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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi Amir,your english is just fine.I think that there is an additional factor that your formula needs. Sense of pitch is not determined acoustically by "Q" unless we are talking about pure sine waves. When we add the overtones found on real musical in...
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Actually Paul, I firmly believe that close listening to the MUSIC keeps us from listening to the warts of playback. The more the musical message grabs us, the easier it is to let go. Some of that has to do with the fact that there is some pretty fine...
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As a matter of fact with weak players it is hard to tune at all. On the other hand, the popularity of brass band or school concert band music is surely based on the masking caused by overtone rich instruments causing enough sidebands to mask serious ...
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Well, as I do play trumpets professionally and own much more than 6 instruments, I thought that I would chime in.First of all, Romy, this is one of the most lucid descriptions of pitch that I have ever read! It also raises a point for discussion:If I...
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Considering the minute amount of energy "created" (transformed) in a phono cartridge, perhaps some systems would truly benefit from geophysical orientation. Heck, in the days of expensive picture tube computer monitors there was a different tube for ...
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Is this not similar to gas mileage? In Germany, we have busses running on fuel cells. Is that optimum transportation? Well it depends. A Mercedes Benz E-Class automobile gets better diesel mileage than their much smaller B-Class with the same sized e...
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Romy's virtual example is a wonderful example of "context", perhaps the only error up to now in this thread.The description of Walters VirtualPhonoStage would be a great article for the website: http://www.I_am_a_deaf_musician_but_so_what.org, but ha...
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Paul,I agree 100%. Well sort of.....Can the idea of the overengineered, atomic reactor power supply with water cooling really offer someone just interested in great music a "better" solution?I think for many, the technical superiority is at least as ...
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I had one for about a week and was not happy. Switched to a Kenwood KT1100.
Here an honest review that matches my experience. Bottom line is that on stuff this old, the individual buyer will determine the price, not the market.
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Hi Be,the thread is about the "bad" reputation horns have with "audio" people. Applying liquid dynamics gives them more fuel for the fire, that is why I avoid using stuff that really doesn't apply. We have no real flow of air or "turbulence" in a hor...
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Hi BE,we may not be in disagreement at all. Sandpaper finish is not necessarily absorptive. I was more referring to popular HOM-treating methods like foam or using softer materials to build or coat the horn.I still have my doubts about how a rough su...
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Romy,I could not agree more! The only reason that I mention it is because we do see enough speakers with exactly these acoustic instrument problems: energy that leaks through the horn material, ringing from undamped material, wrong cutoffs (a trumpet...
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Paul,
I have been working with trumpets since 1966 and horn speakers since 1975. I have built both and am pretty familiar with what they are, the similarities and the differences.If I had to pick THE major sin when thinking about all of the horns th...
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I have read Romys post about the fine hairs and such but do not necessarily agree with the interpretation here. Romy always has a specific UseCase and makes very clear what he is after. He has often mentioned his search for interesting sound and even...
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[quote user="be"]
Horns are of course some kind of band pass filters with different kind of ripples at lover cutoff and beaming at upper cut off, according to horn type.Maybe it should be added that contributing to the horn sound idea, is that the...
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I am really enjoying myself here at Romys site. I like the idea of someone documenting their efforts in a very (self) critical way.I think that anyone solving issues in a methodical way uses similar techniques. They all involve stripping the problem ...
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What you posted on to youtube is not "sound" rather about as far away from that as one can get. The TEAC has its own sonic signature as does YouTube and anyone who listens own playback chain. There is no way that anyone can determine anything about t...
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Witti,the sound of YouTube is all that I hear. Digitized analog playback is a sort of backup, but any real advantages of analog playback are lost when you digitize so there is no LCR sound left.How did you digitize the playback?...
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I have heard some nice speakers in Germany using the Mundorf Air Motion Transformers. No saliva, ample "substance" in their tone and a very nice integration.http://www.mundorf.com/AMTnews/MUNDORF_PRO_AMT_FLYER_2012.pdfhttp://www.enjoythemusic.com/sup...
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The AMT Heil driver had an interesting geometry that has much more surface area due to the accordian principle. At the time this technology was new, they had much extended output and bandwidth due to the higher acceleration possible with this unique ...
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I really enjoy this site. Romy has a fresh view that is actually easy to understand, if one simply reads instead of interpreting what he writes.Still, a view from "higher up" is something that many of us are not privileged to. Looking at the major co...
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I have built a fair amount of tube gear and use a 2 pole 3 position switch to solve this. Up is off, middle is filament only and down adds HV. A red and green LED show that power is to the heaters and HT....
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Novigera, let's ignore any issues of sound quality first. A horn loads its drivers and increases efficiency only at certain frequencies. The frequencies that are more efficient are based on length, taper and size of the mouth. That means that it does...
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Romy,would it not make sense to PROVE that moving the speakers forward really works BEFORE worrying about the rug? If the real reason for what you are not getting is a floor resonance or reflection due to the rug or even having slightly less room vol...
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As long as the input for the funnel is on the bottom and output on top, we have the optimal horn experience in Romy's picture. If gravity works with sound, then of course we have another situation. I will assume the former.........
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Romy,I am equally surprised as my post was not intended as a flag or criticism of Haralanovs or your listening habits, rather to mention that our "conditioning" may have more to do with our perception than the technological parameters that "feed" tha...
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Romy,I travelled back from the Czech Republic yesterday and had lunch at the Pilsner Urquell brewery restaurant. A vintage wooden beer, wine or Cognac barrel would be the sexiest cabinet that I could imagine.Regards,Robin...
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The discussion of topology is interesting, but what in fact are we addressing? The factors that have been mentioned are: 1) Sound, which in this case seems to be dependent on "either you get it" - or don't2) Topology, which in my experience has so ma...
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Harlanov,I would be interested in an explanation why the topology for HF and UHF must be the same. I do not agree with this premise especially in 4 or 5 way systems where primarily the last octave only is demanded. Here there are only overtones (most...
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I play trumpet professionally, I conduct semi professionally. Neither of those two characteristics helps me with (expensive or any other) audio. Actually they are in fact more in the way.As a trumpet player, much of what I hear comes from the wrong s...
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