Hello all, I'm doing a complete teardown and rebuild of my 16 year old Zero One Audio Mercury CD/HD player. This was precipitated by the failure of the CD drive, replacement of which means I had to disassemble the entire unit; while I'm in there I'm recapping all the boards, replacing the HDD, and adding some ferrites to key places for RF mitigation. The motherboard uses a Celeron processor running Linux, and the unit has always had very good sound quality.
Although it hasn't failed, the 16 year old switching ATX power supply (Nexus NX-3000) is probably a bit long in the tooth, and I'm wondering if there is currently a lower-EMI/RF, less noisy ATX supply I could swap in. Attached is a picture of the supply showing it's specs. Back in the early 2000s this was a highly-regarded supply, but time marches on and I'd like to know if there is a more modern supply that would be an upgrade. I want to stick with switching as I do not have room for a massive linear supply.
Anyone had good luck with a current replacement?
Although it hasn't failed, the 16 year old switching ATX power supply (Nexus NX-3000) is probably a bit long in the tooth, and I'm wondering if there is currently a lower-EMI/RF, less noisy ATX supply I could swap in. Attached is a picture of the supply showing it's specs. Back in the early 2000s this was a highly-regarded supply, but time marches on and I'd like to know if there is a more modern supply that would be an upgrade. I want to stick with switching as I do not have room for a massive linear supply.
Anyone had good luck with a current replacement?
Attachments
I can't speak for this case specifically, but the BeQuiet Pure Power 11 FM series are excellent both for EMI, acoustical noise and supply stability (ripple and spikes at <10mV over the entire load range). FM is "fully modular", the "non-FM" series is slightly cheaper but should AFAIK be the same internals but with all standard connections as hard-soldered pigtails.
Are you sure about that ripple spec? I couldn't find that in the Pure Power 11 literature but the more expensive Straight Power 11 units only specify 40-80mV ripple.
I never measured them myself, none of my builds with them have been "straight audio" builds, just desktops... But:
https://www.eteknix.com/be-quiet-pure-power-11-fm-650w-power-supply-review/6/
Thanks for that link. Looks very clean!
It's approximately 10X lower ripple than the NX-3000! Sounds like an upgrade to me...
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