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HDPlex Linear Power Supply is no Firewall
70.181.188.112 |
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Posted on December 6, 2014 at 07:14:27 | ||
Posts: 6580
Location: So. CA Joined: October 20, 2002 |
I noticed this comment form Chris at CA concerning the HDPlex used in his new computer design: "The power supply I’m using for the CAPS v4 Pipeline server is an HDPlex Linear Power Supply ($358) in combination with the HDPlex 250W Internal DC-ATX PSU ($85). Once the power hits the motherboard there isn’t much any of us can do to clean it up. However, using a linear supply for the main power and the USB card power we can effectively create a barrier of clean power around the server. The linear supply won’t feed the typical switching noise back into the power line and on to the audio components and the same linear supply feeding the USB card will make sure the direct connection to the audio system is as clean as possible. In other words, it’s like a moat of clean power surrounding the dirty PC power." While the HDPlex will block some noise, it is not totally effective in blocking high frequency digital noise. It does look like Chris did a very nice job on his new computer design and should be commended. |
RE: HDPlex Linear Power Supply is no Firewall, posted on December 6, 2014 at 08:13:54 | |
Posts: 6580
Location: So. CA Joined: October 20, 2002 |
Thanks for your excellent insight on this issue Thorsten. |
RE: HDPlex Linear Power Supply is no Firewall, posted on December 6, 2014 at 08:30:38 | |
Posts: 2424
Joined: July 11, 2007 |
One day people will realize that e.g. a Raspberry Pi just needs a simple good quality and easy to manage 5V supply. Hook the RPI up to an Anker 10000mAh battery for the begining. That'll do. That'll beat any Christ Conneker supply or Super High End power filter out there by a large margin @ a fragment of cost for computer and supply (60$ for both). Your data you source over the network. Remember: You just need to get some bits out of a computer/transport. Even my Raspberry Pi currently uses 0.3% of its processing power for streaming the data towards the DAC. A PC is a total overkill!!! I can promise you, that any highly complex PC, with highly complex power supplies and 100.000 sources of distortions, incl. OSses which get stripped down to the bones, OSes which never meant to be driven that way is the worst way to go... Enjoy. ----------------------------------------------------------------- blog latest >> The Audio Streaming Series - tuning kit pCP |
RE: HDPlex Linear Power Supply is no Firewall, posted on December 6, 2014 at 10:43:43 | |
Posts: 2424
Joined: July 11, 2007 |
Yep. Youre right. How many switchers do you think you'll find inside a PC? You won't face any groundloops. The Anker is for sure not the best solution. At 25$ it's IMO a good start. Cheers ----------------------------------------------------------------- blog latest >> The Audio Streaming Series - tuning kit pCP |
Like n/t, posted on December 6, 2014 at 12:01:09 | |
Posts: 2912
Location: Des Moines, WA Joined: August 22, 2006 |
RPI also needs, posted on December 6, 2014 at 22:50:43 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
a clock mod first. |
RE: Very cool nt, posted on December 7, 2014 at 00:13:44 | |
Posts: 2667
Location: NY Joined: July 31, 2000 |
nt |
Have you ever, posted on December 7, 2014 at 01:19:24 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
opened one of these cut price batteries to have a look inside? |
Don't be stupid, posted on December 7, 2014 at 01:21:29 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
it is an aged power supply |
'tis the crux of the matter..., posted on December 7, 2014 at 05:32:49 | |
Posts: 4209
Location: Somewhere nice on planet dirt Joined: September 25, 1999 |
Hi, > If one of the goals is to keep EMI/RFI out of the mains, > a good power conditioner can be a better choice. Yes, they key is to understand the requirements of the situation to attain a reliable improvement and to then apply the most (cost) efficient way to answer the requirements. And for the goal you stated your suggested remedy is indeed the appropriate technology, though some small extra modifications to the SMPS to reduce problems at the source also may be a good choice for those who can apply them. Those who refuse to gain sufficient understanding of the matter and keep insisting that there is no need to understand and know what is going on and that following folk tales is a more reliable way to get improvement are like the blind men of Indoostan and at least as argumentative. Thor At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need? |
RE: Have you ever, posted on December 7, 2014 at 08:45:38 | |
Posts: 2424
Joined: July 11, 2007 |
No.I measured what's coming out. EasyAccs are awful.Anker was OK. I usally add some buffercaps and filtercaps. ----------------------------------------------------------------- blog latest >> The Audio Streaming Series - tuning kit pCP |
RE: Have you ever-some , posted on December 7, 2014 at 09:18:19 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
are a disgusting mess inside. There is no workmanship of any kind. |
I use mains isolating transformers., posted on December 7, 2014 at 11:00:54 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
nt |
Here's traces that I have found:, posted on December 8, 2014 at 10:49:48 | |
Posts: 7181
Location: NJ Joined: September 20, 2006 |
Of course, the advice wasn't given to me, specifically.
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RE: There is no point indulging in, posted on December 8, 2014 at 18:58:23 | |
Posts: 2667
Location: NY Joined: July 31, 2000 |
RE: Insight-when-may be the difference is, posted on December 8, 2014 at 20:00:09 | |
Posts: 2667
Location: NY Joined: July 31, 2000 |
What a waste of time. smh... |
Waste of time, posted on December 8, 2014 at 21:48:05 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
quite right. No point in responding to pointless reinterations. |
Re: "we are now in a position to include the Euro PSU", posted on December 9, 2014 at 03:02:51 | |
Posts: 4209
Location: Somewhere nice on planet dirt Joined: September 25, 1999 |
Hi, > It seems that you don't know what your distributor is saying. I know what he is saying. And it does not say "banned". It says not approved. To have an item approved might for example entail having to submit samples for testing and to pay the required fees, which can be quite exorbitant. They may have to take out liability insurance and comply with many other strictures that have little to do with safety and much with making trade and business more difficult and more of an income source for governments. We leave these things up to the distributors. FWIW, our Korean Distributor applied for and got all the approvals needed for south korea, which are both expensive and extremely strict (some of strictest around) in order to raise the barrier for imported goods. And as you seem to know all so well (and so much better than I do) what the distributor says and what our distributors are doing, I am greatly surprised you have missed this part: We supply an external PSU that has been in use and approved for many years not the one illustrated above. Requests have been made to sample the IFI Euro or US PSU and we are now in a position to include the Euro PSU on the basis of it’s for “evaluation purposes only” and those that use, do so on this basis only. Thor At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need? |
advantage of ECC memory , posted on December 9, 2014 at 04:58:42 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
cheap especially used. 1/2 to 1/3 of non ecc new price |
RE: HDPlex Linear Power Supply is no Firewall, posted on December 9, 2014 at 05:00:36 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
not wrt prices on eBay. Much cheaper and worth a try |
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