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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Pretend
a driver diaphragm, any driver. From front diaphragm "sees" the horn
throat and the mass of air in the horn that diaphragm needs to
"push". This creates let call front spring. If a driver has a front
chamber than let discard it for now. ...
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Haralanov, good post, clearly indicative to a person who uses single-driver speakers. :-) I would have a LOT to say about it. The subject was very deeply researched by me in 2001-2002, before I had my site. From my current standing I disagree with yo...
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1: If it is not patently obvious to W that Romy is far from enamored with what I hypothetically propose, then it would seem that W is grievously wanting in terms of intellect, a more troublesome failing in the world at large than errant taste in loud...
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The whole room (L-shaped) is larger as you all noticed, but as Roman saw in my Blog , the listening space is smaller - i.e. about 6,5 x 4,5 meters with low 2,70 ceiling - and is a perennial work in progress... yes, the Stereo Lab 1000 hz is a true wa...
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[quote user="haralanov"] This experiment was made a few days ago by a friend of mine who is speaker repair person. The modified compression driver is Soviet made 1A-16. If you have the chance to compare the single layer VC vs. the original VC and to ...
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[quote user="el`Ol"] I know the PAC tweeter of the WLM has the best transients and transparency of all tweeters I know and so is the best tweeter above 5kHz I know, although I hated the implementation (crossed far too low, harsh-sounding upper midran...
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Romy wrote :"...And with 1600 pound per channel you might forget about the DPOLS … -..."No, 1600 lbs per channel would be really serious! 1600 lbs is the total combined weight of the Left and Right channels, with frames, (the frames turned ...
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[quote user="tuga"]If you have a midrange driver you can try that for yourself.[/quote]In this case the lack of "full-range" audio is so glaring it overwhelms any advantage of the point source, I think.
[quote user="tuga"]BTW, do you consider elec...
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Ending up re-amping my MF channel, I found myself at unexpected situation that I am not completely compostable with Macondo HF. It is not that the HF are bad but they were made to serve the interest of older, slightly softer operating single-stag...
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[quote user="coops"]I have re-read your post and your tone sugests that field coil drivers wi be used by manufacturers purely for their marketing appeal and not for any sonic improvement, Thomas Woschnick has just taken delivery of a pair of Ce...
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Ok, I have figured out why I have so extended bandwidth over 73kHz for my tweeter. I forgot that when I measured it I had the LPAD wide opened and in this configuration the parallel resistor is 20K and series is shorted. So, in that case I had just o...
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Okay... I also downloaded the original Milq SET amplifier PDF and have looked at it in detail as well as the 6-channel adaptation (DSET) and I understand where you're going with it... or so I think. In my particular situation, I've owned two pair of ...
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Here is my proposal for an ideal horn system. The concept derives from the really of the horns as I know them, the available park of the drivers, the drivers’ real capacity and from… everything else that I might comment upon if you would not figure o...
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This Sakuma’s is kind of BS. What I mean is that it has the appeal to be “good thinking” but only in the realm of marketing hype, something that the editor of “Direct Heating” had created around Sakuma. The reality is that the Sakuma’s TWO channel Am...
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Roman,[quote user="Romy the Cat"]Regarding the absents of the band-pass filters… Perhaps you are correct.[/quote] I am correct, I have been inside Hoerning speakers, to find "what makes them tick"....[quote user="Romy the Cat"]However, they...
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Pete,
I do not think that it makes a sense to searched for “LF for use with Vitavox S2”. Do you think that there are good LF to use with Vitavox S2 and there are good LF to use with other drivers? I do not think so. The good LFs are good by themselv...
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I did find replacement tubes OK (online), just not locally, like I had hoped. I have now recieved, installed and tested all new tubes but the 6N6Ps, which have been delayed in St. Petersberg by Christmas mail jamb-up. ...
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[quote user="jessie.dazzle"] Assuming one will not get anything under 50Hz (usable) from a 40Hz horn, I interpret the mission of lower-bass channels in the context of a horn system as follows….[/quote]
Hm, this is a bit tricky with bass. A pla...
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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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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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[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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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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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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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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[quote user="decoud"]So the ambition is low, and I am after a simple solution prioritizing these things, but the question of general interest is whether anyone has found an elegant way of turning the constraints of space into a virtue [/quote] We...
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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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