17-May-2015, 17:26
Ref my post #345. Tried again 8.0.0 + configurator with WiFi input deactivated. Still same problem of heart-beat like low-frequency-noise when the volume (no music signal) goes up after +10dB.
So reloaded 7.1.3 with old configurator file (including WiFi input activated), turned up the volume to MAX +30dB, no such low-frequency-noise for a while BUT suddenly a very loud noise came out and I had to turn off the machine immediately.
Lastly reloaded my 7.1.1 with old configurator file (also the WiFi input activated), again went up to +30dB, very quiet. Not dared to test too long time. This time, luckily, I did not experience the sudden very loud noise screaming.
I thought the cause of the heart-beat like low-frequency noise and the very sudden loud noise might be that I plugged my D200 directly to the wall socket since I thought the D200 sounds better when plug direct to the wall.
So reloaded 7.1.3 with old configurator file (including WiFi input activated), turned up the volume to MAX +30dB, no such low-frequency-noise for a while BUT suddenly a very loud noise came out and I had to turn off the machine immediately.
Lastly reloaded my 7.1.1 with old configurator file (also the WiFi input activated), again went up to +30dB, very quiet. Not dared to test too long time. This time, luckily, I did not experience the sudden very loud noise screaming.
I thought the cause of the heart-beat like low-frequency noise and the very sudden loud noise might be that I plugged my D200 directly to the wall socket since I thought the D200 sounds better when plug direct to the wall.