Speaker & Sound Test

Is the left speaker working? Are your headphones wired the right way round? Can your speakers reproduce deep bass? This tool plays test sounds through your browser so you can check channels, balance and frequency range on speakers, headphones and phones.

How to use it

1. Set your system volume to a moderate level first.
2. Play the left and right channel tests and confirm each sound comes from the correct side.
3. Play tones at different frequencies to check bass and treble.
4. Use the water-eject tone if your phone speaker sounds muffled after getting wet.

What each test checks

• Left / right channels: confirms stereo wiring and that both speakers work.
• Balance: both sides should sound equally loud at centre; if not, check the balance setting in your operating system.
• Frequency tones: humans hear roughly 20 Hz to 20 kHz. Small laptop and phone speakers usually cannot reproduce much below 100 to 200 Hz, and high-frequency hearing declines with age.

Water eject tone

Phones with water resistance can still trap water in the speaker grille, making sound muffled. Playing a low-frequency tone (around 165 Hz is commonly used) at high volume vibrates the speaker membrane and helps push water droplets out. Place the phone with the speaker facing down and play the tone for 30 to 60 seconds. It can help, but it is not guaranteed and does not repair water damage.

Safety

• Start quietly. Pure tones at high volume can be uncomfortable and can damage hearing, especially through headphones.
• Very low tones at high volume can stress small speakers; stop if you hear distortion or rattling.

Sounds are generated with the Web Audio API in your browser; nothing is recorded.