Speaker Test
Check that left is left and right is right, hear how low and high your speakers go, and catch reversed speaker wires.
At a glance
- Plays a chime or noise on the left, the right, both, or moving from left to right, so you can hear whether the channels are the right way round.
- If the browser reports 5.1 or 7.1 output, each surround speaker and the subwoofer can be tested on its own.
- A frequency sweep glides from 20 Hz to 20 kHz (or just the bass or treble) and shows the frequency and musical note as it plays.
- Press I can’t hear it any more to see where your speakers — or your ears — stop at the top.
- A tone generator from 20 Hz to 20 kHz with sine, triangle, square and sawtooth waves, for finding rattles and testing a subwoofer.
- A phase test tells you whether one speaker’s + and − wires are swapped. All sound is made in your browser.
Step by step
How to test your speakers
- 1
Set a safe volume
Turn your system volume low first, especially with headphones.
- 2
Test left and right
Press Left, then Right. Each sound should come only from that side.
- 3
Run a sweep
Press Full range and listen as the tone rises. Note where it starts and where it fades away.
- 4
Check the bass
Use Bass 20 – 200 Hz or a 30–50 Hz tone to hear your subwoofer and find rattles.
- 5
Check the wiring
With two speakers, compare In phase and Out of phase — in phase should sound fuller.
Features
Everything you need, nothing you don’t
Left and right
Separate test sounds for each channel, both together, and a sweep across.
Surround channels
Front, centre, subwoofer and rear speakers on 5.1 and 7.1 systems.
Frequency sweep
Full range, bass-only and treble-only sweeps with a live readout.
Tone generator
Any frequency, four wave shapes and handy presets from 30 Hz to 17.4 kHz.
Phase test
Find reversed speaker wiring by ear in seconds.
Safe volume
Starts quietly, with a volume control and a Stop button always in reach.
What to listen for
| Test | Good result | If not |
|---|---|---|
| Left / Right | Sound only from the named side | Swap the cables, or check the balance setting in your sound settings |
| Both | Sound seems to come from the middle | One speaker is louder, or the balance is off |
| Bass sweep | Smooth rise with no buzzing | A rattle at one pitch means something loose nearby, or a damaged cone |
| Treble sweep | Clear up to about 15–17 kHz | Small speakers often fade early; headphones go higher |
| Phase | In phase sounds fuller and centred | Swap + and − on one speaker |
About frequencies
People hear roughly from 20 Hz (deep rumble) to 20 kHz (a faint hiss), and the top end drops with age — many adults stop hearing above 15–17 kHz. Small laptop and phone speakers rarely reproduce much below 100–150 Hz, so a bass sweep may stay silent until it reaches that point. This is a check of your sound system, not a hearing test.
No sound? Check these
- Output device: make sure the right speakers or headphones are selected in your system’s sound settings.
- Mute and volume: check the system volume, the browser tab (it may be muted), and the speakers’ own volume knob.
- Bluetooth: headphones in “hands-free” mode sound poor and may be mono — choose the stereo (A2DP) device.
- Surround: set the speaker configuration (5.1 or 7.1) in your sound settings, then reload this page.
FAQ
Frequently asked questions
How do I test left and right speakers?
Can I test 5.1 or 7.1 surround sound?
What frequency range should my speakers play?
Is this a hearing test?
What does the phase test do?
Is anything recorded?
Keep going
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