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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="Paul S"] I remembered a host of "old" drivers from my past (not old at the time...) that, if memory serves, sounded rather muffled and slow, with humped response[/quote]Yes, Paul, that's exactly the way they sound in their original condi...
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[quote user="Paul S"]All I want is wide-range drivers as fast as a Lowther DX4 [/quote]Paul,
I have listened DX4 driver. In my view
this fastness that you report is completely artificial and absolutely non-musical
as it does not have any relation...
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Paul, the
problem could be unsolvable if this peak is due to cone geometry. Flat cones in
general behave very good up to a certain frequency, but they have strong standing wave
mode (its magnitude depends of...
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[quote user="Romy the Cat"]I think to conduct any more or less methodologically cleaner experiment the best would be to have the field coil with multiple taps. Make the coil standard 600V rated and to design the coil to have let say 4 taps that ident...
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[quote user="Paul S"] I took a couple of pictures, but I can't figure out how to upload them, just yet. [/quote]Hi, Paul. Take a look here http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=1120 [quote user="Paul S"]I took out the phase plug, a...
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Paul, I need to see some detailed pictures of your de-whizzered REPS driver including the visible part of its the voice coil and how it is attached to the cone in order to give you any recommendations how to tweak the driver. You can start a new thre...
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[quote user="Paul S"]... VERY SHARP resonance I want to damp[/quote]Paul, this sharp resonance peak is indication of time domain problem (it could be seen on a CSD plot), and it cannot be damped just by using electrical circuits with the driver, beca...
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It’s a bit offtopic, but:[quote user="Paul S"] I haven't seen anything like this in over a decade, and I don't have the patience to wait until I find and acquire something like this, IF it exists. [/quote]The problem is that it does not exist… Simply...
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[quote user="Paul S"]For the Reps I will use a 2,200 Hz notch filter for its peak[/quote]Paul, why don’t you try to fix the problem of the Reps driver instead of notching it? There is a reason for the peak and I do not consider the problem could be s...
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Moreart, believe me or not, but I perfectly understand your constructions – they are nothing more than a simple reflection of your own way of thinking about audio and sound - just a pile of glued wooden panels without any audio based motivation behin...
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[quote user="moreart"]Hello,tell us the similarity to my double horns please[/quote]The fact that your "horns" have double mouths does not change anything. You are trying to compensate the irregularities of the response using differently tuned pipes ...
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[quote user="moreart"]oh yes, show me ![/quote]Just an example:I can show you at least 20 other backloaded horns with different drivers which I have heard here in Bulgaria.Moreart, your main problem is the quality of the drivers you use. All those fo...
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Moreart, 6,5" and 8" drivers are not big enough even for reproducing midrange, not no mention midbass.You say (quote taken from your website):"By processing certain overtones selectively, a rich bass effect can be created using the small speakers whi...
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Here is a VERY interesting paper http://www.anstendig.org/Stereo.htmlSTEREO: A MISUNDERSTANDINGTHE THEORY, SOUND-SYSTEMS, AND PROBLEMS OF HEARINGThere is a common misconception that the addition of stereophonic sound-reproduction was the necessary, c...
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[quote user="Romy the Cat"]A one of them, that has even a huge damage as 1” rip is my absolutely best driver – tonally it is totally out of this word. It is possible that it has to do with moisture and other conditions. [/quote]Romy, would you post d...
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[quote user="Romy the Cat"]I do use some vintage elements in my playback but I use them purposefully. I recognize their strengths and weaknesses and I capitalize on the strengths only. I think this is the only sane approach I see; when some vintage ...
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Romy, you said there is no proper tone. In your old system/room setup you were very close to the back wall, but now it is far behind you. I'm probably wrong, but I think you don't have proper sound in the mid-upperbass with this configuration which ...
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[quote user="Vasyachkin"]the only real questionable aspect here is adding a second set of back firing, inverted phase horns. mathematically speaking it is what the design "needs" but of course the real question is - what does it sound like ? that's...
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Romy, you could hire a super silent generator like this for a few days :)...
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[quote user="cv"]Yet, I don't think the "safety" aspect may be neglected; I suspect he feels more comfortable with coils running at low voltage than (what I guess was) 200-400V or so. [/quote]Yes, you are right. But it must not be at the expense of t...
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[quote user="Romy the Cat"]So, you feel that high voltage filedcoil do excite the electromagnets driver somehow?[/quote]I will not call this exitation, let say it dynamic stability.[quote user="Romy the Cat"]What voltage you feel is appropriate?[/quo...
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Romy, I will not comment the first part of your
post, because it will be offtopic. Let concentrate on the subject of field
coils and particularly on the difference between high impedance high voltage
fieldcoils and those using thick low impedance ...
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[quote user="Romy the Cat"] your diver might be a very good MF diver but it does not go to region where the “tizzing” live.[/quote]You may not believe me, but the driver start to roll off (very smoothly) after 14kHz and at 20kHz is at -6dB. I intent...
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[quote user="Romy the Cat"] Haralanov, I do not
mock you, I juts report the facts of my past experiences. [/quote]No, you do
not mock me. My experience is exactly the same.[quote user="Romy the Cat"] In fact I personally fee...
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Be, I have made a lot of experiments and I confirm that if a permanent magnet (Ticonal, Alnico5, Alnico3SC) is heated up, the sound gets a little softer, but the typical "screamyness" is still there as if the sound comes from a very little zone, stuf...
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[quote user="be"]I just spoke with a guy who have made both permanent magnets and electro magnets for loudspeakers.He said that the reason that electro magnetic speakers have a smoother and more grain free sound, is due to the temperature rise in the...
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In my view the most appaling sound feature of nearly all "high end" loudspeakers is the lack of any tonal qualities. Over 90% of them sound completely artificial with no tone. All those ceramic, kevlar, magnesium, polypropylene, titanium, carbon nano...
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The idea of using this type of midbass horn seems good, but I don’t see a solution for time alignment of the horn with the other channels. You have a freedom to physical align it if it is placed in the same vertical plane with upperbass mouth, but th...
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Moreart, I don't know what your sonic objectives are, but Visaton BG20 is one of the worst performing drivers available, no matter how it is used. You call this construction "double horn" - is that a joke :) ...
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In my view the leather as a suspension material is absolutely spectacular and this is because it's mechanical impedance is very close to that of the cone (of course made of fine paper) and there is no energy reflected from the surround back to the vo...
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