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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Understanding Line Array SystemsBy John Murray
Behind the buzz, there are a lot of factors at work in line arrays. An explanation and comparison of current models. This discussion can’t be contained in just a few paragraphs, so we must start with th...
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Recently Macondo was altered and converted into… nope, not into a Super Macondo :-) but in a “Larger Macondo”. The Super Macondo it will be when I resolved how to implement time delays along with a low pass flirter at midbass horn, that would enable ...
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Understanding Line Array SystemsBy John Murray
Behind the buzz, there are a lot of factors at work in line arrays. An explanation and comparison of current models. This discussion can’t be contained in just a few paragraphs, so we must start with th...
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Your Typical Acoustical Suspension-type Loudspeaker enclosure witch has less then 90 db at 1 watt does not belong with a horn system that starts at 110db at 1 watt, even when you ad more then 1 driver, it is still way to far off to even consider usin...
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Continuing to harass the readers of my site and myself with the good news about the performance of my SA8535 driver I would like to post a very educational article about the subject. As I told before, being familiar with sound of ribbons then never i...
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Dear John,
I hope you don't mind me writing directly to you. I've been posting on Romy the
Cat's audio boa...
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Bass arrays are considered infinite when they cover min. 70% of the room height. It is also important that they are mirrored (ceiling perpendicular to the array). Your new room is not ideal for bass arrays.I don't know whether you have read this pape...
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[quote user="Romy the Cat"]
Aura made their 1808 driver in 80s and most of the 90s and it was wonderful. It had huge high-temperature neodymium magnet, unique magnet geometry with underhung 4" edgewound aluminum voice coil. It was the only 18-inch...
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Rakesh, I moved your post to this thread as I feel it is more relevant here, I hope you do not mind. You ask yours the very same question that I ask myself. I do not have definitive answers to them:
[quote user="oxric"] I am presently consider...
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[quote user="anthony"]Regarding the other questions you asked, I am basically duplicating Romy's system as my starting point with horns.[/quote]Yes, as you can see my approach is also very similar.Two major differences: TH and Fundamental frequency r...
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This is very interesting observation. I am in away envy that Petar went for a set of large woofers (4x23”!). This is the way to go! Unfortunately I did not experiment with it even I had the drivers and means to do it. My problem was with the fact...
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[quote user="oxric"] I like the idea of angling the enclosure, although I am not sure about the idea of the lowest drivers firing at the floor...I would use a series of modules each containing two tightly fit drivers which would fire parallel to the ...
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Angelo,
I care less about the “commercially available” objectives, honestly it is too boring.
However, whatever you do not be distracted that what you are making will be reminding Avantgardes. The Avantgarde Trio Classic (in vertical configuration)...
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Listening to the horns, it seems that they indeed die somewhere below 120Hz. I was surprised, and a little disappointed that it seemed so steep. Good to hear that it's to be expected!!Yes, I'm using a 30-something-Hz 1st order high pass on them ...
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Be, there might be any number of reasons for listening to speakers more or less on or off axis, but I think in the case of drivers firing early across the axes of other drivers there are identifiable issues that can be heard as "problems" by some lis...
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Paul, in my view the air-caps as an ultimate cap, the ultimate by own intrinsic topology. It is particularly the case for the 834P- like application as in there the cap is not biased by high voltage DC and gets constantly re-polarized. You see the pr...
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[quote user="amdismal"]The crossovers were fourth order, which is what I use on my horns. Second order, I have found, can give a better blending, but reduced the delicacy and transparency in my system. But it's very complicated, and further exacerb...
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I feel like i want a line array of lowThers with random graininess applied to their paper membrane as my oops channel! I would want the strings to have the texture of aged beef when it is cooked "aller/retour" (french alwys use food metaphors.).Serio...
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Here is pretty much the idea that I had – a very tall line array with min footprint and with more of less corrected timing error by angling the front baffle. At the picture below the curvature of positioning of Macondo channels is not depicted (for s...
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Spent today a whole day moving the boxes, do some measurements,
fighting with REW interface, thinking, some listening… Found some bugs in the
system that I think screwed my initial feeling. The bugs were mostly by Thomas
the Son touched what he sh...
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Another bogus idea.If a perfect upper bass could be achieved by means of spherical (approx. 1m diameter horn), what would be the next acceptable solution,if space considerations do not allow big horns? Perhaps that could be a line array of small dire...
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Romy,it would be interesting to test whether it is really that impossible to get into the near field at 30 Hz as Griffin's simple formula in the line array white paper implies. I am thinking about laying the arrays on the ground, having in mind ceili...
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Chris, I did ask myself the same question: perhaps my given PTR9 is demagnetized. I called the last night to the owner of the tweeters and he said that he uses them for 7 years and they driver should be fine. He also expressed a lot of doubts if the ...
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Yep, indeed, it looks very nice. The 8 sections of bass line
array look visually slightly overweening but I think when you put the upper
bass horns in place it will visually balance the things out. I feel some sort
of envy to the way how you plan ...
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Yes indeed. The company was originally Nova Physics and appears to have been sold on to Sam Laufer, a lawyer by profession originally who brought in Mark Porzilli of Melos and Pipedreams fame. I do not know if this company actually manufactures or se...
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In my first design, I kept them all in a vertical line. It had one channel less back then. When I added the 1" throat JMLC 1000, I decided, as the tweeter operates over 9.6k, the slight misalignment may not matter. Still, I kept vary and kept the fra...
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Lately I have been thinking a lot, trying figure out what I
am and where I would like to go with Macondo. The Macondo base, the horns isle
is still there and I have no motivation to change anything. The conceptualizing
and assembling of what I hav...
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[quote user="AnonymousUser"] Line level crossing or passive speaker level crossovers-same devil. [/quote]
If you are planning to build a dedicated LF SET then the line level crossing vs. passive speaker level crossovers is not the same devil. With a...
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[quote user="Romy the Cat"] That is very good approach in my view. The
problem is in this approach that you have to have high sensitively speakers
that you would be able to use with that test full-range Milq. The behavior of
the Full range Milq wi...
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[quote user="anthony"]I plan to
build a fullrange Melquiades for a friend and then if that works out the DSET 6
or 7 channel version for myself. [/quote]
That is very good approach in my view. The
problem is in this approach that you have t...
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