Home Audio From the Ground Up: Speakers, Soundbars, and What Connects Them

The two main paths: speakers vs. soundbars

Home audio for most families comes down to a choice between two setups: a soundbar or a separate speaker system. Understanding what each one is physically will make everything else easier.

A soundbar is a single elongated enclosure containing multiple small drivers (the individual speaker units inside). It sits below or in front of a TV and handles left, center, and sometimes surround channels from one box. Many include a separate wireless subwoofer for bass. The appeal is simplicity: one power cable, one audio connection to the TV, done.

A separate speaker system pairs individual speakers with an external amplifier. Those individual speakers can be compact bookshelf models or larger floor-standing units. This path requires more components, more cables, and more physical space, but it generally produces more accurate, room-filling sound because each speaker can be positioned where it works best.

Neither path is objectively better. A soundbar in a bedroom or apartment living room can sound excellent. A modest two-speaker setup with an amplifier can outperform a premium soundbar in a larger, dedicated room. The question is how much space you have, how many components you want to manage, and how much sound quality matters relative to convenience. See our consumer electronics jargon guide for definitions of terms you will encounter on product pages as you research.

What a receiver does and when you need one

A receiver is an amplifier with routing built in. It takes audio signals from multiple sources (a TV, a streaming device, a Blu-ray player) and sends the amplified signal to each speaker in the system. An AV (audio/video) receiver also handles video switching and decodes surround-sound formats like Dolby Atmos.

You only need a receiver if you are using passive speakers. A passive speaker has no amplifier inside; it requires an external amp to drive it. Connect a passive speaker directly to a TV's headphone jack and you will get little or no sound, because the signal is too weak.

If you buy active (powered) speakers, they have amplifiers inside and connect directly to a source. Active speakers are common in desktop audio and some two-channel home setups, and they reduce the component count considerably.

For a family looking to avoid complexity, active speakers or a soundbar are the more practical starting points. For anyone who wants to build a system over time, adding speakers as budget allows, a receiver with passive speakers is more flexible.

Connections: wired vs. wireless

Most TVs now include at least one HDMI ARC or eARC port, an optical (Toslink) output, and a 3.5mm headphone jack. HDMI ARC and eARC are the most capable audio connections: eARC, the newer standard, passes lossless and object-based audio formats that optical cannot handle. If your TV and soundbar both have eARC, use it.

Optical is a reliable fallback when HDMI ARC is unavailable, but it caps audio quality at Dolby Digital 5.1 and cannot carry newer formats. The headphone jack works for basic stereo connections but is the weakest option in terms of signal quality.

Wireless speaker systems use protocols such as Wi-Fi, Bluetooth, or proprietary radio formats. Bluetooth is ubiquitous and easy to set up, though it compresses audio and has a limited range of roughly 30 feet. Wi-Fi-based systems can carry higher-quality audio and are less prone to interference in a home full of devices, but they depend on your home network staying stable.

Wired connections between a receiver and passive speakers use speaker wire: a two-conductor cable with no connector standard (you strip the end and clamp it into terminals). Speaker wire is inexpensive and reliable, and it does not add latency.

Room size, placement, and acoustics

A room is not a neutral container for sound. Hard parallel walls create flutter echo (a rapid, metallic reverb). Large open-plan spaces dissipate bass before it reaches the listening position. Carpets, upholstered furniture, and curtains absorb high frequencies; bare floors and concrete walls reflect them.

For a typical living room, speakers work best when the left and right units form an equilateral triangle with the main listening seat. Tweeters (the small drivers that handle high frequencies) should aim at ear level when seated. Pulling speakers at least 6 to 12 inches away from the back wall reduces bass buildup.

A soundbar placed on a shelf below the TV works well in rooms up to roughly 300 to 400 square feet. Beyond that, the limited dispersion of a single bar often leaves the sides of the room feeling thin. Adding the wireless subwoofer that ships with many soundbars does extend perceived volume and bass depth, but does not address stereo width.

Apartment dwellers should also consider neighbors: a subwoofer on a wood floor transmits bass through the structure. Placing it on a foam pad or isolating it on a shelf reduces transmission without affecting the sound you hear. For a parallel look at how room conditions affect a TV's picture, see our TV spec sheet guide.

Reading the specs that matter

Wattage is the most misread number in audio. A spec sheet may list peak power, continuous (RMS) power, or total system power, and manufacturers are not always consistent about which they report. Two 50-watt RMS channels is a very different thing from a "100-watt" system where that total is split unevenly across many small drivers.

Frequency response tells you the range of tones a speaker reproduces, usually listed as something like 50 Hz to 20 kHz. A lower bass limit (40 Hz or below) suggests a speaker can handle deep bass without a subwoofer. A flat frequency response across the range is generally preferable to one with exaggerated peaks, though manufacturers rarely publish the tolerance (plus or minus dB) that would make the number meaningful.

Impedance, measured in ohms, matters when pairing passive speakers with a receiver. A 4-ohm speaker draws more current from an amplifier than an 8-ohm speaker. Running 4-ohm speakers on a receiver rated only for 8 ohms can cause the receiver to overheat. Check both the speaker's impedance and the receiver's supported range before connecting them.

Channel configuration is written as numbers separated by periods: 2.1 means two full-range channels plus one subwoofer channel. 5.1 adds two rear surround channels. 7.1.2 adds two height channels for object-based formats like Dolby Atmos. More channels are not automatically better; they require more speakers, more wiring, and a room large enough to benefit from the added directionality. If you are also setting up smart speakers alongside your audio system, review compatibility questions before committing to any ecosystem.