When a Soundbar Is Actually Worth Buying: The Cases That Hold Up

The soundbar is sold as the first upgrade for any television, and in a large number of rooms it is. In a significant minority it produces very little change, and the households that buy one anyway usually describe the result as fine rather than better.

Whether it helps depends on which problem it is solving, and there are three distinct problems that a soundbar can address.

Problem one: the speakers are behind the screen

Flat televisions place their speakers on the rear or the bottom edge, facing away from the viewer. The result is sound that reaches the room indirectly, with little separation and a narrow sense of where things are.

A soundbar placed in front of the screen solves this by aiming the sound at the viewer, which improves clarity and stereo positioning immediately. In this case the improvement is dramatic and it is audible on ordinary broadcast content.

This is the strongest case for the upgrade and it applies to almost every thin television with no external audio. It is also the case that is easiest to verify, since the difference is present within seconds.

Problem two: dialogue is unintelligible

Modern mixing places dialogue at a level that assumes a capable centre channel. Televisions with small downward-facing drivers reproduce music and effects acceptably and lose dialogue in the mix.

A soundbar with a dedicated centre channel addresses this directly and produces the most satisfying result of any audio upgrade for viewers who watch drama. The improvement is in comprehension rather than in spectacle.

This case is worth diagnosing properly before buying. Some intelligibility problems come from room acoustics rather than from the television, and a soundbar will not fix a room with a hard floor and bare walls.

Problem three: the room is large or badly shaped

In a large room, a soundbar often fails to fill the space, and the improvement over the television’s own speakers is smaller than expected. The distance from the viewer defeats a single narrow enclosure.

Very wide rooms have a related problem. A soundbar’s stereo separation is limited by its physical width, which is a fraction of the room’s.

In both cases the correct upgrade is not a soundbar but a pair of speakers on stands, which will cost similar money and produce a substantially larger improvement.

Case one: the small room

The first case is a small living room with a mid-range television and seating at roughly two metres. A mid-priced soundbar produced an obvious improvement in dialogue clarity and a modest improvement in music.

The household described the television as finally being usable for films without subtitles, which is the most common form of satisfaction reported after this upgrade.

The improvement was concentrated in the centre channel, which is exactly what the diagnosis would have predicted.

Case two: the large room

The second case is a long room with seating close to four metres away. A soundbar of the same price produced almost no perceptible change, and the household returned it.

A pair of active bookshelf speakers on stands at the same budget produced a dramatic improvement, because they could move more air and were positioned to create a real stereo image across the room.

The lesson is that a soundbar is a form factor rather than a performance class. In a large room the form factor works against it.

Case three: the upgrade that made things worse

The third case is a household that added a soundbar to a room with a hard floor, large windows and no soft furnishings. The clarity improved and the fatigue increased.

The problem was reflections. The soundbar was aiming sound at reflective surfaces, and the reflections removed the benefit of improved positioning.

A rug and curtains cost less than the soundbar and produced more improvement. Room treatment is unglamorous and it is frequently the actual answer.

How to decide

Play three things through the television before buying anything: a drama scene with dense dialogue, a music track with a clear vocal, and a broadcast news programme. Note which is worst and why.

If dialogue fails and the room is small, a soundbar with a dedicated centre channel is likely correct. If everything fails and the room is large, speakers on stands are the better buy.

If the room is reflective, deal with the room first. It is the cheapest intervention and it improves everything that follows, including the upgrades that come later.

What a soundbar cannot do

A soundbar is a compromise with physics. Its drivers are small, its enclosure is narrow and its stereo separation is limited by its width, all of which are constraints rather than faults.

It also cannot produce genuine low frequency without a separate subwoofer, since a small enclosure cannot move enough air. Soundbars marketed as having deep bass are usually producing upper bass and a suggestion of depth.

Understanding the constraints makes the decision easier. A soundbar is excellent at solving dialogue and positioning problems in a small to medium room, and poor at filling a large space or producing genuine low end.

The centre channel question

Most dialogue in a film mix is delivered through the centre channel, which is why dialogue intelligibility is the first thing to improve or not improve with any audio change.

A soundbar with a dedicated centre driver reproduces that channel properly. A two-channel soundbar simulating a centre sends the dialogue to both left and right, which works in a small room and muddles in a larger one.

This single specification predicts satisfaction better than price, power or brand, and it is the one worth checking before anything else on the box.

Placement and the low end

A soundbar placed inside a cabinet or on a shelf loses most of its benefit, because the enclosure reflects sound back into the furniture. Placement in front of the screen, with clear space around it, matters more than the model.

A subwoofer’s position matters even more and is less intuitive. Low frequencies interact with the room in ways that make some positions produce far more output than others, and the best position is rarely the obvious one.

The practical approach is to move the subwoofer to two or three positions and listen to the same passage at each. The difference is usually large enough to be obvious without any measuring equipment.

When to skip audio entirely

Headphones solve several of these problems at lower cost. For a single viewer, particularly in a flat with neighbours, a decent pair of headphones outperforms any soundbar at the same price for dialogue clarity and low-frequency extension.

Headphones also remove the room from the equation, which means a reflective room stops being a problem. The trade is that nobody else can hear it, which is a limitation only for households watching together.

For a household that watches alone most of the time, the honest recommendation is that audio budget is frequently better spent there, and the recommendation is rarely made because it is not a product category with a marketing budget.

Where this leads

Audio improvements are frequently larger than picture improvements at the same budget, and the reverse is usually assumed. Our piece on the display settings almost nobody changes examines the free picture improvement available before anything is purchased.