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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Please help me if you have any experience with PP3000.
now I have dedicated AC line (the line is three phase system ,phase 1 and 3 connected to home and phase 2 connected to my audio system) and a good cable replaced the building wire between ...
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Impedance not. Gain yes. I've basically copied Millet's implementation:http://www.pmillett.com/tube_active_crossover.htmand I looked at the plots there. This dip around 370Hz is a mystery, the rest I think now looks ok....well, now when I look at the...
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3.25" throat, 200 - 20kHz, beryllium diaphagms, radial phase plugs, field coil motor.http://electronluv.com/html/drivers/My%20Gallery/index.html
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Romy:I learn something new today.Let me ask this then -- when you see multiway horns, where the throats and openings are all over the place, I often see you comment "these people do not know anything about time alignment". I thought it was because yo...
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In one point you win, obviously the speaker panels were not really infinite indeed.http://www.thomas-schick.com/Siemens.htmBut when the frequency where the dipole acoustic short circuit "kicks in" is clearly below the Fs of the driver, everything "di...
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[quote user="msaudio"] Every frequency above 80 cycle's should be coming from the front of your listering position, next to macondo. [/quote]thats correct the worse thing you can ever do there would be trying to get your upper bass 80hz above from t...
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Something they mustve obviously done better than others using beryllium. Judging the sound. In a positive way. The lower 3 are titanium, but all upper 3 are 4/3/2 inch BE sourced from truextend. The suspensenion however is soft and allows excursion.I...
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Very amusing and also so very true. I can recognise all 7 of those phases in me. Although to be absolutely fair, I still buy too many recordings to "take the time to enjoy every one" so I haven't quite achieved the fullness of the 'Maturity' phase....
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I’m absolutely certain that the mids and lows are designed in the same function supporting fashion as I described the compression driver. Danley explicitly explains this in his patent. For my own amusement, I went through all the math and calculation...
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Maybe this link will work, so others can see the original WAMMs I have been referencing. Yes, they had "phase issues", but - like I've said - I have not since heard better from Wilson.http://www.stereophile.com/taxonomy/term-a/168?page=8Scroll dow...
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A few days back I visited an audio person who demonstrated to me his experiments with extreme lateral deviation of souses. Regardless if I agree or not what he was doing or trying to do the demonstration has an unexpected result. One day I was driv...
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Hello Romy, thanks for your guide.I've been thinking and I feel that some basic upper bass channel ideas are forming; they a result of, as you say ,"organic" derivation from the rest of my acoustic system. I am pretty excited about this idea i have. ...
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I would rather to hear from the people who use tweeters over 10K to comment not about the “quality of the tweeters” but about the quality of amplification and the quality of electricity that they use to drive those tweeters. The better tweeter it is ...
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Clark, How sad that I didn't know this "nothing" 15 years ago (including yes the effects of polarity and phase), but I'm always the last to know. And how strange that following the logic of this "nothing" (and this thread) has suggested a number of...
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Hi George,We did find an email response from Damian to you in early 2010, suggesting that we could think of no technical reason that a PurePower unit would have a problem with +/- 60 volt input. We routinely operate our 230 volt models with two phase...
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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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Like I said, Yoshi's gift of de-whizzered Reps got me thinking of better efficiency and more "weight".So far, I've got this:A pair of Eminence Kappa 18" in ~ 6 cu. ft BR box to ~250 Hz; de-whizzered Lowther DX-4 PLUS de-whizzered Reps ...
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and tracing the polarity back to your electrical service can prove useful, even more so if you have 3 phase power. I’m sure this has been covered but I’ve been away a while....
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I've always found on her studio recordings (not as much on the live ones) something strange to PB's voice. Thanks for the info. I've noticed that effect in other artist's recordings, but probably due to the fact that they did it worse, sometimes much...
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You have to consider the latency in DSP ULF solutions (regardless of filter settings). It is considerable and if the rest of the system is phase aligned, there may be some problems in location of the ULF drivers.
[quote user="Paul S"...
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Romy, i hope this post doesn't offend your sensibilities. I am not gonna say a word about the physics principles that have led me to the conclusion that this is something that should be tried ( unless you ask of course ).
The idea i have is...
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Hi romy,Have you had a look at the website recently (site address above in marco's mail), they have very detailed discussion of midbass horn with photos of phase-plug etc. unfortunately it may be only in french ...R Weissman...
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Two basic premises:A) The concept we all operate on is: a chain of components connected between one another that pick up info from a medium, transform the info into ac and amplify that info; then, we attach speakers to the last of thes...
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who worked for a while in a FM station. He said that some good quality broadcasting stations have tube bassed compressors and that they process de signal quite a lot. Maybe what we hear coming from the FM is a highly processed signal, which might hav...
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Yesterday I spent most of the day to play with my IB, trying
to make it to sound the way how I like. I
pretty much wanted to re-implement on analog level that surprisingly good result
I got with digital crossover. So, I have built my along crosso...
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[quote user=" Jonathan Valin"] Third, in Munich, because of the severely limited amount of time available for setup (and the severely limited space to set up in), Wolf DSP’d the U3s for phase but did not DSP them for time alignment.... In Cali, the U...
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[quote user="Romy the Cat"] Even if it is possible with a given (multichannel, faulty design) loudspeaker then the DPLOS become very fragile and appears/appears too sudden, without a gradual improvement while approaching the DPLOS. The keys are phase...
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Well, since there's always "something missing" from the lower-mids, I always wonder how to address that without making an unwanted hump or introducing uncontrolable phase issues there...Then, there's the power issue at LF...Got me, Homes.Best re...
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Never tried it but R8Brain Pro Minimum Phase seems to show best in the link below. I personally do use foobar but only for the lack of simple dedicated players that output 16/44.1. There's much talk on cPlay but can't get it to work.http://src.infini...
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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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