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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I got a forwarded email today containing the Lamm Industry’s release notes about their new SET amplifiers.
http://www.GoodSoundClub.com/PDF/LammML3.pdf The good thing in this is that Vladimir is still Vladimir and he did changed since the Rich ...
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Agreed.... ditch the choke... you don't need any additional decoupling. One last model shows the following assuming a 350 volt supply and a 6K load.Useing a 1.21K cathode resistor, it works best to minimize distortion and balances the transfer charac...
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Welll, you still did not express yourself what are the sonic verdure of DHT from your point of view. You are not obligated I juts proposed you to do it if you feel that have any observations on the subject.
[quote user="guy sergeant"] I started by s...
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It's 60Hz hum, caused by both mechanical and magnetic field coupling to the output transformer. I used a toroidal transformer and thought it would not caused this problem but it did. When using an external power supply for both ...
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Paul S,Cessaro use plate amplifiers in theirs "bass horns". I do not know if they are made by Hypex (I think I already saw "Made in Poland" in one of theirs amplifiers) but if you find someone around with a Cessaro you could experience it.EDIT: a bet...
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I heard the 'cole' LCR phono by the hifi supply recently at a friends house and it sounded ok, the Allnic 1500 that I am using at the moment is the best phono I have heard, and the price is extremely reasonable for the design, valve regula...
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I think it best you speak to Ralph directly ,he works with these drivers every day.I do recollect that inthe case of the Supravox ,where there are permanent and field coil versions of the same driver,Ralph told me that there wasn't a huge difference ...
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Post #54:
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by
be
on
2010-02-25
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Hello Haralanow.The diference you observed between high and low impedance fieldcoils, where they in the same unit and did you use the same kind of power supply? RegardsErik...
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given that you are only really interested in measuring the field strength in one particular size of magnet gap ie that of the S2, is it worth considering making your own as in this link. http://home5.inet.tele.dk/f-hammer/fildcoil/measure.htmOne coil...
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The 834p is a tried and true circuit. It should be OK. If you have hum, I would suspect the step up transformers first and the power supply second. Maybe a ground lead is not attached?Take it completely out of the system, disconnect the phono leads, ...
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Romy, Are you aware that there is a new?! site for pure power - (removed) - which has the following statement on their site A management change at the end of 2011 closed the Canadian office. That office can no longer supply authentic PurePower prod...
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[quote user="guy sergeant"] I'm sure there are many bad implementations of the 845 and 211. Almost all of the commercially available ones are pretty mediocre. However I have heard good examples of both so I know it can be done. [/quote]
Actually I d...
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[quote user="drdna"] If you were using, for example, the Kron KR 2A3, you would not be commenting on the sluggish liquid sounds, and it would be very much more competitive with the Melquiades I am sure of it. Adrian[/quote]I doubt swapping...
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Romy, I have to admit that there are as many differences in film caps as there are in electrolytic caps. You can find varying opinions for and against both based on brand, type and usage. As noted, large value film caps get (physically) large so you...
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. . .do make a difference. Here's my view on the problems with power supplies within our audio gear. Textbooks are loaded with design desiderata that have achieved the level of gospel truth. No one really thinks much about their effect on sound, just...
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He has mine now. Of course, I don't give a crap about the "power supply", since I am happy with the battery. And it's hard to imagine anything on my VERY basic unit getting further "simplified"; but bass is nice. We'll see.Paul S...
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Romy, what actually happened? Do you know what is wrong?I know that my unit was with Dave 2-3 years - it transpired that its power supply was faulty (a capacitor, I think). In any event, I hope the issue with yours isn't too serious. You probably...
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are pair of jbl 2420work with 100-130 voltpower supply is with 5u4 tubei use with diy tactrix horn and jensen field coil woofers.crossover at 800 hz 6 db or when use 3 way multiamplification 800-8000 in this case tweeter is old jensen-magnavox.no sel...
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Romy and friends,
Reading about the sensitivity of your system to electrical power supply problems reminds me of the days when I used to make my own equipment as much for the learning experience as for the final result.
One of the mundane things I ...
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Hi Roman, FM Acoustics amplifiers from Switserland have been regarded by many audiophiles (mostly the ones with lots of money) as the best sounding (solid state) amps regardless of price. They even bettered the best amps from Krell, Mark Levinson, et...
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Romy, have you been able to gather any thoughts yet about the new "bad-AC-proof" power supply?If yours is actually bad-AC-proof and still sounds just as good or better than the "crappy little PS" with good AC then it will be good news.Do I ...
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This will be very interesting indeed... that is an enormous airgap and will make for a very linear and unstressed hunk of iron. You may wish to apply similar tactics to the power supply (low DCR inductors) if you want to be really surprised...Which r...
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I'll buy some more 7788 and give them a try. I'd hate to change tubes at this point. My triode connection has pin 8 (g3) to anode, not ground). I wonder if that makes a difference. Also, the power supply chokes are nearby, per...
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True, I don't know exactly what is that modification!I am not able to find where I saw they modify the drivers but here you can find some pictures of the Cessaro power supply at least and some generic citations:http://www.audioexotics.hk/index.php?op...
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[quote user="Purite Audio"]Field coils do need to
be used with a degree of care, you mustn't forget to turn on the power
supply!Keith.[/quote]
Well, yes and no. For sure you should not forget to turn
them on but the intelligent way is to feed f...
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[quote user="TonyB"]I disagree. I think it depends on the turntable. If I did not try it on MY turntable, I would not believe. My Verdier uses a DC motor "sloppy" mounted on grommets. The drive is linen thread. I have tried silk, different threads, 1...
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Dear Romy,It may be worthwhile to check what transformer is installed in your DA924 because Lavry did change over to torroid transformers from the laminated core power supply transformer. Also it is a good practice to periodically ship the...
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Romy, would you mind elaborating on specifics of your power supply? My Bidat is going to John in a couple of weeks and I am finalizing my thoughts. Thank you....
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You had mentioned the dry cells before but I was unaware of them.I went with the LiFePo the fellow recommended. I had ordered it before you posted this.The key is depth of discharge and I am not sure if they are specifying this. All of their specif...
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[quote user="Romy the Cat"]
It look like the project progress well. I have a little concern
about heat the will be building up in your PS enclosure. I do not know what
kind ventilation hole you have in there but be advised that it will be quite
...
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