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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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N-set, of course the finish flooring is supported by some sort of structural "members". These MIGHT be reinforced concrete, and so MIGHT be quite strong, depending on the whims of the builders at the time of construction, and considering any loss of...
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Paul, I did not dismiss result-oriented solution. I'm fighting hard to get one actually. Honestly, I initially hoped that brutal mass loading will be enough to deal with what I have,and as a bonus I'll have a +/- universal solution I could move when ...
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[quote user="Romy the Cat"] I know at least 3-4 other people who very much like me bough in the Koetsu hype and bought the top of the line Koetsu needles. All of them hate it. The point that I try to make is that if the vintage Koetsu were so good th...
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Mani, my first thoughts were questions, whether you want to fill the room "like headphones fill your head" or you want to aim the speakers right at your ears and "do the mixing inside your head, like headphones". These are two mutually exclusive app...
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"Best bass" is of course a matter of opinion based on experience and expectations. The (original) Hartsfield LF driver is certainly "designed for horn loading", like the Vitavox AK-151, whereas the AK-150 and the JBL D-130 are designed to be direct r...
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Josh, I do not have a
definitive answer to this question with witch I feel comfortable. I need to say
that I had a multiple experiments in multiple audio fields and I always felt
that excessive or too limited magnetic force is not always complimen...
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Wiki and google are not the best, but is a start:https://en.wikipedia.org/wiki/Compression_driverMass related horn issues:http://www.positive-feedback.com/Issue4/edgarinterview.htmhttp://volvotreter.de/downloads/Edgar-Show-Horn.pdfHorn loading:https:...
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[quote user="anthony"]You get three octaves of horn loading and then the horn attenuates the signal at 24db/octave below the lower knee and 6dB/octave above the upper knee. So a horn with a lower knee of 42Hz will have an upper knee of about 336Hz r...
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Jessie, yes from a perspective of general horn propaganda your post it correct but from the perspective of “reading the back side of the midbass speed bump” I would argue that it has nothing to do with horn loading. Look at the notion widely. I would...
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[quote user="Wojtek"]" The only concern being that ML2 is a feedback amp and Mel not. [/quote] And it is exactly why Lamm is able to drive more or less successfully those sub 90dB loads but Melquiades is not. The SETs with no-feedback are VERY sensit...
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I understand your point of view concerning 'vintage' in comparison to 'contemporary'. What I find the most troubling with many of the present/contemporary attempts in design is that many people claim to have a truly horn loaded system capable o...
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Zanon, you seem to feel that RTA has some intrinsic value. In any case, in terms of results, I think you already have a sense of where this is going. If you are bound to use your present speakers in a room you yourself deem too large for them, t...
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Romy, even though code-conscious electricians install your special ground rod for you, they will still in all likelihood want to tie the neutral wires from your dedicated 30A lines back to the ground bus in the breaker box where they get their 30A fe...
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Romy, I do agree with all your comments. It is true that the magnitude of the rubber taste very much depends on the crossover frequency. I used them below 64Hz, but with first order filter, implemented before the amp that drives them. With that kind ...
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HiWell, yes, I'd seen your post, and having sampled the results, heartily agree with you. The only reason I didn't immediately return the screen was that I'd like to make a measurement to see how the response has changed, so I can compare when the la...
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The Bass OPT's for my DSET have been wound. We have come back to a 1000R plate loading and into 1R the 6C33C grid clips at 9.36W and 5.8% distortion. The -0.5dB points at full power are 5.9Hz and 5kHz.A nice result really, and about where I thought...
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[quote user="miab"] I'm curious as to why the preference to paper cones as opposed to carbon/poly/kevlar/ceramic/.... With weight and stiffness advantages of other materials, would advancing technology not be well implemented towards drivers? [...
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Tim, the cable loading is not what I meant. Purist does like higher current across the cable but which cable does not love it? Dave Clark described very well some of the aspect of usability of POD cables (like disturbance). Some of them he left out. ...
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Now we're talking!Romy, I have long nodded in agreement with your observations about the critical nature of "plate loading". Meanwhile, my own recent experiments have shown that dialing in voltage and current is just as Big a Deal with SS as it is w...
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[quote user="Romy the Cat"] The second solution, that I order of magnetite more enthusiastic about, I will keep for a time being secretive but if it work then it will be the most ridicules and the most affective idea that I have seen in tube amplific...
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Ok, let dive a little bit further into my examination of the subject of Lamm ML3
What is important is to undusted that my view less targets the Lamm ML3 but rather it targets the ML3 as a representative of entire class of amplifiers. When I to...
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Rony,
After reading my post about the undersized core (for the given current) of Lundahl transformers you might be an impression that Lundahl are some kind of second choice. The undersized amorphous Lundahls forum is second chose for an ultimate ful...
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[quote user="nl"] I have used Russian high-gm tubes like 6C45 in amps before, including single-stage designs very much like Romy's single-stage Milq. These have many attractions. However, in my experience it just didn't have the tone. Jim de Kort of ...
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Yes, I do feel that letting a diaphragm to idle less (means
more loading) you can tame the code resonance, and the ringgy metal cone in particular
but it might be done in context of worsening upper transients and over-damping
the lower driver knee...
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[quote user="Gregm"]It doesn't seem prudent to look at the speaker without considering the amplifier at all. We would be designing a speaker that would work with a theoretical amp -- but not one that's available.[/quote]
You are right but the opposi...
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[quote user="Romy the Cat"]
Andy 1) Actually the most interest was in the fact that I was not asking two questions but one question at the same time as I see both of the questions are inner-related. I was under presumption tha...
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In terms of the length of the horn, I'm allowing myself a total height of 7'6" (just below the average ceiling height of 8'). In regards to the mouth diameter, that's another matter. (It appears that I will have to build two [2] different...
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In the linked there above “Barn Conversion - James' Project” I have expressed my attitude toward low frequency bass. I certainly not “against” bass horn it but have “concerns”. The “open bottom” concept that I invented for myself is always make me to...
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[quote user="jessie.dazzle"] The AK150 and 152 are not new creations dreamed up by Mike; they were made back in the day by Vitavox but nobody ever talks about them and I have never seen either. See the Unofficial Vitavox web site; AK150 = Catalog...
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Back in end of 90s, we read articles by Thomas Dunker, Joe Roberts, Bruce Edgar, and many others (some of them were designers and some of them just publicists) who were trying to persuade that horns are some kind of advantageous topology and that...
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