WebThe four principal likely causes of hum are: (1) Electrical defects in the powered subwoofer; (2) Induced noise in the audio signal path, most likely around cables; (3) Ground loop noise resulting from different ground potential at the receiver and the subwoofer; and. (4) Noise arising from these causes in or between other components upstream ... WebJun 6, 2024 · I tried a 5m cable with a 2m extension but it was not noticeably better. The mains for this sub is close to the sub and hence not close to amp. This earth loop is much larger and picks up a significant hum which I would like to eliminate. Further evidence that the problem is an earth loop: The hum is stopped if the signal cable is disconnected.

Ground Loops - Eliminating System Hum and Buzz

WebMains hum, electric hum, cycle hum, or power line hum is a sound associated with alternating current which is twice the frequency of the mains electricity.The fundamental … WebDec 6, 2005 · A ground loop typically adds a loud low-frequency hum or buzz as soon as you plug in any of various audio or video components, including subwoofers, cable-TV outboard boxes, satellite-TV feeds, TV displays, amplifiers, A/V receivers or turntables. 66套保健操

Ground loops in my new house, what can I do about this?? - reddit

WebJul 11, 1997 · A ground loop is a problem that exists when a device sees more than one path to ground (or "earth"). It manifests itself as a 60 cycle hum in the audio system. … WebMar 25, 2011 · Mar 24, 2011. #1. SYMPTOMS: (audio hums, but does not know the words) A. There is a low frequency hum coming from the speakers or subwoofer. B. There is a Faint Horizontal line, drifting up or down in the TV picture. Indicates there is a ground loop, which is relatively simple and inexpensive to fix. A ground loop occurs when two earths … WebNEW FEATURE: Ground loop discussion. Ground loop problems discussion forum at ePanorama.net discussion forum system is created to allow discussion on all topics … 66婚博园