Living Room & Media Wall Lighting

Cove lighting: ambient light with no visible source

Cove lighting is a strip hidden in a recess that throws light at the ceiling. The ceiling becomes the light source, the room fills evenly, and nothing glares because you never see the diodes.

It is the most convincing thing you can do to a living room ceiling, and it is also the thing most likely to look wrong if the strip is chosen carelessly. Three rules.

Use COB, not SMD. A cove throws its light onto a flat plane at close range. Any spacing between chips shows up on the ceiling as a row of scallops. COB strip puts the chips in a continuous line and casts a continuous band.

Keep the run on 24V. A cove around a whole room is a long single circuit, and 12V loses visible brightness along it. All of our COB, CCT and long-run tape is 24V for that reason. For runs beyond a standard reel, long LED strip is built for extended lengths without splitting the circuit.

Give the strip 100 mm of clearance from the ceiling. Too close and the cove produces a hard bright stripe instead of a wash. This is a construction decision, not a product one, so settle it before the plasterer arrives.

The profile does the rest. Plaster-in profiles set into the plasterboard and finish flush with no visible frame. The CAL series adds an anti-glare lip, and the 1 m CAL20 profile with opal cover is the straightforward choice for a first cove. The Glow-Up and Glow-Down variants aim the output deliberately up or down. The range runs in 1 and 2 metre lengths, in raw aluminium, silver anodised and white.

Media walls

A media wall is three lighting jobs pretending to be one: the recess behind the screen, the alcoves and shelves either side, and the floating shelf or fire surround underneath. Each wants a different approach.

Neon flex is the option people underestimate. It runs at 24VDC, 12 W per metre, IP67, in a 4 x 10 mm side-view section on 5 metre reels or a 10 x 23 mm body by the metre, and it bends around corners that a rigid profile cannot follow. On a slatted wall it traces the geometry instead of fighting it. The slim 4 x 10 mm section comes in 2700K white; the 10 x 23 mm body comes in red, green and blue.

TV backlighting

Backlighting a screen is about contrast, not colour. A dim, unsaturated band of light on the wall behind a TV reduces the difference between the bright screen and the dark room, which is what makes long viewing comfortable. That is the whole mechanism, and it works at low output.

Two ways to do it, and they suit different people.

Fixed white bias light. A COB strip along the back edge of the panel, dimmed low, needs nothing but a driver. 4000K keeps the wall neutral behind the picture; the 24VDC COB flexible tape at 6500K at 10 W per metre is the choice if you prefer a cooler wall. It never changes, never needs an app, and it is what the effect was originally for. Pair it with a dimmer and set it once.

Colour, matched to the picture. RGBW or RGBCCT strip gives four channels - red, green, blue and a dedicated white - or five to six channels with tuneable white, at 14 to 19.2 W per metre. The 24VDC COB RGBW at 4000K draws 14 W per metre and keeps a dot-free line behind the panel. The dedicated white channel is the point: an RGB strip mixing its own white produces a colour cast, which is exactly wrong behind a screen you are judging colour on.

For per-segment effects that follow the picture across the width of the panel, SPI digital strip addresses each pixel individually using WS2811, WS2812B or SK6812 driver ICs. Our 24VDC COB digital version runs 10 pixels per metre at 15 W per metre; the SMD5050 WS2811 build runs 18 W per metre.

Whichever route, the control sits in LED light controllers: RF, touch panel and WiFi options, single zone through six-zone RGBCCT.

Layering it together

The three layers, and what supplies each.

Marc LED supplies the ambient and accent layers as components, and the task layer wherever it can be built in: a strip under a shelf or inside an alcove does the same job as a reading lamp without taking up floor space. Where the task light is a free-standing lamp, what we can do is make sure the other two layers do not fight it.

Colour temperature for a living room is 2700K to 3000K across the board. This is the room people relax in, and neutral white belongs in a kitchen. The exception is the bias light behind a screen, which wants to be neutral or cool so it does not tint the picture.

Power and control

Every run needs a driver sized above total load. A perimeter cove in a large room can exceed a single supply, in which case split the run and feed from two points instead of pushing one driver to its limit, and check constant voltage against constant current for what your strip actually needs.

Diffusers change the output more than most people expect. Compare the options in diffusers and covers before settling on a profile.

FAQ

1. What is cove lighting?

A strip of light hidden in a recess, usually a ledge or dropped ceiling perimeter, that throws light upward onto the ceiling. The ceiling reflects it back as soft, even ambient light, and the source itself stays out of sight.

2. Are LED strip lights good for cove lighting?

They are the standard solution. Fit COB strip in an aluminium profile so the aluminium acts as a heat sink and the diffuser turns the line of chips into a continuous band. A full perimeter run wants 24V so brightness does not fall away at the far end.

3. What lights should I use in a media wall?

COB strip in profile for anything visible at close range, RGBW behind the screen if you want colour, and neon flex where the run has to bend around panelling. Choose the profile by position: plaster-in for a flush perimeter, corner profile for alcoves, surface profile under floating shelves.

4. What are the best lights to put behind a TV?

A dim neutral white strip is the answer for viewing comfort, because the effect works by reducing contrast between the screen and the dark wall. If you want colour as well, use an RGBW strip with a dedicated white channel rather than an RGB strip mixing its own white, which casts a tint.

5. How do you put lights in a media wall?

Plan the recesses and cable routes before the wall is boarded. The strip sits in an aluminium profile fixed into the recess, the driver hides in the void or an adjacent cupboard, and the control cable runs back to a switch or controller position. Retro-fitting into a finished media wall means opening it up again.

6. What are common mistakes with LED strip lights?

Sticking the strip to plasterboard with no profile, which runs it hot and shortens its life. Using SMD where the light lands on a flat surface close by, which shows dotting. Running a driver at its exact rated load. And feeding a long perimeter run at 12V, which comes out dimmer at the far end than at the driver.

7. Do LED strips add much to the electricity bill?

Not meaningfully. Our COB range runs 9.6 to 19 W per metre, so a full living room perimeter draws less than a single old halogen downlight. Strip lighting is on for long periods rather than at high power, and the two are not the same thing.