Soundbar Insets vs. Integrated Speakers: Optimising Acoustics in Bespoke Carpentry

A dedicated soundbar recess is built into the lower section of the media wall — a shelf set back into the stud-work at a depth that matches the soundbar's profile, keeping it flush with the face of the unit. The recess should be ventilated on the rear face to prevent heat build-up during extended use. Cable channels for the HDMI ARC connection and power feed run through the internal stud-work to a recessed socket behind the recess. This is standard carpentry and adds minimal cost.

For Dolby Atmos or true surround-sound configurations, in-wall speaker cables must be routed during the build phase. We install conduit runs to the speaker mounting positions specified by your AV installer, capping the outlet points with flush cover plates that the installer finishes. The carpentry provides the physical infrastructure; the AV installer connects and configures the electronics. This approach is increasingly requested in larger homes across Ascot and Sunningdale where dedicated home cinema rooms are being converted to open-plan living spaces.

The conduit itself matters more than it sounds. We use a smooth-bore corrugated conduit of a diameter generous enough to pull speaker cable and a spare data cable through together, with a drawstring left in every run so a future cable can be pulled through without opening the wall again. Bends are kept as gentle as the stud spacing allows, because a tight right-angle bend inside a closed cavity is the single most common reason a cable pull fails halfway through a job — and by the time that is discovered, the panels are already up.

The single biggest mistake in media wall acoustics is treating sound as a finishing touch rather than a structural input. Once the MDF face is fixed, painted and dry, there is no reasonable way to add a soundbar recess, move a speaker position, or fit a subwoofer bay without cutting back into finished joinery. Every acoustic decision — soundbar recess depth, speaker cable routes, subwoofer housing, slat panel positions — has to be on the drawing before the first stud goes up, alongside the television bracket position and the fire aperture.

At the survey we ask for the make and model of every piece of AV equipment going into the room, not just a rough idea of what is planned. A soundbar's exact width, depth and connector layout, the diameter and depth of a subwoofer, and whether the client already owns in-ceiling or in-wall speakers all change the joinery dimensions. Buying equipment after the wall is built is the single most common reason a recess ends up a centimetre too shallow or a shelf a few degrees out of true.

Atmos soundbars with up-firing drivers work by bouncing sound off the ceiling to create the illusion of height channels, and that only works if the space directly above the bar is genuinely open. A conventional enclosed recess with a shelf or bulkhead above it defeats the entire feature — the up-firing drivers end up pointed at a slab of MDF a few centimetres above them instead of a flat ceiling several metres up. For clients with, or planning to buy, an Atmos soundbar, we either keep the joinery face completely clear above the bar's position, or move to an open shelf rather than an enclosed recess so the drivers have a clear path upward. This is worth deciding before the fire and TV positions are finalised, because ceiling height and beam or downlight positions above the media wall affect how well the Atmos effect actually performs, not just where the joinery allows it.

A subwoofer produces long sound waves that need room to move air, and a sealed cabinet built tightly around one turns the whole media wall into an unintentional bass enclosure — every panel becomes a surface for the sub to vibrate, and low frequencies boom and colour rather than sounding clean. Where a client wants the subwoofer visually hidden rather than sitting exposed on the floor, we build an open-backed, ventilated bay rather than a closed cupboard, decouple the subwoofer from the shelf using isolation feet so vibration is not transmitted directly into the joinery, and stiffen the surrounding panels with additional noggins so they do not resonate at the sub's operating frequency.

Where the room allows it, our honest advice is usually to leave the subwoofer freestanding near the wall rather than inside the joinery at all — most subwoofers actually sound better and are easier to reposition for the best bass response when they are not built in, and it removes the acoustic risk entirely.

Some clients want speakers fully concealed rather than visible, even in an open recess. The answer is a door or panel faced in acoustically transparent speaker cloth rather than solid MDF — the fabric is stretched over a light internal frame that sits proud of the speaker driver by a small margin so nothing touches or dampens the cone, and the frame itself is faced to match the surrounding joinery so it reads as a plain panel when the speaker is off. Fabric colour and weave are chosen to balance two things: enough openness that high frequencies pass through cleanly, and enough opacity that the driver behind it is not visible under normal room lighting. It is a good solution for family rooms where an exposed speaker grille does not suit the interior, but it does add workshop time compared with an open shelf, since the frame has to be built and covered as a separate component rather than simply left as a gap.

Large flat panels of MDF, especially over an open cavity, behave a little like a drum skin — they flex slightly under bass energy and add an audible boxiness to whatever is playing through the television or a nearby speaker, even when no speaker is actually built into the wall. We manage this in three ways as standard: panel backs over 600mm or so in any dimension are braced with a mid-span noggin rather than left as a single unsupported sheet; larger façades use a thicker board — 18mm rather than 12mm — where the span demands it; and any cavity close to a genuine speaker position gets a layer of mineral wool or acoustic foam to damp internal reflection and reduce resonance. None of this is visible in the finished wall, but it is the difference between a media wall that sounds neutral and one that adds an unwanted hum to bass-heavy film soundtracks.

