my soundbar and wireless sub were working fine and now the sub light blinks red and no bass. tried unplugging both
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 cycle both.
Wireless subs use a private link to the soundbar. A power cut or firmware change can drop the pairing, and the light blinks until it finds the bar again.
After you make the change, play the Bass Test again to confirm the result. If the problem is still there, add your device, browser and what you tried in the replies so the team can narrow it down.
Checked by Callum Sterling on . How we verify answers
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. 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.
Brandon VanceAudio & Acoustic Performance Lead
Xavier CruzFrequency Sweep Specialist
Diana ChenHearing Test Architect
Alistair CrossHeadphone Benchmark Lead
Imogen BlakeBinaural Beats Engineer
Callum SterlingSurround Sound Auditor
Gemma GallagherTone Generator Validator
Harvey FinchSpectrum Analyzer LeadEach answer is written by the specialist closest to the topic and checked by a second team member. How we verify answers
Answers are free general guidance from the Sound Tester Audio Team and community. They are not medical advice. For hearing loss, ringing or ear pain, see a doctor or audiologist. Opening a device can void its warranty, so check the maker's support first for hardware faults.
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