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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Thanks Romy. On the AC polarity do you mean playing with the player/amp polarity or with the PP one? I always try to have all devices to be in phase.Denis...
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And just in case some of you question my AC wiring, I have a separate panel with dedicated 20-amp circuits, all 'in-phase'. In fact, I put even put in a 30-amp dedicated circuit just in preparation for use by PurePower+ 3000....
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Hello, Ulf.
Interesting. The TAD1201H is 12-incher with resonant frequency of 50Hz. It has relatively low resonant frequency for 100Hz Tractrix midbass but you most like used 10” thought and consequentially shorter horn. The shorter horns beam...
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...Or plug all but the desired LF exit path? This might not have the same compression ratio a stock though. Well, I am still learning about how phase plugs operate.Neil...
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Tweeters Alignment - what is a bitchy subject! I was mildly complaining about it for years and during the last few weeks I complain about my own tweeters - primary because the very same issues of the imperfect alignment. This there is a derivation of...
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Yes, I have recognized those “flatted-ended” Edgarhorn Horns that I will be spending this weekend to correct. By "plugless" I meant that the phase plug will be removed in my fundamental channels as they would not be necessary in there and should prov...
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Vaseline;-) is easily wiped off...My speculating request was concerned to the idea of a bent bass horn, a mid-bass and other ways "almost" (phisically) in-phase... apparently so, as it's only moved at the back... not really aligned - i.e. how can som...
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[quote user="Romy the Cat"]
[quote user="tuga"]I can't find a/the post(s) where you describe the advantages of using a 4 inch throat. Stereo-lab makes both 4 and 8 inch throat 140Hz horns but I don't think they could make an 8 to 4 inch adapter... [...
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Just how important are subharmonics and undertones in audio, and how they affect tone? I played around for a while with the Townshend supertweeters, this is a ribbon tweeter that you can barely listen to: you plug it in and put it next to your...
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[quote user="jessie.dazzle"] Assuming you go ahead with the mid-bass horn project: If you decide to run the woofer towers along with the mid-bass horns, it is logical to assume they'll produce much of the range produced by these new horns. [/quot...
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[quote user="vinylithicum"] Here are some of my observations regarding the Wolf von Langa RCA 1428 replica. I long time wondered where mr. von Langa gets his phase correction elements and the diaphragm for his RCA 1428 replica. It's obvious that ...
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1) Horn loaded drivers are narrow-bandwidth transducing system. The wider range a horn channel covers the more it conflicts with restrictions of own topology.
2) All channels shell have strictly parallel axis
3) All channels shell be time-a...
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[quote user="Markus"]I usually manage to read you quite well, but this
Romy the Cat wrote:
direct or indirect phase constructors.
has me baffled. What do you mean, please?[/quote] When I wrote it I meant different ...
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Romy,
I tried non-symmetric crossovers (freq and slopes different for channels) but had to go back to symmetric because the phase response sounded very wrong to my ears. I learned that I could get used to a bad fr...
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I was sit today to do the calibration of my infinite baffle.
I connected my 20Hz 4th order tube crossover with frond-end modified
Yamaha B-2. The RTA did show a very easy gain exactly where should be, the
transition slope doe the magic. I rolled ...
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[quote user="jweiss"] It was good to finally meet you at CES at the Cogent Room. I guess that you really found Steve and Rich's drivers pretty interesting (you initially wanted to buy a pair of the midrange drivers, remember?) [/quote]
Hi, Jonathan....
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[quote user="morricab"] I guess I view absolute tone a bit differently than what you describe. I think that each real instrument or person (as in singer) has its own "absolute" tone….[/quote]
Actually when I was taking about “absolute tone” I ...
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Preamplifiers: keys to mystery – or…. how a preamp might be not only a load-driving gadget.
Years after years the preamplifiers are being a “terra incognito” of audio people. I admit that preamps are a subject of my persistent curiosity. I was alway...
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…and since it is in LL line I presume that it might be right along with LL2 Preamp – not particularly interesting preamp. In other words it is most likely the “positively expected” and “might be interesting” continuation of the L1 and L2 line.
...
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[quote user="Romy the Cat"] 1) Horn loaded drivers are narrow-bandwidth transducing system. The wider range a horn channel covers the more it conflicts with restrictions of own topology.
2) All channels shell have strictly parallel axis
3) ...
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I should have said UP or Down in the listening chair. Toward and away from the speakers will also do it, unless you're sitting midway between tweeter and mid of course, but not to the extent of up/down will.I just did an experiment with some fishing ...
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I most likely do not talk about decays or noise. It might be some kind harmonic inflictions in ultra low frequencies that have longer reverberation time, I do not know. What I do know that when playback enters a state of sonic audio silence some play...
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[quote user="Romy the Cat"]
Macman, the “annoying peaks above the usable frequency range” is something that your specific installation might have in context of your room and your acoustic system location but it might not be a characteristic ...
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[quote user="Romy the Cat"] Whoever follows the Pacific Microsonics threads, or whoever use Pacific know that both Models one and two have an interesting idiosyncrasy: at maximum sampling rate, when Pacific runs in dual-wire mode, the clock runs at ...
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[quote user="jessie.dazzle"]I've been listening for about one week now with the filters set so the hand off from lower-mid to upper-mid happens higher up (upper-mid S2 is high-passed at 4800Hz instead of 3200Hz), meaning the small 400Hz horn is doing...
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[quote user="hagtech"]Yes, steel chassis can be both good and bad. It likes to conduct magnetic fields, so you have to treat things appropriately. A little spacing under a choke can go a long way. Otherise you have a 120Hz motor.&nb...
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[quote user="Romy the Cat"]You absolutely incorrectly, in my view, look at the data. The files of cause do not have the same start mark. Why shell they? I did not subtract one from another. You did in phase the files and did the subtraction but what ...
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[quote user="drdna"]Now fully five years after the original PP2000 was in my system, then subsequently stopped working and was sent back for repairs to the manufacturer. An unfortunate series of events involving the Chinese subcontractor resulted in ...
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Thank you Clark for your comment.Unfortunately, I think that you missed the point. It is possible that a power cord can change things. The description „better“ is a moving target however. Let us take for example a „full range“ driver in a backloaded ...
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