Key Takeaways
- Flat TVs have physically thin speaker cavities that limit bass and volume output.
- Default audio settings and wrong EQ modes make built-in sound even worse than it needs to be.
- A soundbar, stereo speakers, or AV receiver can dramatically improve your listening experience.
- Room acoustics — bare walls, hard floors — compound the problem of weak TV audio.
- Correct cable connections and audio format settings are essential for any external speaker setup.
Why Built-In TV Speakers Struggle
The era of flat-panel TVs brought stunning picture quality — and a significant step backward in audio. Cathode ray tube TVs of previous decades had enough physical depth to house real speaker enclosures. Today's sets, some barely half an inch thick at the edges, have almost no space for speaker drivers or the air volume needed to reproduce bass frequencies. The result is audio that sounds thin, tinny, and fatiguing at higher volumes.
Manufacturers are aware of the problem and use software processing — virtual surround, bass enhancement algorithms — to compensate, but these can only do so much. The laws of acoustics are not negotiable: producing low frequencies requires physical speaker size and enclosure volume that slim TVs simply cannot provide.
Physical Design Is the Root Cause
The single biggest reason TV audio sounds thin is physics: modern flat-panel TVs are often less than an inch deep, leaving almost no room for speaker drivers or the enclosed cavity needed to produce bass. No software setting or EQ adjustment can fully overcome this hardware constraint. If better sound is a priority, an external audio solution is ultimately necessary.
Understanding this hardware reality is the first step. From there, the question becomes whether to optimize what you have or invest in an external audio solution. Both paths require avoiding the mistakes that make the situation worse than it needs to be. For a deeper look at your speaker format options, see Stereo, Surround, and Soundbars: Understanding Home Audio Formats.
Common Mistakes That Make TV Audio Worse
Even within the constraints of built-in speakers, most people are not getting the best possible sound from their TV. And when they add external audio gear, setup errors frequently cancel out the improvement. Here are the most common mistakes — and how to correct them.
Relying entirely on a TV's built-in speakers without adjusting any audio settings.
Why it happens: Most people unbox a TV, connect it, and watch — assuming factory defaults are adequate. Manufacturers ship TVs with generic audio profiles optimized for showroom floors, not living rooms.
Assuming a soundbar is automatically connected and active after plugging it in.
Why it happens: Buyers often connect a soundbar via HDMI ARC or optical cable but never disable the TV's internal speakers, resulting in overlapping or conflicting audio output.
Using the wrong cable type and losing audio quality or compatibility.
Why it happens: HDMI ARC, optical (TOSLINK), and standard HDMI all carry audio differently. Optical cables, for example, cannot pass lossless surround formats that HDMI ARC supports, leading to downgraded sound.
Placing a soundbar in a cabinet, drawer, or awkward position that blocks sound dispersion.
Why it happens: Space constraints lead people to tuck audio hardware away, not realizing that enclosing a speaker dramatically reduces its effective output and clarity.
Ignoring room acoustics and blaming only the TV or speakers for poor sound.
Why it happens: Hard floors, bare walls, and large glass surfaces all reflect sound waves, creating echo and muddiness that make even decent speakers sound worse than they are.
Room acoustics deserve particular attention because they affect every audio source in the room. Hard floors, bare concrete, and large windows create a reflective environment that turns even good speakers into a muddled echo chamber. Room acoustics shape your listening experience in ways that many TV owners never consider.
Choosing and Setting Up an External Audio Solution
If you've optimized settings and corrected placement but still find the sound lacking, it's time to consider external audio. The options range from a compact soundbar to a full stereo pair with a separate amplifier, or a multi-channel home theater receiver system.
~6W
Typical built-in TV speaker output per channel
Most flat-panel TVs ship with 6–10 watts per channel, compared to 20–100 watts common in entry-level external amplifiers and soundbars.
~80Hz
Lowest frequency most TV speakers reproduce
Human speech sits around 100–300Hz, but music and film sound design extend well below 80Hz — a range built-in TV drivers cannot reproduce.
Soundbars are the most common upgrade: they're relatively compact, connect via a single cable, and provide a meaningful jump in sound quality without complex setup. A stereo pair of bookshelf speakers connected to a small amplifier goes further, delivering genuine left-right separation and richer bass. A full AV receiver with multiple speakers — the home theater approach — offers the most immersive experience but requires more space and planning. Our home theater setup guide walks through that process step by step.
Regardless of which path you take, speaker placement matters. Speakers aimed at a reflective wall or positioned too close to room boundaries will underperform their potential. Speaker placement shapes what you hear — worth reading before finalizing any setup. If you're working with budget or space constraints, home audio on any budget can help you find a practical match for your room and listening habits.
Better TV audio is achievable for most households with moderate adjustments. Start by fixing the settings and placement mistakes outlined above, then decide whether an external solution fits your situation. The improvement can be dramatic — and it doesn't require a major investment to notice the difference.