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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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The direction of lansing was the main factor of speakers not W.E. Just look at the phase plug on the W.E HF drivers and look at the phase plug on the lansing Hf drivers this is were it all went down hill. Your mid and Hf drivers from lansing took the...
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One thing to bear in mind with the bass horn delay - I thank Tom Danley for explaining all this a while ago - if I understand it right, a small direct radiator (ie small in relation to the wavelength - which will obviously be the case with ...
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Stephano Two good ears has put a post on his site about his new 4 way passive xover.I think this is a better direction than the digital xo. The designer, Thomas, designed also the preamp and I guess he has taken into consideration the input and ...
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Chris, yes and no. The phase shift 90 degree of there perhaps but it is not really relevant. If we have a very low frequency horn, crossed low with high order crossover and the entire horn is delayed at 30ms then we do not have the same negative impa...
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My current speakers are Edgarhorns with the straight 80hz upper-bass shell. The bass never sounded correct to me. The problems with Edgar's mid-bass are well documented at this site and elsewhere. I tried some simple modifications to the crossover...
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It is new thing. Yep, I was right. As turned my right LF channel
out of phase with my left channel I got my bass back and the super hasty brittle sound was gone. The right LF channel
should be running out of phase with the rest of system as it has ...
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[quote user="zanon"]…. I have a sound bar for my TV which manipulates phase so you can pick between the audio seeming to come from a wider source, or from a focused point source. So, for your action movie set it on wide, and for your period piece, se...
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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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[quote user="ulf"]Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn so...
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What was wrong was that I do not have a proper evaluation method/ability of Sound and piled up my system around the Reps driver with an intention to overcome the obvious shortcomings under the way I've been listening to jazz. The result wa...
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Romy, if you have some spare diaphragm/VC assemblies for your S2 drivers, do the experiment I mentioned above (remove the outer layer of the VC) and we will talk about the inductance in terms of sound after you hear the results with your own ears... ...
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[quote user="Romy the Cat"]Unicon, I do think that you deal not with phase but with damping and resonances…. The Cat[/quote]Romyto be saying it carefully the main sound change i encountered is the RESONANCE which surely deals with TIME . and talking...
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[quote user="el`Ol"] I stopped believing in phase as the most important cause of coherence when I listened to the Lithophon Miracle and believed to hear exactly the opposite of what I am used to with cone/dome speakers: woofers that dynamically don't...
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Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn sound.The improvemen...
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Looking again at the EdgarHorns, the placement in the room seems nearly optimal and they are now properly time aligned. Looking at the phase of the individual drivers and listening to each of them individually revealed that the tweeter was wire...
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THE ONLY COMPANY THAT HAS ADVANCED THE DESIGN OF A MODERN DRIVER IS JBL,,, GOING FROM THE WESTERN ELECTRIC DESIGN TO THE 375,,376...PRO VERSION 2440,,2441... TO the 2450 types..USEING COHERIENT PHASE PLUG DESIGN TOPOLIGY that unit was adapted to the...
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[quote user="yoshi"]What was wrong was that I do not have a proper evaluation method/ability of Sound and piled up my system around the Reps driver with an intention to overcome the obvious shortcomings under the way I've been listening to jazz....
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IN THE NEW DIAPHRAMS,,,LOW MASS HIGH STRENGTH AND HOW THE PHASE PLUG IS DESIGNED HAS A CORRILATION OF WIDER BANDWIDTH AND LOWER DISTORTION...BUT JBL ADDED ONE MORE DESIGN TO THE EQUASION,,,THAT WAS TO REDESIGN THE DIAMOND PATTERN OUTER SURROUND FOR S...
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Romy , you are right , pure power affects on wall AC quality, when a pp3000 is connected to wall ac (the TV not connected to PP3000) then the picture quality of my TV decrease. allways I use only one pure power 3000 and other pure powers are disconne...
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[quote
user="martinshorn"] What Klaus also highlighted, is the importance to
him to unlimit dynamics - in order to achieve the most live-alike sound. First
of all, he noticed that Goto pleases him the most with uncompressed transient
attacks more...
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Although all of it has no relation to digital crossovers but still:
[quote user="cv"] On a vaguely related note: I dunno if you realise this, but conventional (ie excluding horn or large area ESL) speaker systems, even if measuring flat amplitude, i...
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[quote user="Romy the Cat"]since I know that you do not deal with horns and discuss it only as theoretical exercise I am not sure what we are talking about. [/quote]Hahaha :-) This experiment was made a few days ago by a friend of mine who is speaker...
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A mix of conctrete and steel skeleton is a very good mixture, particularly for the upperbass horn. BTW, go not be “disappointed” that you did not go for Tractrix. The Tractrix has many advantages but for the range where you operate I hardly see any a...
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Just like my idle mind to finally start wondering about phase (with the filter and the two stages). I think I remember you said you don't generally worry about phase: but most of us notice at 180 degrees.In case of such a serious problem, a seri...
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[quote user="el`Ol"]In one point you win, obviously the speaker panels were not really infinite indeed.http://www.thomas-schick.com/Siemens.htmBut when the frequency where the dipole acoustic short circuit "kicks in" is clearly below the Fs of the dr...
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Ygoh, Most of compression drivers have phase plug. A phase plug is very genomic center line oriented devise. A phase plug must be parallel to diaphragms and perpendicular to the axis of the driver. Practically all compression drivers have beggin...
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Regarding L1 and L2 outputs and bi-amping:
Romy wrote:"...The unfortunate part is that if you still intend to run a dedicated cable to your let say LF section and if you use Lamm preamp then you can’t... his preamps (L1 and L2, I do not know h...
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Well, I don't know about 3-phase for a residential water heater. It sounds like the electrician would be a good idea. I do not like the idea of different phase hot lines sharing a neutral or ground wire for split circuits, and especially not for hi-f...
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[quote user="PurePower"]We routinely operate our 230 volt models with two phase +/- 120 volt input.[/quote] That's interesting. I use a couple of 5KVA balanced transformers. I tried to feed my 240V PP2000 with one of them, but the output was non-symm...
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Continuing to harass the readers of my site and myself with the good news about the performance of my SA8535 driver I would like to post a very educational article about the subject. As I told before, being familiar with sound of ribbons then never i...
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