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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Romy the Cat"]
Any LF acoustic system has two SPL levels: the SPL of pressure and the SPL of tone.[/quote]Ahhh! Very good Romy. I don't recall you talking about Pressure and Tone SPL before. The tapped horn can be designed any 3 ways....
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Paul,It would be improper for me to write down what I have worked on over almost 40 years in the telcoms business. WRT a CV for example, I have in the past written it all down and the reviewers do not believe it. Eventually, i stopped bothering abo...
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[quote user="noviygera"] Is there a pill for that too? Seriously, it would be very interesting to hear what solution you come up with because I have converted from listening music solo to a small number of audience (friends). So much that I listen by...
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Haralanov, do not write stupid posts, you have “no experience and no knowledge” about it. Also, do not propose to look at any other speakers as looking is very a deceptive activity. There is a phenomenon of vision that called “phantom visual reality”...
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There seems to be a lack of useful feedback on the actual sound quality of these oddball, relatively rare TAD mids. So I think it would be helpful to share some basic observations I gather after listening to them for a couple of days. I install these...
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I run the driver tube at 170V @20mA. I don't think you need to run this tube at high current. It is very linear with wide signal swings at this bias. I can get roughly 70Vrms out of it. Output stage clips first, driver continu...
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Firstly are your observations regarding the ZH270 relating to comparisons with other push pull designs or SET's?
Secondly could you explain which characteristics of the recording are destroyed, and what mechanism David Berning uses to acheive this...
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[quote user="Stitch"] None of these owners bought it because they can hear a difference, they are absolutely not interested in that and they have absolutely no idea about it!! They bought it as a toy and to get a position in an audiophile community a...
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I do not know if I agree, or take seriously belt creeping. Belt creeping is applicable for the systems where the speed or tension a variable. However, in the case of TT, where the speed and tension are constant the amount of belt creep is constant al...
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[quote user="skushino"]Guys, my attention has been elsewhere the past couple of weeks. The catalyst for the original post was to go beyond the usual "speakers in a room" approach, and use the room itself as an integral part of the sound. IB seemed ...
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Hi Romy, I recently heard the smallest Cessaro and while I felt that the bass was not adequate for long term satisfaction it was also not a total disaster. From the midbass on up; however, the speaker is simply superb and one of the very best h...
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Indeed I did not understood you.
If you would like Milq’s front end to drive something else then it is perfectly
fine solution. We have it to drive 6C33C, GM70, many DH tubes, SS push/pull. I
do not know about the Class D module current requiremen...
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[quote user="jzagaja"]To make the story short Autotech is a family business located in Lublin, Poland. Younger brothers graduated in mechanical engineering are cars and racing lovers - with scores in Europe as professional drivers and mechanics. One...
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Pretend
a driver diaphragm, any driver. From front diaphragm "sees" the horn
throat and the mass of air in the horn that diaphragm needs to
"push". This creates let call front spring. If a driver has a front
chamber than let discard it for now. ...
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The other night I listened to a Girl with Guitar master tape. A friend has a home recording studio that would make most comercial studios not only jelaous, but also broke. A highly modded ATR 102 in 1/4" half track and a vintage stereo microphone; ...
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I have heard hundreds and hundreds of audio systems and mine is by far the best. Honestly nothing even comes close. There is a scientific reason for this. MY system starts with a PERFECTLY tuned room...something overlooked by ma...
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It is interesting to recall how audio started in my life. Somebody asked and I was puling out from my memories some unconnected fragments was really enjoying to recall those times…
I do not relay remember how old I was. I was then probably 10, as a...
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Hi,[quote user="morricab"]Hmmm....I guess I can't really see that unless you are enjoying a particular coloration you are getting from the TVC.[/quote] Nope. On this you are wrong. Based on direct bypass tests the TVC's I USE (that is the specif...
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[quote user="Romy the Cat"]Make the full-range and then you will see where you are.
Still, I feel that for MF channels it is beneficial for do with a good DHT output
stage instead of 6C33C and perhaps it is a good idea to use DHT driver as well.
S...
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[quote user="rowuk"]I am always a bit hesitant to buy into "listening descriptions". I am a musician and am confronted every day with Sound bias - attraction to what we are accustomed to, expectations being confirmed. We are creatures of habit and mo...
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Dear Romy,Assuming that your questions are "honest" ones ( I have no reason to believe they are traps, like it happened to me before with a certain Mr. Thor), I will give you "honest" answers, hoping that our dialogue will be of some interest to the ...
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Norman Lebrecht writes:"Like the final track on Sergeant Pepper, like the Beatles themselves, the end for EMI came with a sob and a sigh. At tea-time on Monday, the world’s oldest record company declared losses of £264 million and no hope of re...
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I wonder if any new interning horns ideas are present at CES. There is a post at the hi-fi-heroin site:
http://hifiheroin.blogspot.com/2011/01/ces-preview-you-actually-want-to-see.html
… that depicts a new speaker. I kind of like...
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Thanks, Romy, for your generous reply.
I won't try to address everything about everything, but let me bore
you with a mini-history of what is going on with my playback so you
will understand where I'm coming from and where I'm trying to ...
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How do you make that calculation? Seems to be way out of line with my experience. I have been very happy with 35w maximum of Radford STA25 push-pull valve power, and my current 20w single ended works just fine.
I'm listening to m...
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About importance of impedance curve and current delivery of amplifier i agree you but generally we have some numbers (watt for spl) for average condition.
Live or dead rooms and bass extension are also change the numbers .
My numbers come ...
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[quote user="drdna"] I felt I was listening to the clearest, most neutral, most transparent STEREO ever. But I never once relaxed and believed it was real I never thought "What was Coltrane thinking on that take?" or waited for the musicians to take ...
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Ok, Andrew, this is allergy something. I would highly advise you in future before you post any discrete updates, questions, and ideas about what you to inform about the holistic objective of your project, sort of a view from 50.000 feet...
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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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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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