|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
[quote user="Romy the Cat"]So, what the concussion is. It is known that PP2000, as any switching devise, inject a lot of noise into power line from where it sources power. Apparently the PP2000 own filtration can’t handle the noise from the second PP...
|
|
As I've said a couple of months ago, I got my APS 700i regenerator a few days ago... I didn't "audio-test" it so far but there will be plenty of time for that later. I've fired it up to see if it's workong properly and everything looks good so far. T...
|
|
Again, for anyone who may not know (and not to torture or talk down to those who do know):US electrical systems (along with most others I am aware of) have by code but one main ground that is shared by the "neutral"/return wire (white, hereabout...
|
|
[quote user="Romy the Cat"] There was a moment once want I drove one of my Milq from Purepower 2000 and with all perfect operation parameters on Milq and on Purepower the Milq’s transformer were hissing like crazy. [/quote]
[quote user="Romy the Cat...
|
|
Are you saying that this behavior is behavior is characteristic for dried out capacitors? I need to admit that I know very little about solid state electronics and I have no idea how it ages. My amplifiers are 40 years old and certainly it would be c...
|
|
[quote user="RonyWeissman"]Romy, would you say that placette is especially sensitive to electricity to function at it's best(sensitive in relation to other equipment I mean)? My unit is 110v and I am in 220v world, so I am using a step-down trans...
|
|
Yep, I am frustrated with APS, all right, since they seem to be in a perfect position to actually get this under control, once and for all; yet... Meanwhile, I have been through enough of the "money back guarantees" that I no longer relish...
|
|
Very interesting.Romy, this one looks "better", but the scope traces and noise specs you cite still make me wonder if APS actually have static design/QC criteria, because it looks like they they just work on something for a while, then start sel...
|
|
[quote user="Romy the Cat"]Instead of simply fixing the PP2000 you decided to try isolation transformer way.[/quote] With all due respect Romy, you of all people know that applying the term "simply fixing" to the PP2000 is ridiculous. I don't have th...
|
|
Romy,I have reported the issues I have with my PP here, though that was quite a while back. I do not have anything as severe as you suggest: I do NOT have ANY transient issue, meaning I cannot hear any click or pop or whatever when an external device...
|
|
I've had a new PurePower APS 2000+ unit for just over 5 months and recently the battery will not charge. After Damian of PurePowerAPS helped diagnose the problem they said they would do a call pick-up to send back to the factory in Canada for rep...
|
|
[quote user="drdna"] While it is true that changes are constantly being made probably from unit to unit in production at APS, the major design change occurred with the adoption of Class D circuitry in the PP Plus series.I suspect that the problems ar...
|
|
Yes, "nothing special" is exactly right, and cheap - £500 delivered in the UK. But the point is that there can be very little that is special about such devices, *other* than what these people talk about, which is audible noise from fans and ironware...
|
|
I would say that this is not an answer to the question. It does not really matter what the problem was with the PP2000+ unit in question. This is an irrelevant conclusion that seeks to divert attention from the primary issue. What is important is the...
|
|
In impatient, ill-advised. manic efforts to "compensate" for the EFFECTS of bad power I have swapped ICs, used different output taps, re-configured grounds, swapped tubes, re-positioned speakers, adjusted VTA, messed with my BR ports. And ...
|
|
[quote user="Romy the Cat"] In the 2008 I have a few immediate goals:
1) Finalize the 6-chennals version of Super Melquiades and integrate it with Macondo
2) Finalize the “End of Life" Phonostage:
3) ...
|
|
[quote user="Antonio J."] The electrical supply in my building (I live in an 11th story of a 13th stories building) is very bad, as is in the whole area, which in spite of being residential, has 2 big hospitals around that probably have huge consumpt...
|
|
We are presently in a situation where we realize that the sound we get from our hi-fis is influenced by the electricity the systems are fed. There has been a lot of hypothesizing and voodoo in coming up with "solutions" for the various quantifi...
|
|
All switch mode power supplies that receive a CE, UL or CSA approval have complete isolation from the wall voltage, across the dielectric barriers of a transformer, from primaryto secondary.The isolation of noise occurs because the incoming wall ...
|
|
2010 was marked by the best music sessions I have had in my life. Changes to the K&K and iDAT DAC that I have chronicled were challenging to integrate but ultimately very worthwhile, and re-working the DEBZ crossovers has gotten me, I think, abo...
|
|
Looking at Paul keep barking at the APS "success" I become to think what would constitute success in electricity battle. From one side the sonic result that PP2000 demonstrates is an indication that he battle is over. Is it? Sure the PP2000 as a devi...
|
|
One of the most pleasant things about the Purepower 2000 (PP2000) that it in contrary to any other power devise I hear it has very limited if any impact to the original sound of a playback. Somehow the PP2000 surgically removes all negative manifesta...
|
|
I agree with your observations, and my own misgivings swirl around exactly the points you raise. In addition, I have tried battery phono stage and all it had to offer was quieter "background", everything else was worse, despite the wild and exo...
|
|
Joaco, all this will probably be moved back to the "Electricity" thread, which is not really an APS Forum, as it has appeared for a while, now.No one supposes that other alternatives do not exist; it is rather just a case where everthing has not yet ...
|
|
Joaco, thanks for sharing. We still do not know what make those units to sound to sound good, so in a way we are shooting in dark. I have no doubts that there is great number of commercial units out there, similar to APS PurePower, which might be su...
|
|
Adrian i have been dropping in on occasion to Romys site due to its down to earth style. Being a common blue collar workerbe i can appreciate a good down to earth explanation. I came back today after doing a google of APS 2000. I may have been misund...
|
|
I did detect something not good. Take a look.
This is Avicenna in buffering mode, driving 1340W. As you can see at the very top of wave there is a small “nervousness”. Not the same type that APS had but it is there. It stats approximately at 1070W...
|
|
Hhhhhhm, I am not sure that we need to directly associate the quality of electricity problems with benefits of LC filtration, particularly when SS rectification is used. The wider question is very interesting: if we need to make any design provisions...
|
|
As I said in my post above the PurePower has well-defined double-action in its contribution to Sound of playback
The first action is process of power regeneration and getting rid of negative influences of bad electricity. Let from now and on to call...
|
|
Spoke last night with PurePower people and have good news.
First, after the “agonizing research efforts” (satire) the APS have discovered that source of fuzziness that I reported above and claim that they have a very simple fix that would not requir...
|
|
|
|
|
All context of this site except the Forum's posts
Copyright © Roman Bessnow 2004-2024
All messages within the Site’s Forum Copyright © by
authors of the posts
|
|
Last 24-hours posts: |
0 |
|
 |
|
|
Total human visitors: |
43,018,964 |
|
|
|
|
|
|