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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hm, a German company Audio Valve clams that this new Assistant 100 amps has
“110 w sinus wave - 1khz / 1% dist. / 8 ohm load, per channel”
http://www.audiovalve.info/nav/assi100_en.html
That is bold statement even if you drive...
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It is ridicules how pleasant the Yamaha B2 sound when it operates in class A and how much worse it sounds when it switches to class AB. I did not measure the power but with default 40mA it switches to class B very soon. With my current cooling te...
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Thanks for the link, Romy. I'll check it out. Too bad there isn't more information about the ML2 available. A schemo with some values would be nice. Do you know if anyone has sorted it out yet?Steve Bench happens to live near ...
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[quote user="dkarmeli"]I have an AF1. I understand your justified bias regarding reviews, but this is one of those rare cases where the reviewer does know what he's talking about.[/quote]David, I hope you understand Paul's recalcitrance. We've all be...
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I see, what they did – the built a perfect sealed chimney with two fans to suck cold air in and two fans to suck hot air out. Well, it might work, even though I do like this idea. I absolutely do not see why such a hot and large tube as 6C33C sha...
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A couple days ago a local friend of mine asked to let him to listen my Celestion SL600 monitors:
http://www.goodsoundclub.com/TreeItem.aspx?PostID=2500 (on the second page)
I brought to him the monitors with the stand (but with no LF sec...
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[quote user="Romy the Cat"] The HF Range “F” channel: The 6E6P-DR at 30mA connected at tetrode. The filter is second order with Sowter 9858 Pultec MEQ-5 EQ Inductor 420/277/145/108/61/34 mH) and variable air cap. The variable inductance and capacitan...
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Last night I was cleaning/setting the room where the hated Altec 19 were sitting and I decided play them for a while. I used a few different amps. To drive Altec 19, especially in it’s default configuration, always was a subject of debates and disag...
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Here is a quote from visitor’s email that I received today about audio thinking existing within know to him audio communities: “… basically everybody writes with such bias and so keen to please one another (at least their croneys, their vested intere...
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[quote user="cv"]Here's a crazy thought... have you every tried driving the S2 directly from the Placette?! I know the 6E5p does some unique things but I wonder if it might be educational.The placette has a 7 ohm Zout right? Don't forget that that do...
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Romy,I looked at your Melq schematic : http://www.goodsoundclub.com/PDF/Melquiades_SET.pdf regarding the 6E5P bias. Would it be simpler to use two alkaline battery in place of R5 to provide 3V , or 3 Rechargeable for 3.6V in place of R5 ? Did you tr...
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...and the heaters: CCS chain on 6E5P + AC on the output.The Stax pro bias (580V) is coppied form the Auridux amphttp://www.dddac.de/tp08.htm...
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Daisy chaining ML2s:
Over in the thread about CES 2011http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=15482#15482Romy posted a link to photos taken by Mike, the owner of Audio Federationhttp://www.audiofederation.com/blog/Scrolling do...
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Nice one Jarek! Glad that you have it going. I've now switched my autoformer to the input as one of my new sources puts out over 10Vrms and I did not want to increase the bias. No real change in sound as far as I can tell. Enjoy....
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- and a very important point - about "matching" the 6C33C halves. I never thought of that, which is funny since I use the 6C33Cs myself and can't find actual matches anywhere (except for a pound of flesh, from VL, of course). And, as you note, the ...
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You could always pull the grid low on the unused triode section. And ground the cathode. That would prevent stripping, I believe. Just bias it to -100V or whatever.jh...
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Since renewing all tubes in both ML2s, over the period of about 3-5 minutes, the V2 bias on one of the amps cylcles between .27 and .33VDC. Is this behavior indicitive of a defective 6C33C?jd*...
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hi RomyNice bias battery gimmick for the el-caps!But, i see the hardcore analogue teams are having a hard time with room modes and time alignment :)I wonder what it takes to admit one day that you can’t neglect DSP anymore, and just having so much ea...
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Delet if not proper topic. Was wanting to experiment with 6e5p driving lifeless speakers. with possible 100v swing i'm guessing way to much for regular garbage amps. What are peoples ideas for lowering output v (to like >5v?) with out destroying...
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Thanks, Romy. What about drift in the driver bias, etc?I suppose the liveliest component, in terms of dramatic breakdown, is the electrolytics. I have been thinking of changing to film, but in that size they are hard to find at reasonable prices....
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[quote user="N-set"]BTW, how stable 6E5P is? I'm asking as I was contemplating biasing the output by the voltage drop on 6E5P's plate choke (DCR is say around 1k),with only some minimal autobias on the output. The drawback is that any drift in th...
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This thread has been pretty interesting overall. I've read most of it and would at least like to provide some feedback on the technical side of designing with the 45 and 2A3 DHTs... at least from my personal experience. A few years back I decid...
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I do not know how about 5dB attenuation
via cable but for sure cables sound very different. Hey you are talking to a person
who have a small fortune spent for wiring my entire system with vintage Dominos
and I never felt that it was waste of money...
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Carlosb, I do not remember. It should be written in my
tester but… I need to find the tester. I do remember that I after I spend a
hell of time to figure out how to test the tube with TV2 it I never actually
used my finding and never tested 6C33 w...
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I was thinking about the subject for a long time. People in audio love to make generalization, so do I, but in it is not so simple. People attribute to output tubes some “special” qualities but I more interested not about unnecessary drooling about A...
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[quote user="floobydust"]Plate supply = 350 voltsOPT Primary impedance - 3.5K
Cathode bias resistor = 866 ohm
Cathode bypass capacitor = 50uF
Grid resistor to ground = 249
You need to select a new OPT.... I would suggest the H-20-3.5U.[/quote]I b...
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Here is the signal box:The design is double mono past the VR's. Including the bias.
The coupling caps are Arcotronics KP172 from RS-Online, quite prised by Thorsten Loesch. THey are sitting on
sorbothane pads. The air caps are: 1) 365pF some +/- s...
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[quote user="Paul S"]Well, you can count me among those who are perennially frustrated by all the unnessary stupidy that goes into most recordings, that's for sure, although I have several hundred records that I would like to keep for the p...
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[quote user="Anonymous Gilles"]I am not fgrustrated but trying to gather information before making a decision. I sen you an email from france and I own electrovoice patricians in a large room, about 100 square metres my question is is your amp real b...
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Chris, I have no experience with good sounding SS amplifier that might drive high sensitive horns. I also have no expertise to build such an amp. From what I trued before I have learned that in order to sound more or less acceptable the SS should run...
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