|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
CORRECT AC POLARITY
June 17, 2009 — puristaudio System set-up
"I wanted to talk about a tweak that costs little or nothing to do, while having the potential of paying big dividends in terms of sonic improvement. It involves a ...
|
|
I think lower chassis voltage does not give better sound in all audio systems.I do not why but Some audio systems have better sound with higher chassis voltage . I lost my sound for more than six month only for adjusting ac polarity for lower chassis...
|
|
HiI'm now at a stage of building the chassis for full range Milq.It will be a two chassis,one power supply and one signal,very similar to Romys super Milq layout.The two will be connected by two separate cables AC and DC.A few questions please1.How a...
|
|
If the idea is just to listen and not make any sort of manipulation, you may want to give a try to RuneAudio or Volumia or AP Linux, they are free anyway:http://www.runeaudio.com/https://volumio.org/http://www.ap-linux.com/Seasonic have fanless PSU, ...
|
|
You can run RuneAudio on anything Linux. You would just basically need to get the config files and put it on the right place. To run the nice Rune interface, what basically is a php website, you would just need to install some very light webserver ...
|
|
I should add that disconnecting the "ground" wire as mentioned above will most likely not solve the issue.
It will likely also be necessary to ground the chassis of the components directly (to a nearby water pipe for example).
When grounding t...
|
|
[quote user="Stitch"]Even when you go for a 30K Speaker and you have knowledge about chassis and their pricing, you will discover, they are rarely more than 160 $/piece.And they sound like that. But they eye is cheated with an excellent high gloss pa...
|
|
If you ground one pp2000 to the wall, then ground the chassis of the other two or units to that one, then the noise should flow through the chassis to the single ground and not back to the hots. Then all units should have clean current from the hot....
|
|
Audio people frequently go astray in their thinking and actions and this creates a good breeding ground for all possible audio sale opportunists. I would like to explore one moment that has not a lot of public attention and to look at the moment slig...
|
|
[quote user="DA"]1.How and where to make ground connection to the chassis (signal and power supply and between them)2.What are the test jacks near the 6c33c for (bais..)? In the photos there seems to be a resistor connected to one test jackand ground...
|
|
Man, I really wish you could just enjoy this thing!Difficult even to imagine that NOTHING in your apartment is grounded. The only way I know of to get away with "no ground" is with batteries, and in my own case I still bleed the IC shields/chassis t...
|
|
[quote user="N-set"]Anthony, I'm sure you realize that air springs and bearings can only isolate from the structure born vibrations. Placing the tubes so close to the speakers you give them a great chance to catch strong airborne vibrations. Or will ...
|
|
I would place my bet on common mode noise being carried on the safety ground long before blaming RFThe ground on the amp has been tried both lifted and present. I have reversed the AC cord using a cheater plug without effect. I have tried grounding t...
|
|
Well, at the end of the day it is a personal choice. I listened to that WE-Demo at High End 2012 and beside all pros /cons there was a situation which was very unique: The room was always crowded, more smiling faces than in other rooms....of course y...
|
|
Thanks Romy!I went with two tiers as I do not have much space between the speakers and the side walls as I have a 2.5M cabinet on the front wall.I named my amp Koshka as I always felt Koshka made a contribution to the development of the Melquiades an...
|
|
I turned the thing on lately. Although the channels do not sound right at this point but there are some moments that I do live very much. I like the mechanical noise that this version of Milq radiates.
The former version had still chassis on PS side...
|
|
...I hope y'all are attending to AC polarity alignment, else many of your decisions may be erroneous. I've written so much about this perfectly audible phenomenon that I don't feel like doing it any more, so I point you to an excellent comprehensive ...
|
|
[quote user="steverino"] Sorry for the potentially ignorant question since I do not yet own one. Can't you remove the battery pack from the unit and see what the sound is like? According to the Pure Power web site the battery packs are optional so I ...
|
|
Ok, you are getting somewhere. I am not sure why I used the 100R, 50R and 22R resistors. It is good idea in some cased to list the potential of some circuits but it need to be used ONLY what it necessary. Do not forget that in your case you have 5 ch...
|
|
it might be tricky for this (as it is) to work well as a phono stage! It also seems rather involved for a line stage too. (too much gain?) The chassis does look substantial though. Presumably the valves are pcb mounted inside? What will y...
|
|
After spending considerable amount on the hum problem, one way to fix it is tho remove transformer and place it in a different chassis, the noise level will improve more than 15 db to -74db. But that cause too much hassle, so I got it improved to 62d...
|
|
JJ,
yes, I got Hal-O dampers a few years ago and I do use them but it would require more say then just “I use” them.
I have them for a long time. I initially bought then to use with 7788 tubes that I am employing as an input tubes in my phonocorr...
|
|
[quote user="Jordi"] If I build them ... I'm going to use different cases. Man, the one's shown are U-G-L-Y. [/quote]
To my view the chassis for the full-range Melquiades is not ugly, in fact I do appreciate the design immensely, functionally a...
|
|
Charles, you would not need a fan for a single channel full-range Melquiades. One 6C33C, and particularly in the way how you mount it, will not overhear this chassis. I very much like how you separated the amp section from PS and from the entir...
|
|
Sneaking up on the AC cord for the K&K, I recently added a close approximation of the power cords I made for the ML2s. These cords use 3X 12 ga. copper magnet wires tightly sleeved with poly tubing and braided, with Onyx pure copper pl...
|
|
I woke up this morning to have the brightest thought that my DHT issues are probably caused by how I have wired up the filament transformers. When I ordered all the transformers for this project I gave Lucas of Black Art Automation the design brief ...
|
|
I was going to ask you about that funny looking damping material. Then you explained it at bottom of post. Very clever to use mouse pads! Lately I've been using cork & buna rubber sheets from McMaster-Carr. Seems to work m...
|
|
Romy, apologies for being unclear: the amp is not yet built: this is just a spare chassis I am offering for others who may wish to build it too. Inputs and outputs have not yet been added to the chassis. I therefore cannot comment on the sound yet bu...
|
|
The grounding I have employed is a mixture of a "local star" and GND plane (I've obviously copied it from the Cat).I did pay a lot of attention not to have loops. Here is my grounding scheme. I wonder if there are any obvious errors?There is a switch...
|
|
Anthony, I do not remember
details now but the basic was following. I selected on PS and Control chassis single
locations that I considered the main grounding points. Within PS chassis if was
a negative terminal of the last filtering cap and withi...
|
|
|
|
|
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: |
42,924,397 |
|
|
|
|
|
|