Jonathan
pfm Member
My (new to me) ESLs just started making a funny whistling noise - quite low level but disconcerting. I thought it was the Qudos amplifier having teething problems so i turned it off ... but NOPE. still there. It sounds a fair bit like a tea kettle or air escaping through a leak in a car door though fairly quiet ... but certainly enough to notice from across the room. any hints?