how do i know if my subwoofer is actually working
Play low tones from 60 Hz down to 30 Hz in the Bass Test. A working sub gets louder and you can feel the room shake. If it stays silent, check…

Bass Performance Validator at Sound Test
Amit Malhotra is the Bass Performance Validator on the Sound Tester Audio Team. Focuses on sub-bass rattling diagnostics, low-end frequency drops, and harmonic distortion at high volume.
Amit Malhotra is the Bass Performance Validator on the Sound Tester Audio Team. Focuses on sub-bass rattling diagnostics, low-end frequency drops, and harmonic distortion at high volume. Active across Discord and X (Twitter) troubleshooting amplifier signatures. On Sound Tester he answers subwoofer, crackle and hum discussions, and checks whether a fault is clipping, a ground loop or a damaged speaker.
Play low tones from 60 Hz down to 30 Hz in the Bass Test. A working sub gets louder and you can feel the room shake. If it stays silent, check…
Crackle that starts as volume rises is usually clipping, not a blown speaker. Lower the PC volume, raise the speaker volume and test with a sweep to…
A hum with the interface volume down is usually a ground loop between the monitors, interface and PC. Use balanced cables and plug everything into…
Low bass travels through floors. Put the sub on a decoupling pad, lower it a little and use the Bass Test at night level to find a level that stays…
Boomy bass in a small room is mostly room resonance. Move the sub away from walls, lower its level and run a Frequency Sweep to find the loudest…
Break-in changes are small. Most of what you notice is your ears adapting and the room. Use the same test tracks to compare.
Send purchase proof, serial number, a short video of the fault and your test results from the Speaker Test and Frequency Sweep.
Static that follows mouse movement is electrical interference from the USB port or a ground loop. Move the cable, try another USB port or add a USB…
A blinking sub means it lost the pairing with the soundbar. Re-pair by holding the ID SET button on the sub while the soundbar is on, then power…
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