The clearest projects are the ones where the split of responsibility between us and the AV installer is agreed before either trade starts work. Our usual arrangement is straightforward: we build the sub-frame, conduit runs, recesses and any access panels to a cable and containment schedule the AV installer provides in advance; they then pull, dress and terminate the actual cables once the structure is in place; and we close up the panels and fit the finished joinery afterwards, once the installer confirms every cable is where it needs to be. Getting this sequence agreed at the outset avoids the two most common problems on AV-heavy builds — panels closed up before a cable is pulled, or an installer arriving on site to find a recess a few millimetres too tight for the equipment they were expecting to fit.

Where a client does not yet have an AV installer appointed, we can still build in generous, flexible infrastructure — wider conduit, deeper recesses, spare cable routes — so that whichever installer is eventually chosen has room to work rather than a fixed design to fight against.

Conduit and cable are cheap while a wall is open and genuinely disruptive to add once it is closed, so we encourage clients to over-provide slightly at first fix rather than build only for today's equipment list. As a minimum we recommend a spare HDMI or fibre-HDMI run between the television position and the equipment bay in case a future device needs a second connection, speaker cable run to plausible surround and height-channel positions even if only a soundbar is fitted today, and at least one empty conduit with a draw cord left coiled at both ends for whatever arrives in a few years' time that nobody can specify yet. This costs very little in materials or labour compared with the cost of chasing a cable route through finished, painted joinery later.

Berkshire's varied housing stock changes the acoustic brief as much as it changes the joinery brief. High-ceilinged Victorian and Edwardian rooms in Windsor and Eton, often with a bay window and hard plaster surfaces, are lively and echoey — diffusion from slat panels and soft furnishings does more good here than bracing. Modern plasterboard-and-studwork rooms in Bracknell and Warfield new-builds tend the other way, towards boomy bass building up in corners, so cavity damping and panel bracing in the joinery matter more than surface diffusion. On a shared or party wall, we also think about speaker placement in terms of the neighbours as much as the room — positioning subwoofers and bass-heavy speakers away from a party wall where possible reduces the chance of transmitted bass becoming someone else's problem at ten o'clock at night.

Once the wall is built, looking after the acoustic elements is straightforward. Fabric speaker fronts should be dusted gently rather than vacuumed directly, since a vacuum nozzle can pull and distort the weave over time. Acoustic slat panels benefit from an occasional soft-brush vacuum along the grooves, where dust collects more visibly than on a flat painted surface. Ventilated equipment bays should be kept clear of stray cables and clutter so the airflow they were designed to provide is not accidentally blocked. None of this is onerous, but it is worth doing, since the acoustic performance we design in at the start depends on those small gaps and surfaces staying as intended rather than being gradually filled in with cushions, cables and forgotten remote controls.

Textbook speaker placement assumes a symmetrical room with the seating centred on the television, and very few living rooms are actually built that way. A sofa pushed to one side to leave a walkway, a bay window on one flank, or an open archway through to a kitchen-diner all change how sound behaves, so we treat the manufacturer's recommended distances as a starting point rather than a rule. Where a room is asymmetric, we often favour slightly wider or narrower speaker spacing than the textbook figure to compensate for a hard reflective surface on one side, such as a large window, or a soft absorptive one on the other, such as a heavily upholstered sofa or curtained wall. This is discussed at the measuring visit alongside the joinery layout, because moving a speaker position by even 200mm can mean a different stud bay or a different point in the cable run.

Soundbars are replaced more often than the joinery around them, typically every five to eight years as AV technology moves on, so we design recesses with a little tolerance rather than an exact, unforgiving fit to the current model. A recess a touch wider and deeper than the soundbar strictly needs, with the cable route sized for a slightly thicker cable than today's model uses, means a future upgrade is far more likely to slot straight in without carpentry work. Where a client already knows they will upgrade within a few years — for example waiting for a specific new model — we sometimes build the recess to the larger of the two units under consideration, rather than the one currently owned, so the wall does not need revisiting when the new soundbar arrives.

Not every project needs full in-wall speaker routing or a bespoke acoustic treatment plan. Plenty of our clients simply want a tidy, well-ventilated recess for a soundbar they already own, with no ambition for a wider surround-sound system, and building that well is a perfectly complete answer rather than a compromise. Over-specifying conduit and cable routes nobody will ever use adds cost without adding value. The honest conversation we have at the measuring visit is about matching the acoustic infrastructure to what you actually intend to do with the room over the next several years — a simple, well-ventilated soundbar recess for most households, and the fuller Atmos and multi-speaker routing described above for the smaller number of clients building a genuine home cinema experience.