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Read the Post in new Window Read the Post in Threaded view  Post #153: DHT 2A3 amplifier rectification by drdna on 2009-02-07 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
I am not sure what rectifier the 2A3 SET uses. Mine uses the GZ37. The best regarded is usually the Mullard NOS. I have used that for years. Recently I was on the kick of listening to the vibration of tubes and I came across a dirt cheap tube fr...

Read the Post in new Window Read the Post in Threaded view  Post #5: Vitavox drivers? by drdna on 2009-02-07 
Browse the content of the threads in new Window  Thread: EdgarHorn Speaker Project in Horn-Loaded Speakers  8 Replies 
[quote user="Romy the Cat"]If you are still in MF frustrations then I have something that you might find interesting. Recently I pick up in UK a pair of Vitavox S3 drivers. I figure that if you wish I might let you to play with before they die in my...

Read the Post in new Window Read the Post in Threaded view  Post #5: The scientific method by drdna on 2009-02-03 
Browse the content of the threads in new Window  Thread: The Avicenna's failure is the great Avicenna success! in Audio Discussions  8 Replies 
[quote user="Romy the Cat"][quote user="drdna"] First, I do not accept the hypothesis. We must confirm that the Avicenna was working correctly when no impact on the sound was made. It has happened before that a simple mistake in observation led to a ...

Read the Post in new Window Read the Post in Threaded view  Post #2: How do power conditioners work? by drdna on 2009-02-03 
Browse the content of the threads in new Window  Thread: The Avicenna's failure is the great Avicenna success! in Audio Discussions  8 Replies 
[quote user="Romy the Cat"]It turns out that Avicenna absolutely flawlessly and absolutely naturally cures electricity from all imaginable distortions and noises and feeds equipment with an absolutely perfect sinusoid; It is also turns out the Avicen...

Read the Post in new Window Read the Post in Threaded view  Post #6: The right stuff by drdna on 2009-01-31 
Browse the content of the threads in new Window  Thread: About the Playbacks’ Thinkability. in Playback Listening  5 Replies 
[quote user="Paul S"]For a while there, every system change I made that "improved" the sound also limited my musical choices. But the most recent round of changes has had the opposite effect, much to my delight, and I have been amazed by how well gre...

Read the Post in new Window Read the Post in Threaded view  Post #3: Audio recording and reproduction by drdna on 2009-01-31 
Browse the content of the threads in new Window  Thread: About the Playbacks’ Thinkability. in Playback Listening  5 Replies 
[quote user="Stitch"]Whenever I had contact with "Audiophiles" and I asked about the impressions about a component, I get 99% always the same answer: "....too analytical for me....whoa strong bass...I like it faster...I prefer more highs...I prefer m...

Read the Post in new Window Read the Post in Threaded view  Post #97: Driver-enclosure coupling by drdna on 2009-01-30 
Browse the content of the threads in new Window  Thread: Macondo’s MiniMe or about Pilot Acoustic Systems in Audio Discussions  213 Replies 
[quote user="jessie.dazzle"]I feel a driver needs to be somewhat hard-mounted to the enclosure. Cork gives the right sort of balance between hard-mounting and floating, while still sealing.[/quote]It's all about finding the balance point between the ...

Read the Post in new Window Read the Post in Threaded view  Post #145: Tube sound and vibration by drdna on 2009-01-28 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="Romy the Cat"][quote user="drdna"]As I had been looking at all these tubes I began to also inspect their interior construction. This will amuse you: one thing I would do is to hold the tube right up to my ear so the glass would be touchi...

Read the Post in new Window Read the Post in Threaded view  Post #142: Vibration in tubes and sounds by drdna on 2009-01-27 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="Romy the Cat"]Stonily they are very similar in my view with a very slight advantage of 6E6P in delicacy and softness. I do not know what you mean “respond differently regarding vibration.”[/quote]As I had been looking at all these tubes...

Read the Post in new Window Read the Post in Threaded view  Post #140: 6E5P VS 6E6P by drdna on 2009-01-27 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Romy, I assume you plan to use one of these as the driver tube. Do you distinguish any difference in the sound between the two tubes? I am curious as I have been looking over a big pile of them and they respond quite differently regarding vibrat...

Read the Post in new Window Read the Post in Threaded view  Post #3: TV antenna by drdna on 2009-01-27 
Browse the content of the threads in new Window  Thread: REL Precedent Tuner - Antenna Connection in Off Air Audio  9 Replies 
Like this one? http://cgi.ebay.com/AweSoMe-Vintatge-50s-TV-Antenna_W0QQitemZ250363939125QQihZ015QQcategoryZ73374QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Adrian...

Read the Post in new Window Read the Post in Threaded view  Post #131: Sylvania 2A3 identification by drdna on 2009-01-26 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="floobydust"]I do agree that the internal structure makes a big difference... but, if the tube specs properly and has adequate immunity to mechanical induced interference, then you should not be able to discern any major difference in sou...

Read the Post in new Window Read the Post in Threaded view  Post #129: NOS 2A3 tubes versus new tubes by drdna on 2009-01-26 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
I totally am a believer that the construction of a tube determines how it will sound. This makes perfect sense when you consider the tube is relies on the changing flux of electrons in a vacuum. It is easier at least for me to visualize this as a ph...

Read the Post in new Window Read the Post in Threaded view  Post #127: 2A3 tube impressions by drdna on 2009-01-26 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Just some additional thoughts on the new generation of 2A3 tubes. The only ones I would seriously consider are the Kron Enterprises, the Sophia Electric, and the Emission Labs tubes. If I did not hear these side by side over an extended period of ti...

