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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi
I’m planning to build the Melquiades. Owning something that is better then a Lamm is definitely something for me.
Having 220V 50Hz. What changes are necessary in schematic?
Bigger PSU caps, inductors?...
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Romy,Thanks for your thoughts.Very interesting your idea to take 110v from half the secondary straight off the pole... I am trying to confirm with the electric company that this might be possible... Otherwise I've got some climbing gear&nbs...
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I’ve been thinking about all this electricity stuff…
I’ve stopped using all power conditioning devices since Bush got re-elected, and I consequently left the country to start a new life in the land of 220v/50Hz (this BTW, is not an exaggeration).
...
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[quote user="Lx_"] Another example of cannot-measure-it-but-can-hear-it? [/quote]Oh, yes, there is plenty of it in the audio electricity world. It is not that “cannot-measure”, everything might be measured the problem is that we have no idea wha...
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There are some information here and here, particularly among those who knows, how the misbalance of the power polarity between the components of your systems can screw sound. Certainly the auditable benefits are very substantial and anyone who power ...
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I just bought a pair of Lamm ML2`s. I live in Norway, so I have to convert the amps from 110v to 220v or 240v. The offical voltage in Norway is 230v, but it varies a lot. Does anybody know how to convert the amps?. The should be a wheel to select the...
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hmmm sorry Romy for the lost of your pp2000 ....I would like to share one opinion from a technician that lives in Japan and lived in Chile . We were discussing the issues of electricity and he said "Lines in Chile are poor quiality , cables are too t...
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[quote user="joaco"]hmmm sorry Romy for the lost of your pp2000 ....I would like to share one opinion from a technician that lives in Japan and lived in Chile . We were discussing the issues of electricity and he said "Lines in Chile are poor quialit...
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[quote user="decoud"] In the EU it is easy…[/quote]
Well, I would like to pitch
one more complication that you EU folks might experience. I have a suspicion that
to swing 220V is more complicated using the class D generation then 110V. I
mean ...
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[quote user="Romy the Cat"]The point that you have EU (240V version) is well taken.... [/quote]LX, I wonder if in context of dimmer and PurePower regenerators the voltage of a given country make any difference. PurePower is essentially a power amplif...
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The Purepower state at their site that efficiency of the unit is 89-92% depending on load. I presume that they meant the power factor correction that need to be taking to the consideration. In my case my two 6-ch Melquiades run from two new PP2000. M...
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Lbjefferies7 wrote : "...My curiosity peaked with Jessie Dazzle’s last few posts. I realized that, in France, he receives 220v, 50 Hz power... I was wondering if, at 240V, some of the fluctuations between good and bad electricity could be allev...
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[quote user="Romy the Cat"]Ok, I got my two more PP2000, not I have 3 all together and I need to find how to use them. My little celebratory mood with PP2000 is much shorn live and my old PP2000 flying back today to Canada for fixing the problem with...
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I have a suitable NOS surplus power transformer from OSborne; 110/220V primary and 2825V-2000V-0-2000V-2850V at 0.5A secondary.Should be a good base for a bass SET. Not, that I want to encourage anybody to undertake that project. ...
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[quote user="manisandher"] So why do I now prefer the sound with the PP2000 as opposed to last year when I stopped using it? I think it's because last year I never plugged all the components into it. Playing around with various configurations the...
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Decoud, I posted something about Powerinspired a year or two ago. The problem is that all but their smallest units has a fan apparently so it might require an out of room location. Also they only have 220v models . I sent them an email about a 110-12...
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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 transformer on the unit. I have had...
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2) OUTPUT STUDY
I decided to check what my PP outputs. After some listening my HF is harsher than I would like plus on older equipment (like Sansui TUX1) I can sometimes hear a gentle transformer whistling, suggesting high harmon...
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[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...
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Hi, Global.
Leaving aside the unnecessary to be called notion of Melquiades vs. Lamm I would return to the essence of the thread: what changes are necessary in schematic if it goes for 220V. I do not think that any changes would be necessary. All tr...
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My project to add 3 one-stages channels to Super Melquiades look like progressing (it means I will have the new 15,5:1output transformers very soon) and in context of upcoming changes and, after long consideration and some tests, I desire...
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Well,
The most miserable things about electricity that you never know what to do. I had in past different filters and mny imaginable power gismos, a number of isolated transformers, balanced transformers, regenerators…
For a couple years I was runn...
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[quote user="AndySpalla"]Mr. Bessnow, What ground DO you use? [/quote]I have my own ground, the standard “backyard type”. Ironically the present of better ground dose not manifest itself sonically, at least it was in my case. Well, let pu...
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Melquiades condition (both cathodes heated)Plate Voltage 220vBias Voltage -80v (-110v puts the working point in a ridiculous place on the curves I have)Plate current (according to the curves) 165mA approxPower Output 15.5 Watts2nd Harmonic ...
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Romy,I already send money to Pieter for OTP transformers. Now I need power transformers and chokes.This is Pieter propose: (He look at the schema)2 x power supply transformer - 12,6V/5A - 6,3V/1A2 x ...
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Looking around quickly, it appears that it takes about 2 hp to generate 1,000VAC. Around these parts, this probably means a 3-phase 220V electric driver motor, which would totally pollute the entire house electrical system that drives it, ...
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As I am unable to find anyone to do this for me, I may have to try this myself. What I am worried about is the "months to analyze the mistakes and prospective areas of improvement" part... I don't think I am capable of doing that. I can order t...
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[quote user="Paul S"] Since - according to users - PP2000 seems to work better off battery alone, …..[/quote] I do not share this sentiment. If a specific unit is not broken then it shall be no difference between working off battery vs. working from ...
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Hello Mani,I am using a 10KW balanced transformer on my system with dedicated earth just as you are, I use two 110V power lines to enter making it 220 volts on the primary and get 110 volts on the secondary with the earth. I have a rod in the garden...
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[quote user="KOTriode"] Thank you for the comment on this amp, this is my first time of using the 6C33C tube, I decided to build this amp after reading about the Melquiades, this amp is just a quick experiment on the 6C33C sound, since I have a s...
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