Where to Place a Subwoofer for More Even Bass

Let your seats pick the spot

If some bass notes boom while others disappear, moving the sub is the first thing to try. For a single sub, SVS suggests starting in a corner (opens in a new tab), while Genelec recommends a spot along the front wall (opens in a new tab), slightly off-center.

We'd try both, because a corner can make the bass louder while also exaggerating peaks, and only your seats can tell you which trade-off works in your room. If only one seat matters, set things up for that seat. If the sofa is regularly full, pick the best compromise across it.

Why a note can boom in one seat and fade in another

At your seat, sound coming straight from the sub mixes with sound bouncing off the walls, floor and ceiling, and those can add up or cancel each other out. Room resonances also create peaks and dips, and how much you hear them depends on both where the sub is and where you sit. That's why two seats a few feet apart can hear very different bass.

Use placement to fix the biggest gaps before you reach for EQ. EQ can tame some peaks, but boosting a deep dip (opens in a new tab) can take so much amplifier power that the amp clips and the sound gets worse. And when a wall reflection causes the cancellation, turning the sub up turns the reflection up too.

Pick spots you can safely keep

Call the sub's current spot A, a practical front-wall spot B, and a corner C if you have one. Keep walkways clear and stick to spots that meet your sub's installation instructions. Cross off any spot that needs a stretched cable or gets in the way every day.

Check your model's orientation, ventilation and clearance rules before you move it. The Yamaha NS-SW100 and NS-SW050 (opens in a new tab), for example, need at least 20 cm (about 8 inches) above, behind and on both sides, because the built-in amplifier gives off heat from the rear panel. They must never sit with the rear panel facing down.

Stop playback and follow your equipment's shutdown and disconnection steps before each move. For the Yamaha NS-SW100/NS-SW050, unplug the power plug and the wires to other equipment first, never pull on the wires themselves, and don't hold it by the port, which can hurt you or damage the sub. When you reconnect, keep the sub and your other audio and video gear unplugged until every connection is complete and secure, then plug the AC power back in.

Compare each spot the same way

This first pass narrows the field, and you'll judge the likely winner after calibration. Keep the music and settings the same throughout this pass, so the only thing changing is where the sub sits.

1. Pick your main seat and the other seats you use regularly. Decide up front whether the main seat wins or you want the best compromise across the sofa.
2. Choose a song you know with a repeating bass line and note the timestamp. Add a movie scene you know if you watch movies on this system. Write down the playback volume and any sub level, phase, crossover and EQ settings so you can repeat them.
3. With the sub at A, listen from each seat on your list. Note which moments boom, fade or drown out everything else, and keep the volume comfortable.
4. Stop playback, move and reconnect the sub following your equipment's instructions, then play the same passages with the same settings at B. Do the same at C if it's usable.
5. Compare your notes seat by seat and pick the spot with the fewest distracting booms and dropouts at your priority seats. If it's close, keep the more practical, safer spot, or keep two finalists and calibrate each one.

What you have now is a shortlist based on your current settings. Once you've picked a likely permanent spot, run the right calibration and replay the same passages from the same seats. Comparing two finalists? Calibrate each one before you make the final call.

Try the subwoofer crawl

The subwoofer crawl (opens in a new tab) flips the usual setup around to find a promising spot for your main seat. The sub goes where you sit, and you listen around the room with your head down near knee height, which is where the name comes from.

1. Put the sub at or near your main seat, following its moving and installation instructions. Get help if it's big or heavy, and skip the crawl if there's no safe spot to set it down temporarily.
2. Loop a familiar soundtrack with a repeating bass line at a comfortable volume.
3. Go to each spot where the sub could actually live and listen with your head at or near knee height. Compare how balanced the bass sounds.
4. Move the sub to the most promising usable spot, then check it from your main seat and the other seats you care about.

Because the crawl starts from one seat, that last check from the other seats is the part that tells you whether the spot works for the whole sofa.

Measure it if your ears can't decide

We'd start with the listening comparison and bring in measurements only if it leaves you stuck, since measuring takes extra gear. It pays off when you want to see exactly which frequencies are the problem or compare spots more closely.

Room EQ Wizard (opens in a new tab) is free room and speaker measurement software, but you still need the hardware. One practical setup is a computer, a calibrated USB microphone, an audio connection from the computer to your system and a steady mic stand.

Put the mic on a tripod at seated ear height, and if it points up for low-frequency measurements, load its 90-degree calibration file. Go through REW's equipment setup (opens in a new tab) before you measure, then measure each priority seat with the sub at each spot.

Keep the question narrow: which spot cuts the biggest peaks and gaps across the seats that matter? Measure every one of those seats, because a graph from one mic position describes only that position.

When the sub has only one place to go

We'd try other seats before buying another sub. Try different sofa cushions, or move a chair forward or back if the room allows, because a small change in where you sit can move you out of a peak or dip. If you have some room to slide the sub along the wall, compare another spot there too, keeping the required clearance.

Keep the sub the way it's meant to stand. The Sonos Sub Mini (opens in a new tab), for example, goes upright near the speaker it's paired with, and against a wall or furniture it needs enough clearance for air to move through its center tunnel. Keep it upright even when space is tight.

If no single spot gives you good bass across your seats, a second sub is worth considering. Well-placed multiple subs can make the bass much more consistent across the listening area, and they still need careful placement and setup to get there.

Plan where they go and how they're set up together. With Revel B112V2 or B110V2 subs, set each one's PEQ separately, then adjust levels and crossovers together so they blend with the main speakers. Those PEQ controls need proper measurement gear, so contact a Revel dealer or an installer if you'd rather have that part done for you.

Calibrate, then listen from every seat

With the sub in its new spot, run your system's room calibration before any fine-tuning (opens in a new tab), using the calibration steps for your receiver and sub.

Then use the controls your gear has. If the bass still sounds weak around the crossover, where the sub and main speakers hand off to each other, go through their phase-alignment steps. Phase misalignment (opens in a new tab) can cut the sound level right there, so set phase and crossover for your own system instead of copying someone else's numbers.

Play your comparison passages again at every priority seat. You're listening for bass that blends with the speakers and doesn't keep booming, fading or drawing attention to the cabinet.

If the balance is good but the bass is too strong overall, adjust the level using your equipment's guidance. If certain notes still vanish at certain seats, go back to placement or seating before you try a big EQ boost.