Vizio 2.1 ch. Sound Bar with Wireless Subwoofer - Home Theater Systems "constant humming speakers" Questions

...a faulty cable or blown speaker will cause a humming. If it is a constant humming I would surmise a faulty cable. On the other hand, if the humming comes and goes I would guess a faulty

...constant humming sound, which will get louder when the gain is turned up...thoughts?? Sounds like a bad capacitor in the crossover section within the speaker itself. These are usually located by ...