Read the Post in new Window Read the Post in Threaded view  Post #3: HF issues by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: EdgarHorn Speaker Project in Horn-Loaded Speakers  8 Replies 
[quote user="Romy the Cat"]The first thing first I think that your fear that your “midrange might have ideal frequency response” is not a motivation to change anything. Are you concern about frequency response or about the well-identified subjective ...

Read the Post in new Window Read the Post in Threaded view  Post #67: It's all semantics... by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Romy the Cat"]Joe still does not “get” that a playback do not impersonate the imaging of original performance event but rather create the imaging of reproductive intentions where the system arranger and certain elements of playback act a...

Read the Post in new Window Read the Post in Threaded view  Post #65: Stereo imaging by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="tuga"]I once came across this article on Stereo and Phase by JM LeCleach. It has interesting considerations on the subject of imaging[/quote]Thanks tuga. It is a nice article, but my French is a little rusty. It seems that he does very...

Read the Post in new Window Read the Post in Threaded view  Post #64: HP the Cat? by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Joe Roberts"][QUOTE]I do not know that HP use to tell in 80s[/QUOTE]I know you don't, that's why I seriously suggest you check it out.[/quote]Romy, are you not familiar with the early efforts of Harry Pearson? I lived through all of tha...

Read the Post in new Window Read the Post in Threaded view  Post #1: EdgarHorn Speaker Project by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: EdgarHorn Speaker Project in Horn-Loaded Speakers  8 Replies 
The EdgarHorn Titan is a very well made speaker, but I have identified in it a limitation in the midrange where the frequency response may not be ideal. This will become clear after I have analyzed the speakers with RTA. Thinking ahead, I want to...

Read the Post in new Window Read the Post in Threaded view  Post #58: Full range drivers by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Paul S"]The things I like best about a good wide-range driver are coherence and immediacy: like nothing else I know of, but awareness of the limited range quickly come to the fore.[/quote]Paul, my experience with wide range drivers is li...

Read the Post in new Window Read the Post in Threaded view  Post #56: Imaging and soundstage by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Romy the Cat"]At even higher level the “imaging” and “soundstage” merge again but soundstage there become not the soundstage of musical even but a conditional horizon of a listener listening consciousness. There is one even higher level,...

Read the Post in new Window Read the Post in Threaded view  Post #55: Recalling a different focus on audio by drdna on 2009-01-25 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Tuga"]Joe, Don't get me wrong, I really enjoy a good pizza. Unfortunately I won't find one in a Pizzahut. "That" man's 2 for 1 pleasure says a lot about his evaluating capabilities... I also enjoy several different kinds of music, mostly...

Read the Post in new Window Read the Post in Threaded view  Post #47: Point sources: what are they? by drdna on 2009-01-24 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="tuga"]If you have a midrange driver you can try that for yourself.[/quote]In this case the lack of "full-range" audio is so glaring it overwhelms any advantage of the point source, I think. [quote user="tuga"]BTW, do you consider elec...

Read the Post in new Window Read the Post in Threaded view  Post #45: What a shame... by drdna on 2009-01-24 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Joe Roberts"]I have had round Edgarhorns and Lowthers so I understand what narrowing radiation as a function of frequency is about. My thought sniff tells me Romy's rig is good enough that even if there is some component of self-delusion...

Read the Post in new Window Read the Post in Threaded view  Post #44: Validity of a point source? by drdna on 2009-01-24 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Joe Roberts"]The illusion of a single source is lost. [/quote][quote user="Romy the Cat"]The “single source” neither is a fact a byproduct of a specific sound reproduction method but it has no existence in LIVE sound and there is not nee...

Read the Post in new Window Read the Post in Threaded view  Post #8: How it sounds by drdna on 2009-01-22 
Browse the content of the threads in new Window  Thread: A sort of DPOLs in Melquiades Amplifier  8 Replies 
[quote user="Romy the Cat"]Listening what you are saying I wonder of is it possible that you in fact are taking about a very fine balance of HF in your playback? Just for a sake of experiment: when you feel that the “conditions are not met” anymore a...

Read the Post in new Window Read the Post in Threaded view  Post #26: Good Sound Club by drdna on 2009-01-22 
Browse the content of the threads in new Window  Thread: Aporia - Silbatone Acoustics speaker in Horn-Loaded Speakers  107 Replies 
[quote user="Joe Roberts"]In accordance with my deeply felt philosophy that one should do with audio whatever makes one happy, I certainly recognize and defend your right to think and do what you please.[/quote] So what is the difference between the...

Read the Post in new Window Read the Post in Threaded view  Post #4: Crossover and DSET? by drdna on 2009-01-21 
Browse the content of the threads in new Window  Thread: If you’re multiamping then use passive-line lever crossoveri... in Audio For Dummies ™  3 Replies 
[quote user="Romy the Cat"]I am sorry; I do not follow what you are saing. I see no relation between a need to use a crossover with DSET topology. The Cat[/quote]What I am thinking is that with full range amplifier, you must use a speaker level cross...

Read the Post in new Window Read the Post in Threaded view  Post #2: Passive line level crossover advantages by drdna on 2009-01-21 
Browse the content of the threads in new Window  Thread: If you’re multiamping then use passive-line lever crossoveri... in Audio For Dummies ™  3 Replies 
[quote user="Romy the Cat"]The line-level crossovers work against fixed impedance and therefore the crossover point and the time alignment does not fluctuate along with reactance of the drivers.[/quote]Okay, maybe this is a dumb question, but why wou...

Read the Post in new Window Read the Post in Threaded view  Post #118: The New 2A3 tubes by drdna on 2009-01-19 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Having listened for a while with the tubes, I have come to some conclusions. The three tubes I have seriously listened to are: Kron, Sophia, and Emission Labs. All the tubes are much better than any other modern 2A3 tubes I have tried. I felt my in...
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