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In Reply to: RE: Ok posted by E-Stat on March 17, 2017 at 12:37:06
"Somehow I'm thinking that deliberately overheating a device beyond its design criteria is not a good idea.": It'll overheat if you use 15V output transformer to regulate 7V. It won't overheat at all if you use 7V output transformer to regulate 7V and also sound much better too.
It's not the fault of raising transformer output power but fault in choosing improper output voltage. I can't see the reason why you should keep using way "overkill" and "least optimal" output voltage like that.
"Given it has 60 farads of storage, I don't share you concern."
: If device doesn't take more than 1A at all, that's OK. Capacitor bank design will work fine as long as device doesn't actually draw more than the limit.
"Perhaps I wasn't clear. Just to suggest such is unnecessary. We had a side topic going on about the possibility of at attached USB device drawing more current than the rendu is comfortable with, i.e. not burn itself up."
: I agree that wasn't clear and should be stated in other areas outside increasing transformer output power. Glad to see we're clear about this now.
"I'm thinking you don't understand how the two interact. The elegant design to which I previously referred is that the quality of energizer itself doesn't affect the resulting noise output by the supercaps feeding the device.
Sure, you could throw money away, but that would not be my choice."
: I'm thinking you don't understand at all about AC>DC and DC>DC approach for two step regulation. energized supply is switching PSU which is better than standard switching PSU found in computer market. OK it has low impedance capacitor and can send current fast with good switching design to work with capacitor bank in LPS-1 more effectively. I can see it's effective and very valuable for additional $15.
Sure it's better than cheap switching PSU and if believing that will not get any better with LPS-1 can give your peace of mind, OK. But this is not true for my customer's case using LPS-1 for audio works.
Sure it's your choice and your belief and I respect that. I hope you'll be happy with uRendu and LPS-1.
Regards,
Keetakawee
Edits: 03/17/17 03/17/17 03/17/17 03/17/17 03/17/17 03/17/17Follow Ups:
If device doesn't take more than 1A at all, that's OK.Perhaps you didn't note where I previously observed that while the nominal requirement is 1A, the device itself consumes about half that.
It goes back to your incomplete understanding about the device and its maker's year long vision working together with the uRendu.
Sure it's better than cheap switching PSU and if believing that will not get any better with LPS-1 can give your peace of mind, OK.
You're welcome to argue the merits of your claim with John Swenson since that is his assertion.
I hope you'll be happy with uRendu and LPS-1.
At the expense of confusing the issue with facts, I don't have one nor have a ready plan to sell the HDPlex and replace it with the LPS-1.
Which returns to exactly where we started. I remain curious as to Steve's observations as to how the two compare.
Good day - I'm ready to listen to some music!
Edits: 03/17/17
"Perhaps you didn't note where I previously observed that while the nominal requirement is 1A, the device itself consumes about half that.: And perhaps you didn't note where I previously mentioned that it's about reasoning based on specifications as I stated before here.
'I do realize and for me it's not safe since it can't even power JCAT USB Card with a single USB hard drive from Seagate (it's already low powered drive among 2.5 HDD). That's my opinion like some people who don't think bypassing fuse is OK but some do. If microRendu states it requires 1A continuous current, it'll be 2A linear power supply in my book for safety reasons.'
And not to mention additional power consumption for micro SD and some USB audio chipset that may draw current significantly like 300-500mA for playing hires format with uRendu drawing 1A in total.
"It does back to your incomplete understanding about the device and its maker's year long vision working together with the uRendu."
: You neglected the possibility of uRendu + USB input that may not work in some cases. I've been testing USB DACs in market for over 5 years before releasing Nimitra and I'm sure I haven't tested enough yet. This starts to get offensive now and I don't appreciate that.
"You're welcome to argue the merits of your claim with John Swenson since that is his assertion."
: Your assertion is 'Sure, you could throw money away, but that would not be my choice.' I have nothing to argued with $15 switching adapter from Mean Well that works good enough for its price. I recommend to compare between this Mean Well adaptor and HDPlex alone before using LPS-1 too. ;)
"At the expense of confusing the issue with facts, I don't have one nor have a ready plan to sell the HDPlex and replace it with the LPS-1.
Which returns to exactly where we started. I remain curious as to Steve's observations as to how the two compare.
Good day - I'm ready to listen to some music!"
: No wonder why you're so defensive on HDPlex. You're already using it. I see. I see. Here's my recommendation.
1. Purchase LPS-1 with energized supply
2. Configure HDPlex to send 7V output to LPS-1
3. Compare between HDPlex and energized supply
4. Sell HDPlex if you find no difference or prefer Energized supply
5. Consider Nikola as next upgrade path if you find HDPlex working better than Energized supply.Actually, you don't need to sell HDPlex since HDPlex -> LPS-1 is possible. If you're looking for reviews about HDPlex and Nikola LPS for future upgrades, you can find one here.
http://www.audiostream.com/content/exasound-audio-design-e32-dac
exaSound e32 DAC Review has both HDPlex and Nikola in tests.
Regards,
Keetakawee
Edits: 03/17/17 03/17/17 03/17/17 03/17/17 03/17/17
You're already using it
I chose from Sonore's recommended list as of last summer when I purchased the uRendu. BTW, you can learn a great deal about an inmate's system, room and musical tastes if you click on their moniker. Many like me post details and even pics of their systems.
Purchase LPS-1 with energized supply
Since you missed the first time around, I'll repeat:
I don't have any plan to replace the current unit because I am getting exceptionally good sound from my system. :)
"I chose from Sonore's recommended list as of last summer when I purchased the uRendu. BTW, you can learn a great deal about an inmate's system, room and musical tastes if you click on their moniker. Many like me post details and even pics of their systems."
: I see. Will look around later. Would be nice if there's audiophiles using good CD sources from Esoteric/Emm Labs/dCS/Wadia/Weiss too. I couldn't find matching power supply for Nimitra to recommend because I couldn't ones with designs I prefer. So, I ended up building Nikola myself so it can sound similar to highend CD transports I've known so far.
"Since you missed the first time around, I'll repeat:
I don't have any plan to replace the current unit because I am getting exceptionally good sound from my system. :)"
: Reading again. You're right. You used past tense and I didn't notice that before. I thought you're considering to upgrade with LPS-1.
Well, if you like current sound then it's OK. Be careful about using 7V from 15-20V too since it tends to be hotter on lower voltage, especially with 100VA transformer like that.
Regards,
Keetakawee
Be careful about using 7V from 15-20V too since it tends to be hotter on lower voltage, especially with 100VA transformer like that.
is unwarranted.
Using my digital infrared thermometer, the case and heat sink temperature measure 71.2 and 71.4 degrees F, respectively. By comparison, the front panel of the preamp which isn't even turned on is 69 degrees which happens to be room temperature. :)
I see. That's good then. Do you also use air conditioner? In Thailand, weather is very hot so I'll need to be extra careful about temperature.
Regards,
Keetakawee
Do you also use air conditioner?
When necessary. I live in the southern US where it does tend to be both hot and humid during the spring and summer. I get vastly more heat, however, from the sixteen 6550C output tubes than a power supply barely operating above idle while doing its job.
Then it's time to jump in the pool!
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