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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I think it should be somewhere posted for my and perhaps for others future references. Here is the setting for testing Melquiades' single-stage tubes on Hickok 580/580A tube testers. To test the tube as a driver for a full Milq (two stages) set ...
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[quote user="drdna"] I think this 2A3 must have a specific set-up to sound its best. You have not found it yet. To begin with and familiarize yourself with the sound of it, I suggest sticking with the topology that has been tested by amplifier design...
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Paul, l I have written about it somewhere: the passive speaker-level crossovers on bass channels are no good. Marko has 250Hz that with 3rd order would be around 10mH and 2mH. With air core then would be very large coils with huge amount of DCR – ver...
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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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Romy's quotes in blue :"...Discussing the Jessie project we multiple times mention the idea of the large midbass horn hanging above MF section... The rational was to have it positionally contra-react the output of the upperbass horn... But do we au...
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[quote user="serenechaos"] "I think the ultimate length of the upperbass horn is 3”- 4” throat. With longer horn it would be very complicated to time-align it as the horn will mask out the MF driver."
Is this also why you use tractrix curve f...
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The throat diameter of 7" is what I first approximated as an acceptable size, with the 4" being an alternative (should some unwanted effects arise, I may then experiment with the 4" throat). I can't simply assume 7" will be correct (though that...
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Mark,
It is hard to say. I owned T90A sometimes in 2001-2002. At that time I was going through the drivers like crazy and T90A was just one of them. Looking from now I do not think that I gave to many drivers a chance as I did not “work” them trying...
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Last week I spent a few hours at the scene of NY’s Stereophile Show – HE 2004: a half-day on Thursday and 2 hours on Friday. As many other audio-shows it had many semi-ugly colorations, however as any audio shows this zoo trip brought it’s own “inter...
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[quote user="clarkjohnsen"]Regarding the worthies mentioned in my article, and your lambasting of them, you got it all wrong, and nastily so. Consider your invitation to visit them withdrawn.[/quote] Clark, I know this crowd quite well, although...
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[quote user="drdna"] 1. This particular EdgarHorn is being sold to make way for a Cain & Cain speaker which is based initially on a single-driver type backloaded horn. To me this suggested that the seller was seeking the benefit...
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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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I am finishing us to setup my listening room and I have my PP2000 blowing up sometimes (go to protection bypass mode) when I use powerful SS amp for ULF along with Melquiades and the rest of the systems driver from one single PP2000. So, I guess I wo...
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Shannon, I am not 100% sure what you are asking. If you want
to drive SS with a single 5E6P stage then you have some difficulties. Dima had his version of SRPP with 5E6P to drive his SS and it "worked" very fine. http://forum.vegalab.ru/showthread...
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priviet. I tried many ways. I cut the front outside faceplate open, and put a second driver on it. So that two drivers were firing onto each other face to face in one single hornthroat, rest normal single K. To my surprise the output didn't increase ...
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I just found this thread and can comment on the Enabled DX4s. Limono (Wojtek) very gratiously loaned his Enabled 8 ohm Lowther DX4 drivers to me this past summer (summer of 2008). It took my a while to make the crossover for these (I have...
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It is complicated. Any tweeter is different and the RAAL’s “Water Drop” tweeter is more different then others. Almond any other tweeters that I heard this tweeter has something absolutely unique- it has no annoying upper MF nose. When I asked Alex to...
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As I said before, in many if not all instances the provisions for “bad electricity” are deeply entrenched into the design of our playbacks. A few days back I took advantages of some new possibilities that PP2000 offered and made some changes in playb...
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I double checked and everything seems connected ok. all parts values are correct. I have measured the voltage across R2 and it was 208V so 208v / 15k = 13.86mA. I connected 1r resistor between M and R2 and it was 14mA. also connected 1r resistor betw...
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[quote user="Cosmos"] Anyway, as the description on our site on second paragraph says, the third 6C33 located at the back, is used as the pass element of the regulator (controlled by solid state circuitry) providing 220V with 100uV of random noise &a...
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It sounds like a lot of the circling has to do with which 2A3 "sounds better", outright. In any case, I'm guessing everyone would agree that it is specious to argue about which 2A3 sounds most like some internally-estab...
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Haralanov,
What you are experiencing in my view is an inconsistency and confusion between listening of playback presentation vs. content of musical message. I know that it is fashionable among audiophiles to claim “not listening to audio but l...
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[quote user="Iraschwips"]I imagine this
excellent transient response was limited to a narrow frequency band that was
emphasized by the specific recording? [/quote]
Yes, it is was very accurate guess: it was the “narrow
frequency” and it WAS to a ...
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Loudspeakers. For whomever who follows my dairies on this site and whoever has any real understanding what makes a horn-loaded loudspeaker to sound good it is know that Macondo Acoustic System is not juts the result of my DIY efforts or the John Hasq...
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actually I agree with Romy, to a degree.... If the amplifier is a push pull device, using my output and input splitter devices of course, then an interstage transformer is a much better choice than rc coupling. Using transformers designed to the crit...
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Romy,I understand your situation as a result of the move. It is a good thing because a system that is out of proportion with not work in a family environment and ultimately you will be battling yourself between sound and family priorities and practic...
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[quote user="N-set"] The only purely theoretical point which is intriguing for mein the whole multiple drive idea is whether one can achieve a uniform "floating" rotation: the forces perpendicular to the spindle balance out and the spindle rotates wi...
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Jessie, a few comments.
The back chamber mechanism is good. Are you planning to do the same in the midbass horn? Since you most likely will not drive your upperbass all the way down I think that the back chamber mechanism will be more effectiv...
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[quote user="Marc HENRY"]hi all,thanks for your interest !yes the frame is curved, HF and MF are //yes there is a phase plug in the bass horn. This cover 80-300Hz.there is a separate infra-bass section, covering 20-80Hz.images of the bass phase p...
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After spending a day with RAAL’s “Water Drop” tweeter, trying to make a mounting harness for it I have to tell you that it almost a nightmare to handle it. Around this tweeter I was forced to recognize all objects I my room on magnetic and non-magnet...
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