One speaker sounds quieter? Test it before a call

One side of your speakers sounds quieter, and you have a conference call coming up. The cause could be the speaker, a balance setting, the audio connection, or the call app. A quick left and right check can narrow it down before people join.

The Speaker Test plays audio through each channel, plus a frequency sweep and tone generator. It lets you compare what you hear, but it does not measure the speakers' actual sound level in decibels.

Test the left and right speakers

1. Open the Speaker Test and make sure your computer is using the speakers you plan to use on the call.
2. Set your device volume to a comfortable, moderate level. Pause music, videos, and other audio so they do not mask the test.
3. Play the left channel, then the right channel. Listen from the same position and compare how loud each sounds.
4. Repeat the comparison once. If the difference is clear, try the frequency sweep on each channel to see whether it affects all tones or only part of the range.
5. If you use separate speakers, check that the left test comes from the speaker on your left and the right test from the speaker on your right.

Keep the volume low enough to listen comfortably, especially before using the tone generator or frequency sweep. A browser test plays sound through the selected output, so another app or device setting can still affect what you hear.

What the result means

One channel is consistently quieter

If the same physical speaker sounds quieter with the left and right channel tests, the issue may be its volume setting, cable, connection, or speaker hardware. Check the system balance and connections before deciding the speaker is damaged.

The quiet side changes when you switch channels

If the test's left channel sounds quiet through either speaker, or the right channel sounds quiet through either speaker, suspect a software balance setting or the audio output path rather than one speaker. Check the balance controls and try a different output device.

Both channels sound even in the test

The speakers can produce similar levels during this browser test. If people still sound uneven during a call, check the conference app's selected output, its audio settings, and the volume of the person speaking. A call may use a different output or process audio differently from the test.

The difference appears only on some tones

A speaker can reproduce one part of the sound range less clearly than another. A sweep may help you notice where the difference occurs, but this listening test cannot identify a specific damaged component. Try ordinary speech and familiar audio at a comfortable volume too.

You cannot tell which side is quieter

Room position, reflections, and hearing differences can affect what you perceive. Sit centered between the speakers and repeat the test. If possible, ask another person to listen from the same position. A browser test cannot determine whether a perceived difference comes from your hearing or the speaker.

How to fix an imbalance

1. Check the balance setting. On Windows 11, open Settings › System › Sound, select the output device, and check its left and right channel levels if they are shown. On macOS, open System Settings › Sound › Output, select the speakers, and move the Balance control to the center.
2. Check mono audio and sound effects. Mono audio can combine stereo channels, while spatial effects or enhancements can change what you hear. On Windows 11, check Settings › Accessibility › Audio for Mono audio, then check Settings › System › Sound for output effects. On macOS, check System Settings › Accessibility › Audio for Play stereo audio as mono, and turn it off for a stereo comparison.
3. Confirm the call app's output. In the conference app's audio settings, select the speakers you tested, not a monitor, headset, or other device. Check that any app-specific left-right balance or volume control is centered or even.
4. Check the speaker controls and connections. Confirm that both speakers have power and that any physical balance knob is centered. For wired speakers, reseat the audio plug and check that the cable is not loose or strained.
5. Try another audio source. Play a familiar recording or join a test call. If the imbalance occurs only in one app or one recording, the speakers may be fine and the source may have uneven channels.
6. Reconnect or restart. Unplug and reconnect USB or audio cables. For Bluetooth speakers, reconnect them and confirm that the correct device is selected. Restart the computer if the balance stays wrong across apps.

When it may be the speaker hardware

If the same physical speaker remains quieter across the browser test and other audio sources, check it on another computer or audio source if one is available. For separate wired speakers, you can swap the left and right connections if the cables and setup allow it. If the quietness moves with the speaker, the speaker or its cable is the likely cause. If it stays on the same output channel, check the computer, adapter, or amplifier instead.

Do not open a powered speaker to inspect it. Replace a damaged cable first, then use the manufacturer's warranty or a repair service if the speaker itself remains faulty. For a conference call, a working headset or another speaker set is a practical temporary option.

Why the test and the call can sound different

The Speaker Test sends left and right audio through the browser's selected output. A call app may use another output device, combine audio to mono, or apply its own processing. Some remote callers also send mono audio, where there is no separate left and right channel to compare.

Use the test to check the output path, then verify the selected speakers inside the call app before the meeting. The browser test is a comparison by listening, not a calibrated measurement of speaker loudness.