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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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"Do not use plastic caps ... but go for a tandem of electrolytics Nichicons with active biasing."
Hi Romy,
Please excuse my ignorance. Can you please clarify what you mean by "active biasing" -- in relation to the caps?
I'm thinking to get...
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I got my pair of F120A by-the-book bookshelves a few weeks ago and yes, in the beginning they were very much "compressed" sounding. Things improved a bit over time, but the low treble (which gives instruments their "color") is still recessed. So I ...
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Lots of good, relevant information lately in the new "Basic Guide to Advanced Audio" thread! But I don't want to orphan this thread because it is specific to speakers, which at this point means, drivers.So, germane to drivers, where should one start...
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Roman.
This last "venture " of yours is most welcome .A lot of of the people I know and most of the listeners from audio shows are always surprised when small monitors produce big bass and try to
impress with big sound. I never liked this "pushe...
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Miab, I have very limited knowledge in construction techniques, moist prevention and how all of it might affect a big horn. My very uneducated production suggests me that it is not truly a bid deal, but of cause if go this route then I certainly ...
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I'm also of the opinion that the bass is one of the most critical and most challenging parts of playback. Not talking about quantity, but rather the quality of bass reproduction. My approach has been to split the bass in two parts - Low and...
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Zdravstvui Roman, hi Chris,
I know almost nothing about the relation between sonical effect and
physics, so I will only try to speak about the latter. Take it as you
wish, I can as well delete the post if it just increases the
entropy.
...
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The Western Electric L-9 in Munich was/is an infinite baffle design. The 754B woofers are in a sealed enclosure with a front horn. There is no possibility of cancellation between front wave and back wave of speaker, so I wouldn't call it an "open baf...
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[quote user="Saturntube"] The difference soundwise in this half range 180hz and up horn module between the Leak TL12.1 amps and the First watt F5 clone was big, mainly the tonal balance is very different with the midrange sounding thin. Highs w...
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Romy wrote : "If someone discover a 4-5” driver that can have the same Syrupy Sound as the Red 10” then please let me know" I will be trying some older alnico drivers in the Mid-Bass horns (the first pair should arrive in about 2 weeks time). I have ...
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The main "technique" I use in "problem solving" involves a sort of Hegelian turning and re-turning of/to the object of attention (or, my perspective...) to get as many "views" of the object as possible. This sort of reflection has recently broug...
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fair enough- you're absolutely right, i didn't!it's difficult to get that perspective on sonics without legitimate guideposts-- even with a lifetime of playing and recording music, it's difficult to know what the parameters of recorded sound ar...
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Romy, Some very good points here... if I downloaded the correct schematic from your site for the 6-channel Melq amp (also has the term DSET in the title) then you have created a 6-channel SET amp with built-in crossover points. Your first ...
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[quote user="Ronnie"]I put together a hot tube amp channel, and gone is the sound of shattered glass.All three of my receivers were distorting equally horribly.Beware of never-been-serviced vintage solid state, I guess!Anyone know if it is common for...
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Lately the Vitavox electromagnet project looks like moved to a fruitful direction. Well, I do not know if the direction would be a real fertile but it will be going somewhere instead of talking… that is always fruitful. I have quite good support form...
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There is a speaker maker in Russia, Moscow – Alexander Kniysev who just introduced his own take on “Resonance Oops”. What he does is not my cap of tea and I see a number of issues with his design that I would object but it is not my speaker. Neverthe...
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Folks, This thread caught my attention, because here Romy waxes lyrically about the failings of the Denon Cartridges. Now I only consider ONE Denon worth bothering, the ORIGINAL 103, it is often inaccuratly called 103C. It has a medium compliance (ar...
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Hello, Pawel.
I never heard nether about Onkyo HM-300MK2 or about
anybody who use it. It looks like it is one of many obscured Japanize drivers,
and they made plenty of those. A simple googling said that it has 2 inches
voice coil, duralumin di...
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I recently completed some upper bass horns which I'm now enjoying very much. Sadly I lack the skills of someone like Jessie so my efforts are crude in comparison, but they are working well for me which is the main thing.I already had some old frontlo...
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[quote user="haralanov"] You may not believe me, but the driver start to roll off (very smoothly) after 14kHz and at 20kHz is at -6dB. I intentionally do not use it so high, because I have ultra light weight alnico paper tweeter: http://www.bgau...
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I know that I ma a wacco, so extend patience while you read it.
I was cleaning my shelves and found a strong alnico magnet that left from my field-coil. Since the electromagnet driver project was over I was about to assemble the driver back and send...
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As with all our ventures in life, the measure of our success is in hindsight what would have I have done differently. Although it is fairly early days for me yet, at the moment, if I went back to the drawing board and had to start again, I would ...
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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]I do not know certainly
how the Western Electric L-9 was made but I think it is not sealed
enclosures. Some of the drivers of the period used the semi-transparent
cloth enclosures that you, Joe, might recognized as sealed.[/quote]The L-9...
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I gave another run to Vitavox S2 with electromagnet and while I was listening I come across to an interesting observation. I screw the S3 in 330Hz horn and was trying to run it with 500Hz crossover point. It is pretty standard configuration, the way ...
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[quote user="jessie.dazzle"] For now, the amplifiers I use are a pair of Lamm M1.1s (was going to look for a pair of used ML2s, but more and more considering building a pair of Meliquaides). Using the M1.1s with a pair of V.A. Parsifal/Encore (direct...
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[quote user="Romy the Cat"]Sand damping it beautiful, it is well-recognized, but you do pay cost for it, in your case the cost is space. [/quote]I know that Romy… but without the massive amounts of sand, there are always some vibrations felt when I t...
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Haralanov,
I would not make any assumption about be’s friend who proposed that the heating up magnet describes the major difference between perm and electromagnet. In fact what he proposed I find very stimulating and to a degree might be very ...
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[quote user="Kerry Brown"] For years, I used to have passive line level filters and tube amps - single ended 45's and 2A3's.
To make a long story short I am much happier now. Screw tubes ! ( Don't hate me. ) [/quote]
Kerry, I do not think that som...
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Listening my Macondo with new “Fundamental channel” I noted that my tweeter is not as effective as it use to be. The effect of “not-effectiveness” is very minor but at some recordings it is notable. My T350 still sorts the Vitavox S2’s top but it als...
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