Computer Audio Asylum

Music servers and other computer based digital audio technologies.

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Original Message

my suggestion

Posted by Gordon Rankin on December 22, 2014 at 08:48:16:
Abe,

I would put a good low impedance cap across the battery. I use these types in my Crimson and they are a bit noisey. Then I would put a common mode choke then another cap right before the connector.

Really the big problem here is that the supply after it enters the computer is put into DCDC hell with probably 15 or so different power supplies. Core voltages down in the 0.9-1.1v range, then LV at 1.5-1.8, then IO at 3V3, then 5V for SATA drives (probably 4 of those), 5V for each USB, +12V for Firewire. Then a whole bunch more for display port, thunderbolt if you have it and other various peripherals.

Really we need an audiophile motherboard... oh I did do that ounce. way to expensive to make for DIY. People don't have any problem spending $1K on cables, but they would rather spend $70 on a motherboard. Oh well!

Thanks,
Gordon