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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hm, it is complicated. In context of ported enclosure (or passive radiator) it is imposable to talk seriously about the box resonance as a speaker/driver has no own sound but rather a summation of zillion resonances, aftersounds and the rest dirt tha...
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[quote user="TonyB"]Romy, what are horn flare frequencies of your horns? I understand that both are Tractrix. My guess is that the midbass is 125Hz with a sealed rear chamber and 4" throat. Correct? [/quote]They tunes for 115Hz and pushed in room dow...
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Hey Romy... you could be right about the ALE's.. I certainly did like them, but when I went back to that familiar recording it was definitely shelved down low.. it would be easy to assume that I thought that they were "lightweight" because I had...
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I also find SET bass to be the overall best I have heard - at its best, and this has been, as you observe, when the amp is well within its comfort zone. And this seems to remain true even when Z out and speaker load "matching" are har...
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Romy, are you saying McMasters-Carr does not have anything you can cut and/or bend and/or punch to your requirements?Otherwise, you know my view on the sealed LF; they just soak power, so why not give it to 'em (and then some!)?That ought to about pu...
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Actually is not mystery but juts economics. BTW, the large Wilsons are I believe are not juts ported but so called fourth order design. With a sealed enclosure of the identical size the Grand Slam / Alexandria would go in Stereophile category of spea...
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[quote user="Romy the Cat"]I, looking at my “7 reasons” do have a preference to sealed boxes. I do not believe in accuracy of bass horns, particularly in context of system integration.[/quote]What made you change your mind?...
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I have been playing around with speakers for a long time, and things started snapping when I got into horns. I have a system right now with an upperbass horn from 140 hz turned form MDF up to around 700 hz, to another horn, and another and a super t...
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Romy wrote (in the "It’s mad, mad, mad... electricity." thread):"...I might not have enough power in new room for my woofer towers and it would force to use class A/B SS amp..."You've mentioned on more than one occasion how much you love what you...
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Got the ultra low DCR toroids coil and pit them in use. Yes, it was very right move and they a bit trimmed the midbass tail. Playing with inductance and listening how the midbass decays (measurements are worthless in this case) I ended up with 4.8mH ...
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Let's say we all have a midbass horn that plays down to 80Hz. I know some of us are special, so their midbass horn plays down to 40Hz. But still.What to do for the lower frequencies? Sealed or Infinite baffle (that's two good options). Now we need a ...
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To save people from researching the differences between Romy's and my systems, I'll note the principal differences here, ignoring our ongoing mid-bass projects, which will be different, but both are incomplete, so not yet in the picture.As concerns t...
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Romy wrote:"...What kind outer suspension it has, is it rubber?..." Correct (I know I know...)"...I think the key factor would be the degree to which the driver is able to decimate the LF pitches..."Pitch: The property of sound that varies with varia...
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OK, maybe I got too zealous with the notch filter for the Reps. I aimed to bring it down 6 dB at ~2.2k Hz, using .47 mH and 10 uF against 10 Ohms for the notch, with the Reps itself at 7 Ohms. Right now, drums are too backed off, there is no "hair"...
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I'm of the opinion that listening room aesthetics play a big role in enjoying music at home. This is self-evident, but over the many years playing with audio, my listening room has become incrementally cluttered with "audio detritus". It's ugly and...
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With that big horn covering such large frequency range I feel there would have a hole in the mid-range, or in the upper-bass. Not that I am supposing the information is not there, but it should not to be in there with reasonable "quality".I had not i...
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Interesting. with sealed 280 sq feet and 8 drivers per side along a long wall you very much migh be able to use a singe 6C33C. With proper loading, good trasformer, DSET and these drivers you should be able to get bass that I doubt you will be able t...
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[quote user="steverino"]I agree that the published curves don't look bizarre for a box speaker. [/quote] Hmmm, I would like to note that my reference to "given topology" did not imply the "box speaker". Even a multichannel box speaker might have opt...
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[quote user="Murataltuev"] anthony wrote:This configuration should give somewhere around 109dB @ 20Hz from 15w in room with cone movement of about +-3.5mm. That is still low excursion, and they are excellent drivers. Well, in this case, I also hav...
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I am using sealed bass arrays of 3 per side. I have six 10" scanspeak woofers in total. I aim to operate them from 38hz to 160hz with qtc 0.707I also have a tapped horn that I am using with my current horn system. It is 244cm's high and 125kg's compl...
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A $$$ solution for a bass array that comes into my mind are the sandwich cone drivers from Accuton.Monstrous neodymium magnet, underhung voice coil (for low flux modulation).Very low Fs.Relatively low QMS for use in sealed enclosure with transconduct...
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Hm, I like the Cessaro thinking a few years back and I love it now. A very good move with this “Liszt” loudspeakers, even I am against the idiotic tendency to grand to the audio element the composers names. Take a look what Cessaro did. A tweeter, p...
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You will find a very basic motto or life theme here that keeps recurring:Random efforts produce random results!In relation to audio, this means that buying somebody elses best of everything does not lead to a personal superior result.Basically proces...
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Thanks Romy,I was hoping to hear that you remain happy with your midbass solution and was surprised at the time about the small cabinets that you used for the Vitavox 15"ers, but having measured T/S parameters of the drivers here I can see that indee...
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I have 2nd order crossover both on the upper knee of the ob bass section and on the lower knee of the midbass section. My measurements show phase response and the summed spl is as good as it can get. Have you tried the direct servo technology or do y...
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The kids are growing up and twins sleep fine and walk already.
So, the Bessnow’s household is calming down, a live-in nanny for sure helps…
With more time at my heads I am trying to finalize my playback in our new home.
I spent a few hours today t...
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Anthony, it is not the subject of this thread but I am replying you since you raised a question. Is there are a lot of conspiracies about Tannoy vintage crossovers. They did many different versions and all of them well known. If somebody need I can h...
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I've had a long-time desire to replace my Edgar 80hz midbass shells with a better performing solution. My Edgarhorns arrived in 2005, and I made incremental improvements over the years until now they have little in common with the original Edgarhorn...
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[quote user="el`Ol"]A $$$ solution for a bass array that comes into my mind are the sandwich cone drivers from Accuton.Monstrous neodymium magnet, underhung voice coil (for low flux modulation).Very low Fs.Relatively low QMS for use in sealed enclosu...
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[quote user="Romy the Cat"]Output transformer. Here is
what the thing become complicated. Of you drive ultra-low impedance with step
down transformer then your secondary turns will decrease. They primary will
have whatever they have for all case b...
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