In the meanwhile I’ve swapped the cables between CD player/preamp and preamp/power amp. Now I have a balanced connection between CD player and preamp. Symmetrical input # 1 instead of asymmetrical input # 2. Things got worse. With this connection the cap light comes on much more than before, practically it lights on, remains on for 15 seconds (it’s the minimum time of activity that the manufacturer indicates in the manual) then goes off for a couple of seconds then it turns on again and so on... I have used the same song that with the unbalanced connection made the cap light comes on one time only at 5’17”... Pretty annoying.
Soulution preamp DC-offset protection
Good morning,
I've just bought a used but mint Soulution 721 preamp. It has replaced a Spectral DMC30SS Series 2. Apart from the sonic differences between the two, I'd like to know more about the DC-offset protection that the Soulution preamps have. Soulution claims that the input signal is permanently monitored for DC-components and at a level > 15 mV a high-class coupling capacitor is switched into the signal path. If DC-offset has decreased, the coupling capacitor is removed automatically after 15 seconds. During the first listening hours, I noticed that this capacitor switched on at least 5/6 times (a capacitor symbol appears in the display and after 15 seconds, when it's removed you hear a mechanical "click" sound). I'm wondering if this is normal or maybe it's a symptom that requires further investigation. I read that the DC-offset could came from the recordings itself and, actually, if I play the same CD and the same song, the DC-offset protection circuit of the Soulution switches on every time in the same point. Maybe it just something I did not realize before because the Spectral preamp showed me nothing of all this. It could be something like "if you don't see... you don't worry". Can someone help me to understand if I have to be worried or not? Thanks a lot!!
I've just bought a used but mint Soulution 721 preamp. It has replaced a Spectral DMC30SS Series 2. Apart from the sonic differences between the two, I'd like to know more about the DC-offset protection that the Soulution preamps have. Soulution claims that the input signal is permanently monitored for DC-components and at a level > 15 mV a high-class coupling capacitor is switched into the signal path. If DC-offset has decreased, the coupling capacitor is removed automatically after 15 seconds. During the first listening hours, I noticed that this capacitor switched on at least 5/6 times (a capacitor symbol appears in the display and after 15 seconds, when it's removed you hear a mechanical "click" sound). I'm wondering if this is normal or maybe it's a symptom that requires further investigation. I read that the DC-offset could came from the recordings itself and, actually, if I play the same CD and the same song, the DC-offset protection circuit of the Soulution switches on every time in the same point. Maybe it just something I did not realize before because the Spectral preamp showed me nothing of all this. It could be something like "if you don't see... you don't worry". Can someone help me to understand if I have to be worried or not? Thanks a lot!!
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- 20 posts total
- 20 posts total