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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Continuing to harass the readers of my site and myself with the good news about the performance of my SA8535 driver I would like to post a very educational article about the subject. As I told before, being familiar with sound of ribbons then never i...
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Thank you for your answer.If I understand well, In purpose to do something realistic and good sounding. I should use at least 2 amplifiers (one for high frequencies and the GM-100 amp for low frequencies) with a tubes active filter at the inputs of e...
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Well... tis for all reading/following this thread. As Romy pointed out, having high gain is not the same as power. And as Adrian hinted at... the overall system paradigm is important. If you're only barely cracking the volume control on yo...
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[quote user="haralanov"]N-set, a friend of mine built an amp with this monstrous USSR tube. It has 3 stages and the GU81M is driven by 6C33C. Within context of driving mid or high sensitivity bass drivers, this is all you need. In comparison, his pre...
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hmm...I didn't realise I had left my browser logged-in to your site (I left my PC on over night, downloading some files).'..the only advantage that class-D amplification has is cost, size, heat generation and power.'In my eyes, that's more than I cou...
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The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996
Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...
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[quote user="Romy the Cat"]What surprises me however is why you have expressed an interest in the high power tubes? You are with horns and even you LF sections have over 100dB sensitivity. What will you do with 120W SET?[/quote]The subwoofer still ne...
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Another particle of a good Horn Propaganda. It was published in Sound Practices in 1994 and written by Joe Roberts. I disagree with quite many of the author’s statements but his strategic view that the majority of the horns and the horn installations...
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[quote user="floobydust"]As Romy pointed out, having high gain is not the same as power. If you're only barely cracking the volume control on your amplifier or preamplifier then it should be obvious that you have more gain than you need. If you're p...
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What even more interesting is the relation between sensitivity power. Evan a quadruple increase of power is no compensation for decrease sensitivity. There are many objective justifications why “power does not help”: flux modulations, thermo desertio...
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You might find that you don't need that much power.When I first built the ULF channels I assumed they would require loads of power, so I bought a single, mono, 1KW class D amp to use in testing. Then I tried driving them with a pair of M1.1s that I h...
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Among many outrages foolishness that are so common among the people who going high-end audio one of the most ridicules is use of Single-Ended Triodes and low sensitivity speakers. The people who have db-meters between their ears instead of brain are ...
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What do you think about the technology employed here :Shindo Latour http://www.shindo-laboratory.co.jp/English/Latour.jpg Units: Field high frequency unit and Field low Frequency unit and power supply units for Field coils. Enclsurers:floor type. F...
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[quote user="RF at Ona"]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 t...
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Nope, I am not familiar with sound or applications of this tube. It is indirect heated beam tetrode – why would it be any different from the whole family of beam tetrodes? From my perspective it might be interesting for ULF DSET solution as it has a...
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With my limited experience of using pentodes (primary as phono corrector first stage) I think that the most mysterious in them is power supply of bias to "other" grids. Looking at the Milq schematics it is obvious that I pay too much attention to th...
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If you contact the guy he will probably tell you where it is from. It is good and it is a bigger flame than the one used by Acapella. The ion tweeters absolutely need clean power AND need to be isolated from the rest of your system as the...
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Looking again at the NAT Audio Magna amp, the amps around the 833A, GU81, 50TH, 1000TH, GM100 and many other SETs that try to use powers transmuting tubes I feel that the entire endeavor of powerful SETs shoot itself in a leg.
If a person has too de...
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The reason that I built the 6C33C preamp was to explore the 6C33C true musical potential like I did with the 845. Not only did I compare the sound of these tubes in power amp, but also in preamp. The reason is that with power amp you might hit some l...
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[quote user="drdna"]Still Robert Harley does end with a statement I can agree with: "Perhaps the low-power amplifier/high-sensitivity horn-loaded loudspeaker approach... is the true path towards creating the illusion of live music in our homes."[/quo...
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The Lamm ML3 made me to think about this subject. Since my negative expectations about the ML3’s Class A2 operation turned out to be wrong and since we go into expense and efforts (totally unnecessary in my view as DSET make it worthless) and m...
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[quote user="jessie.dazzle"]You might find that you don't need that much power.When I first built the ULF channels I assumed they would require loads of power, so I bought a single, mono, 1KW class D amp to use in testing. Then I tried driving them w...
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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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Oh, I forgot, the input sensitivity is roughly 0.95Vrms. At 6W power, the output sinewave looks like this:[img]http://www.hagtech.com/blog/images/pa-10power.jpg[/img]When driven into overload, a +6dB input (1.9Vrms) generates 13W output and it ...
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I asked my Japanese speaking friend to translate for me the information about the tweeter in that Brazilian installation. It is JBL UT-045Be, I never have seen/heard it, and so I presume many others… 25mm beryllium spherical diaphragm, 52mm circ...
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Despite the tremendous popularity of the single-ended amplifiers have a certain group of audio people, let to be honest: the SETs do not sound REAL in audio people’s listening rooms. I was in many of those listening rooms and have heard many best SET...
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Romy, yes it is an interesting subject and one that I have thought quite a bit about although not directly from the angle from which you are approaching it.One of Macondos great strengths is narrow directivity from high frequencies all the way down t...
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It is interning that Zu Druids was mentioned in context of this thread. I have a local guy what lives a few blocks away have Zu Druids and I happened heard them quite a few times. They have reported 101dB sensitivity and more or less high impedance b...
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I think it needed to be expended what I mean by “new smart layout of the power cables”. What you run a large system than you have many circumstances when power cables cross signal cables. Not only that. The PDO cables are liquid filled and they do no...
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Romy, thanks a lot for your response. I have no idea how come I did not come across your website years ago. I found it a few days ago and I spent many hours reading it. I am greatly intrigued by the Milq and I have some follow up questions, I hope so...
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