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Signalyst DSC1
Signalyst DSC1
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Old Yesterday, 05:27 PM   #971
ppy is offline ppy  Russian Federation
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Quote:
Originally Posted by barrows View Post
i would think resistor sound quality would matter.
Just thinking out loud here and wondering. I know somewhere on this thread I did see some measurements which appeared to show higher precision resistors giving better measured performance... Thoughts?
High precision resistors are required in the DAC R2R type.
DSC uses the Rectangular Window FIR Filters. Therefore, there is no need for very high precision resistors.
According to my measurements, there is no difference between 1% and 0.1% resistors.

Last edited by ppy; Yesterday at 05:36 PM.
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Old Yesterday, 08:36 PM   #972
mcluxun is offline mcluxun  United States
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Originally Posted by Vit123 View Post
How are you going to cope with the cooling? Big radiator?
I've tried active cooling with one 12cm Noctua fan and got stable 38 - 40 C (3 Reflector D, 2Ohm, 2Ohm, 1Ohm). But there were small chasis vibrations that I did not like.
How do you handle grounding among your PSUs? I'm guessing you are using 1 Reflector-D per channel and 1 for the digital source?
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Old Yesterday, 10:32 PM   #973
barrows is offline barrows
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Default Yes...

Quote:
Originally Posted by ppy View Post
High precision resistors are required in the DAC R2R type.
DSC uses the Rectangular Window FIR Filters. Therefore, there is no need for very high precision resistors.
According to my measurements, there is no difference between 1% and 0.1% resistors.
Pavel, I am aware that super precision resistors are not required for DSC-1 technical performance vs. PCM/R2R DACs... I am curious though as to subjective sound quality. At some point someone will build a DSC style DAC and use Z-foils just to see what the sound quality might be.
Just curious...
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Old Today, 09:20 AM   #974
Vit123 is offline Vit123  Russian Federation
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Signalyst DSC1
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Originally Posted by mcluxun View Post
How do you handle grounding among your PSUs? I'm guessing you are using 1 Reflector-D per channel and 1 for the digital source?
I'am using Reflector D for another DAC (Soekris dam1121 - Left, Right output line power, Didital line power), not for DSC. Reflector's earth connected to dam1121 earth. All of them are placed on nylon spacers.

But I have 50Hz harmonics with Reflector and can't eliminate them (have look at Reflektor-D builds)
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