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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I would like to overview the content of my thoughts on the subject. I feel that the first phase of my interest in single-stage Milq vs. DHT is over and I can make some observations.
The subject turned out to be more interesting and more changi...
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Ok, the design phase is over, there is nothing to do with the making the amps, at least without needs to change it sound. I have to admit that I did not really listen the amp until I felt comfortable and now it show reasonable measurable performance ...
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As I play the old-but-new-to-me ML2s more, and as I slowly replace tubes, performance has changed a lot, and all for the better. Understand that I am not really talking about the ML2s, but about the sound I am getting, which is so different and...
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N-Set, how do you plan to convert the 3 phase back to 1 phase? Also, it is likely that the whole house system uses the same ground. IMO, careful routing and keeping neutrals and grounds separate to the original ground bus is probably as good as anyt...
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Tweeters Alignment - what is a bitchy subject! I was mildly complaining about it for years and during the last few weeks I complain about my own tweeters - primary because the very same issues of the imperfect alignment. This there is a derivation of...
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Hello, Ulf.
Interesting. The TAD1201H is 12-incher with resonant frequency of 50Hz. It has relatively low resonant frequency for 100Hz Tractrix midbass but you most like used 10” thought and consequentially shorter horn. The shorter horns beam...
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To argue that time alignment is unnecessary is to go against a very basic feature of the auditory system: sound location from phase information. But if so, then the effect ought to be frequency specific, with a much lower magnitude ...
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Maybe we could do something for the string or horn section of an orchestra as what reaches the microphone is very „random“ including early and late reflections. I would imagine problems however with instruments with less „random“ pickup: trumpets, tr...
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Edgar, very very nice observations re the phase! Can you somehow share the movie? Shouldn't there be a second phase jump around Fs of the passive radiator?
Have you tried combining sealed subs running parallel with Dannoys? I.e. ...
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Amy told me that when she first time visited me my room appeared to her like an interrogation facility: large room with bunch of equipment and a single chair in the middle. I understand where she got the idea from but I loved that free standing s...
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Steve, of course I have noted very obvious, problematic "phase issues" with speakers in the past. And of course we want the Sound to fill the room - apropos - with Music, not noise. But good luck with keeping track of "phase angles", and good luck ...
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[quote user="Edgar="]
N-Set, I invite you to make your own recording of the phase of your Dunnoy. I used my phone camera to do it and a free online sweep generator. I had Tannoy, Scanspeak and laptop screen all in shot when I filmed and shot...
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[quote user="Dresden"] ... two J-shaped horns back-to-back, as though it were a mirror image. --the drivers do NOT share the same throat, but instead each driver loads its own horn. I'm sure the 'picture' is now clear, correct?...If...
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I've only had the pleasure of listening to 'professional' horns (whatever 'professional' really stands for)--horn normally used in concerts and small venues. (It was always so obvious to me--by listening--that the range of the horn-loaded 'bass...
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Actually, the above mentioned “Phase-it” devise has on-board “generator” that sends out the pulses and they it looks like the pulses of the high voltage, the speaker level pulses. I do not find it convenient and I do not know if the “Phase-it” devise...
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Happy New Year to everybody![quote user="Paul S"]N-Set, how do you plan to convert the 3 phase back to 1 phase? Also, it is likely that the whole house system uses the same ground. [/quote] Paul, each phase to neutral is 230V, so as I understand in...
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N-set, I do not think that we from America would be able to talk about 3-phase or to share any 3-phase experiences. We in US do not have 3-phase in residential neighborhood, in fact it is prohibited by code and if you want to have it then it is very ...
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Originally written by David Hurwitz and posted at “Classics Today”: SEVEN PHASES IN THE LIFE OF A HARD-CORE COLLECTOR Do You Recognize Yourself Here? I’m sure that some of you have seen that famous little poster called “The Six Phases of a Proj...
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Not saying the "pieces effect" "matters", but is it possible that this stems from using 1-phase power instead of the designed-for 3-phase? After all, the 1-phase is not merely "less power", but it also changes the way the power is delivered. Too ba...
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"Meanwhile, I suppose we mostly tend to think of "phase" as a 180 proposition, +/-, either/or." Not I, sir! Phase is a matter of degrees. Polarity is a total flip, which is why it's a far better word for the two conditions under discussion.So let's p...
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Having two dedicated lines of each phase-split was a great idea. Each of the phase-split behave like different animal and even though there there is some penetration of events from one 120V phase-split to another but they do act, measure and sound as...
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Firts of all apologies for not going through all 49 pages of the thread and asking probably a well known question with a well known answer.I'm slowly gravitating towards that black hole of a "clean power". As a first obvious step I'm thinking of a de...
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Funny that people think that phase issues just go away with so-called "FR" drivers, which have their own electrical and mechanical phase problems. Of course it doesn't get any "better" with multi-way, multi-amped mega systems...I have wondered for a...
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Unicon, when you lose the 6 screws on same driver equally and sound changes then what exactly you feel is changing in sound. I do not mind you reporting that sound change but I still not at ease that you associate the change with phase. I do not thin...
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Srajan La Pergola just announced that Danish company “FMJ Audio” began to make an acoustic phase tester. An acoustic phase tester is absolutely mandatory thing for anyone who uses horns. If a person use horns and has no ways to objectively recognize ...
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[quote user="Romy the Cat"]Unicon, when you lose the 6 screws on same driver equally and sound changes then what exactly you feel is changing in sound. I do not mind you reporting that sound change but I still not at ease that you associate the chang...
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[quote user="Paul S"]Funny that people think that phase issues just go away with so-called "FR" drivers, which have their own electrical and mechanical phase problems. Of course it doesn't get any "better" with multi-way, multi-amped mega systems......
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The effect indeed is very interesting. I think it has to do with some complex phase interaction what the high knee of ULF squashes the lower knee of midbass. From general perspective I would say that this is not good as I would prefer to observe summ...
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[quote user="haralanov"] This experiment was made a few days ago by a friend of mine who is speaker repair person. The modified compression driver is Soviet made 1A-16. If you have the chance to compare the single layer VC vs. the original VC and to ...
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I’m glad you talk about geometry, but to respond to this I have to refer to other brands. I will only talk about facts and hope it’s not offending anybody.My basic point is: the flare rate has to be coherent right from the entrance of phase plugs. In...
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