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Cable Asylum Interconnects, speaker wire, power cords. Ask the Cable Guys. |
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In Reply to: Re: Same Old Problems, Different solutions, etc. posted by Cleop on March 1, 2004 at 10:23:17:
Switching power supplies depend primarily on the output capacitors to keep the noise from the switching events from getting to the connected circuits, but they are also heavily depednat on the quality of the PS layout the grounding, and any shielding of various cicuit sections.The cheap and poorly designed ones will have lots of noise riding on the PS rails and ground (which the linear PS CDPs did not have too much of), but should be a little better on load droop and transient voltage droop than a linear supply, due to the presence of the output capacitors. Again, the layout of the PS circuit and the rails/ground will have a large influence on this.
The well designed ones could in theory, come out better than most linear PS, but they will still not be immune to LIM, as this can occur within the DAC itself (even when fed a "perfect" PS rail and ground), as well as due to the PS rails and ground always being imperfect in delivering the voltages and reference point.
For comments on a cheap DVD player with a decent PS, see:
http://www.audioasylum.com/audio/digital/messages/81114.htmlNote that he did not look at the ground situation as such, and it may have been contaminated with PS noise or such.
Jon Risch
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Follow Ups
- Re: Same Old Problems, Different solutions, etc. - Jon Risch 15:37:11 03/01/04 (0)
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