Optoma UHZ65LV, Yamaha RX3070, Quadral Titan MkV, Technics SE-A1, Technis SE-A7000, Yamaha MX-10000
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36 Posts
Hello,
I have couple of questions about amplifier noise. I have old but high end class A Technics SE-A5 power amp and SU-A6 MK2 pre amp, connected with analog shielded cables to my HTPC Asus Xonar ST sound card. My speakers are quite good high end Quadral Wotan MkV.
My pre amp volume level is set to about 1/4 of its maximum scale all the time and I am controling the volume of music on the PC.
Thing is, that when I put my ear VERY CLOSE to the speakers, I hear some quiet noise in the high frequency range. Its not audible from 1m or more, so its very quiet, but its there. When I turn volume on the pre amp to the max while not playing music, the noise is louder and I also could hear some RFI/EMI interferences. They are very quiet, but audible. This is of course extreme situation, cause if I would try to play some music at this volume level, it would probably destroyed the building
But question is: is this normal with all the amplifiers? Is there allways some audible noise or interferences from up close when the volume is at high levels, or is it because something is wrong.
My sound card has S/N ratio over 125db and my power amp as well.
Its not a problem when listening to music, I am just curious if its normal even with todays high end power amps, or if some internal parts in my amp need replacement because they are very old.
Thanks to anyone for answers.
I have couple of questions about amplifier noise. I have old but high end class A Technics SE-A5 power amp and SU-A6 MK2 pre amp, connected with analog shielded cables to my HTPC Asus Xonar ST sound card. My speakers are quite good high end Quadral Wotan MkV.
My pre amp volume level is set to about 1/4 of its maximum scale all the time and I am controling the volume of music on the PC.
Thing is, that when I put my ear VERY CLOSE to the speakers, I hear some quiet noise in the high frequency range. Its not audible from 1m or more, so its very quiet, but its there. When I turn volume on the pre amp to the max while not playing music, the noise is louder and I also could hear some RFI/EMI interferences. They are very quiet, but audible. This is of course extreme situation, cause if I would try to play some music at this volume level, it would probably destroyed the building

But question is: is this normal with all the amplifiers? Is there allways some audible noise or interferences from up close when the volume is at high levels, or is it because something is wrong.
My sound card has S/N ratio over 125db and my power amp as well.
Its not a problem when listening to music, I am just curious if its normal even with todays high end power amps, or if some internal parts in my amp need replacement because they are very old.
Thanks to anyone for answers.