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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Well, I don't know if I should be ashamed of playing my trumpet in the closet...Actually, I practice often with a practice mute that works like a bass reflex speaker in reverse - killing most of the volume of tone but with a port to allow me to breat...
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Space means so many things at the same time:1) the size of the venue2) the location of the individual instruments3) the space between the instruments4) the size of the instrumentUnfortunately, we can only guess about the original venue unless we have...
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In my over 50 years of personal audio, I think that I can explain part of the speaker/amp compatibility. This opinion is everything but comprehensive.Bad matches in amp/speakers manifest themselves very often in the bass. Please consider, these thoug...
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[quote user="Paul S"]
I guess it’s time to talk about these amps in terms of The
Loudspeakers. In truth, I thought of these amps from the first time I thought
about The Loudspeakers, to the point where I “built and tested” The
Loudspeakers with...
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To be honest, I think that ANY stereo system gets in the way of the music - regardless of the amount of channels.Let us jump back to the monaural records/radio years. At that time, we had one choice and were very satisfied in being able to play back ...
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With a DSP surround scheme, we can optimize the static front image and control room delivery at the push of a button with the rear channels....
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Paul,I first got into the geometry of playback after spending some time with John Eargle when he was at Delos. He had a simple microphone setup and demonstrated how to record and playback a 22 meter stage, or 25 or 16. Many of his recordings at Delos...
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If we think about our favorite seats for "symphonic program", chamber concerts and solo performances, based on our favorite seat, we can draw the angle of view for each and duplicate that in the home. I happen to like row 15-20 in the large venues th...
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Martin Logan CLS are 85 dB efficient, so that is certainly more optimistic than ELS of old. New Quad 2912s are rated at 86 dB....
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...is the head gap in the recording head. This head gap works as a low pass filter because the size of the gap determines the highest frequency that can be recorded. This "brick wall filter" is and was a HUGE benefit to playback simply by getting rid...
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The electrolytic capacitors in the woofer low pass circuit are certainly dead. They look perfectly normal when old, just lose capacity in a serious way. The NS1000 had ferrite magnets that don't need remagnetization....
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This appears to have been a much bigger undertaking than was planned. Thank you for continuing. This site is a wonderful resource!...
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rowuk wrote:
The whole idea of an earth wire is a path to ground if something fails in the unit....
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The whole idea of an earth wire is a path to ground if something fails in the unit. In most countries the (metal) case is attached to this pin on the power connector.It is incredibly stupid (and in many countries illegal) to lift the earth wire and p...
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We have no proof what a UPS does. Intellectually, we are attracted to the separation of wall AC and our hifi. Unfortunately, that is obviously NOT the problem as too many real time UPS still sound "bad".The next intellectual assumption is that our Hi...
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Romy, crazy musicians try all sorts of things out. In my case, I can even quote some firsthand experience. My antics with the trumpet and tuba simply add to my experiences.I have the huge luxury of having played Bruckner on vintage low "F trumpets", ...
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If I play my trumpet into a tuba bell and the tuba player just moves his fingers without playing, the trumpet tone is modified and sound like a mandoline. In addition, the upper register becomes almost unplayable due to the modulation affecting the t...
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For my ears, the piano is rich in harmonics that change with playing volume BUT the only way to get a louder note is with the hammer striking the strings more powerfully which always is coupled to a louder "articulation". Violins and wind instruments...
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I remember Romy proposing different drivers covering the same frequency range. I think that this is it:http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=12261#12261...
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I consider the piano to be a "percussion instrument". There is no steady state "tone" and no crescendo or decrescendo (dynamic) change once the tone is produced. This means that for the current discussion (at least viewed through my perspective),...
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This is a very good question, but there is a lot involved.Tying "expressive/drama" factor to frequency range is very real. With a trumpet (and a soprano voice for instance) I would say that we change from dramatic to spectacular above the soprano sta...
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Interesting video. It is a compelling argument for open back, infinite baffle or transmission lines designed to completely absorb the back wave. Everything else simply works much differently than we want to believe......
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[quote user="Edgar="]Not Amplitude. It's the rock solid phase linearity. It feels like a brick wall all the way up and down. I haven't looked at any graphs and haven't measured anything but that is my guess. There is no question of the great tone of ...
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[quote user="AudioArchitect"]You should find a life somewhere!You have really big issues with self image, big fragile ego, Dunning Kruger mental illness, and manybof my friends who are medical clinicians read many of your articles here, and they told...
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I think that the discussion of extending response (especially LF) is the WRONG direction. We know that the Macondo/Melquiades setup had more extension and integration than is even possible with Dunnoys. I am not sure why this is even getting so many ...
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There has been one year of frustration about something that "shouldn't" work. I will maintain, if we want another go, then we have to hook up Melquiades/Macondo and get our ears back to where they were. Then we repeat the Dunnoy experiment. Maybe the...
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The Fs resonance does have its width BUT that means that the 30 Hz PR resonance out of my example is excited when the driver is not exactly at 30 Hz (not that a 30Hz PR can resonate at 32 0r 28Hz!). By definition a Helmholtz Resonator has one frequen...
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The passive radiator is simply put a closed box Helmholtz resonator with low "q". What does that mean? It means that the passive radiator only resonates at its tuned frequency and its multiples - regardless of the frequency radiated by the driven woo...
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Let us suppose that one manufacturer figures out what the grid is doing and how to solve it - in his own amps/preamps/DAC. Does that help us? Only if we happen to like their products...As the "high end" market is truly sick, the solution is always to...
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I think that the load transient response is 100% in the device power supply - not passed on to the grid. If the amplifier power supply is not properly dimensioned, a UPS could change the sound, but only because of the amplifier deficiency. It would m...
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