Surround Sound Test

What this surround sound test can and can't do

This page simulates where each speaker in a 5.1 or 7.1 layout should sound. In Speakers (stereo) mode it pans sound between your left and right speakers. In Headphones (3D) mode it uses 3D audio processing to suggest positions around your head. Either way, everything you hear comes out of two channels.

That makes it useful for a few things: learning the standard layout, checking that your left–right balance is correct, and hearing roughly where each position is meant to be. It's also a quick way to show someone new to home theater what "front left" or "surround right" means.

What it can't do is check whether each speaker in a real surround system is connected and working. Browsers send stereo audio on almost every device, so a web page can't address your center, surround or rear speakers one by one. If a page claims it can run a full 5.1 surround sound test or 7.1 surround sound test in your browser, treat that claim with caution.

We'd rather be clear about this than promise something a browser can't deliver. If you need to confirm a real system, the section "How to test a real surround system" below lists methods that do send a separate signal to each speaker.

How to use the simulation

Choose 5.1 or 7.1, then pick Speakers (stereo) or Headphones (3D). Click any position on the room map to hear a short burst of soft noise from that direction, or press Play all in order to go around the room clockwise. Use the left and right arrow keys to step through positions.

The page also shows how many output channels your browser reports. This is for information only. Even when the number is higher than two, how audio reaches your speakers depends on your system, drivers and receiver.

5.1 vs 7.1 speaker layout

A 5.1 system has a front left, center and front right speaker, two surround speakers, and a subwoofer — the ".1". A 7.1 system adds two rear surround speakers behind your seat.

In a 5.1 system, the two surround speakers usually sit beside you or slightly behind your seat, a little above ear height. Real rooms rarely allow perfect angles, so treat these numbers as a starting point. Getting the speakers roughly symmetrical around your seat matters more than hitting an exact degree.

Common guidelines place the front left and right speakers about 22–30° to each side of the center, side surrounds at about 90–110°, and rear surrounds at about 135–150°. The center speaker sits directly above or below the screen and carries most of the dialogue. The subwoofer is less sensitive to position, which is why it can usually sit off to one side.

How to test a real surround system

1. Use your AV receiver's built-in test tone, usually found in the speaker setup menu. It plays each speaker in turn, so you can confirm every one is connected and on the correct channel.
2. Run the receiver's auto-calibration with its microphone, if it has one. It sets distances and levels for your room.
3. On a PC or console, set the output to 5.1 or 7.1 in sound settings and use the system's own speaker test.
4. Play a dedicated Dolby or DTS test file or disc through a player and receiver that support it.

These methods send a separate signal to each speaker, which is exactly what a browser can't do. Use them whenever you need to know that a specific speaker is working.

Using the 3D headphone mode

In Headphones (3D) mode, sounds are processed so they seem to come from around you rather than just from the left or right. Everyone's ears and head are shaped differently, so some people hear the effect clearly and others mostly hear left and right. Positions behind you are the hardest to place.

For the best result, use wired or Bluetooth headphones with spatial audio and head tracking switched off, so your headphones don't add their own processing on top. Close your eyes and listen for direction rather than loudness.

Keep the volume low and comfortable. The effect doesn't get clearer when it's louder, and short listening sessions with breaks in between make it easier to notice subtle differences between positions.

Common surround problems

• Rear speakers are silent: check the receiver's speaker configuration, and make sure the source is actually sending surround audio. Many streaming apps and TVs fall back to stereo unless surround output is enabled.
• Dialogue is too quiet: raise the center channel level in your receiver's settings, or check that the center speaker isn't set to "none".
• Sound comes from the wrong position: compare the speaker wires against the labels on the back of the receiver, then run its test tone again.
• Surrounds sound too loud or too quiet: re-run auto-calibration from your usual seat.
• Only stereo comes through over HDMI: check that your TV passes surround audio on to the receiver or soundbar. Look for settings such as passthrough, bitstream or eARC in the TV's audio menu.

Related tests

Use the Left Right Speaker Test to confirm your front left and right speakers are on the correct sides, and the Bass Test to check your subwoofer and its crossover.