Home Forums Consumer Electronics Very noisy ICEpower 50ASX2 Reply To: RE: Very noisy ICEpower 50ASX2

  • mikey

    Member
    November 6, 2021 at 10:18 am

    @123toid

    Well, my curiosity got the better of me so I opened the case. You wouldn’t believe it but when I got the case open I found that it was grounded! I also tested that all the inputs and outputs were isolated from the case correctly and got impedances of 100K – 1Mohm.

    I disconnected the GND wire and the buzz disappeared – almost – completely.

    I’ve put up a new video to show the effect. It was quite dramatic. There is still a slight hiss but it is inaudible from more than 30cm away from the speaker and could be caused by all the fluorescent lights in my workshop and a noisy mains power source.

    I’m not sure if this indicates that the power points in my house aren’t grounded, or if there is another problem somewhere, but I am very happy with the board as it is.

    I bought this as a cheap option, conveniently preassembled, to see if it would be worth buying more expensive original boards from a reliable supplier, and if the ‘real’ ICEpower boards are even better sounding than this clone then I am very keen to get my hands on some!

    Thanks for your help with this! Much appreciated.