/eARC is not set up on both devices, the bar will not power and volume with the TV, and the household ends up juggling remotes or falling back to a lesser connection. And the cable, if not concealed, undoes the clean look the bar was meant to provide.
- Bar off-center or not level relative to the screen
- ARC/eARC not enabled on both TV and bar, so single-remote control fails
- Falling back to optical with reduced audio on some content
- Cable left visible, undoing the clean look
- Bar blocking the screen edge or the TV's IR receiver
- Wireless subwoofer or rears not paired or placed
Who this work is for
Soundbar work is a common, quick add — usually alongside a TV mount.
- Homes adding a soundbar under or over a wall-mounted TV
- Rooms wanting cleaner sound without a full surround system
- Fireplace or feature-wall TVs needing the bar mounted to match
- Setups adding a wireless subwoofer or rear speakers to a bar
- Offices and waiting areas improving display audio simply
Alignment, the ARC handshake, and concealment
Alignment is about the screen, not the wall. The bar is centered on the display and set at a consistent gap above or below it, level, and positioned so it does not clip the picture or block the TV's IR receiver. On a wall mount, that means coordinating the bar's bracket with the TV's position; over a fireplace or feature wall, keeping the bar's line parallel to the screen.
The connection is HDMI-ARC or eARC on both ends. ARC lets the TV send audio back to the bar over the HDMI cable and hands volume control to one remote; eARC adds bandwidth for higher-quality audio formats. Both have to be enabled in the TV's settings and matched to the bar, or the system defaults to optical — which works but gives up single-remote control and, for some formats, audio quality. Getting the handshake right is the difference between a bar that just works and one that needs a second remote.
Concealment finishes it. The single HDMI cable is routed in-wall to a recessed outlet or through a rated channel, and any wireless subwoofer is paired and placed for even bass. With the cable hidden and the bar aligned, it reads as part of the television.
- Centered on the screen, level, at a consistent gap
- Positioned clear of the picture and the TV's IR receiver
- HDMI-ARC or eARC enabled and matched on both devices
- Optical avoided as the default where ARC is available
- Single HDMI cable concealed to a recessed outlet
- Wireless subwoofer paired and placed for even bass
How the work runs
A soundbar install is short and precise, usually paired with the TV mount.
- Confirm the TV position and the bar's placement above or below
- Mount the bar centered, level, and clear of the picture and IR
- Route and conceal the connection cable
- Enable ARC/eARC on the TV and match it on the bar
- Pair and place any wireless subwoofer or rear speakers
- Set levels and confirm single-remote control
- Verify sound and control across sources
Testing and verification
A soundbar is checked for alignment, control, and clean cabling.
- Alignment confirmed centered and level to the screen
- Single-remote power and volume working via ARC/eARC
- Audio confirmed across the TV's sources and apps
- Subwoofer and rears paired, placed, and balanced
- Cable confirmed concealed with nothing visible
- IR receiver and picture confirmed unobstructed
What changes the scope
A small job, with a few things that change it.
- Wall construction and mounting method
- Above- versus below-screen placement
- Cable concealment: in-wall versus surface
- Whether a subwoofer or rear speakers are included
- ARC/eARC support on the specific TV and bar
- Whether it is paired with a new TV mount
Common mistakes
Soundbar installs go wrong on alignment, the handshake, and the cable.
- Hanging the bar off-center or not level to the screen
- Skipping ARC/eARC setup and living with a second remote
- Blocking the TV's IR receiver or the picture edge
- Leaving the connection cable visible
- Not pairing or placing the wireless subwoofer
- Running a standard power cord inside the wall
What drives the cost
Concealment and any extra speakers drive the small cost.
- Wall construction and mounting method
- In-wall cable concealment versus surface
- Whether a subwoofer or rear speakers are added
- Recessed outlet if power needs relocating
- Whether it is bundled with a TV mount
Honest limitations
These are the boundaries of what this service can do, stated up front rather than discovered later.
- ARC/eARC behaviour depends on the specific TV and soundbar and their settings; capabilities vary by model.
- In-wall power requires a recessed outlet or a rated solution — a standard cord in the wall is not acceptable.
- A soundbar improves TV sound but is not a substitute for a designed surround system where full immersion is the goal.
- Wireless subwoofer placement is constrained by the room; bass evenness has limits a single sub can reach.
Frequently asked questions
Why won't one remote control my soundbar volume?
Almost always ARC/eARC is not enabled on both devices. When it is set up on the TV and matched on the bar, the TV hands volume and power control to a single remote over the HDMI cable. Without it, the system falls back to optical, which plays sound but gives up single-remote control and, on some content, audio quality.
Above or below the TV?
Usually below, just under the screen, so it fires toward the seating and stays clear of the picture — but above works for a fireplace or console arrangement where below is not practical. Either way it is centered on the screen, level, and clear of the TV's IR receiver so the remote still reaches it.
Can the cable be hidden?
Yes — the single HDMI cable is routed in-wall to a recessed outlet or through a rated channel, so nothing is visible. With the cable hidden and the bar aligned to the screen, the soundbar reads as part of the television rather than an add-on.
Do I need the subwoofer and rear speakers?
Not required, but they add what a bar alone cannot — a wireless subwoofer fills in bass, and rear speakers add surround. If included, they are paired and placed for even coverage. A bar alone is a real upgrade over TV speakers; the extras take it toward a fuller system.
