20-Jan-2017, 22:56
(20-Jan-2017, 18:31)ragwo Wrote:(16-Dec-2016, 23:43)ragwo Wrote: Is the buzzing sound changing pitch or is it a continuous sound?The switch mode power supply in both my Gold Phantoms are making a sound almost like a radio picking up a cell phone signal. It's really faint and I can't hear it at 50 cm.
I stand corrected. The sound is clearly audible 4 meters away. Quite annoying.
Same for me. Not a problem when listening to music, but when no music is playing I hear it clearly in the entire room, also at 5m distance. In my case it is one of the Gold Phantoms that has this noise much louder. Measuring it closely (at 10 cm distance) a frequency analysis shows a 18dB peak at 1.2 kHz compared to the ambient noise. The other Gold has a about 50% higher noise than my Silver Phantom, which has a noise that I can berely hear when I put my ear close to the back of the Phantom. For me this noise sounds like it comes from the power transformer, maybe a inductor that resonates with the chopping frequency. As it is so much louder on one of the Gold Phantoms I consider to have it replaced.
