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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Me being exuberant about the new ULF capacity does not necessarily mean that ULF contribution is right and proper, let me to explain. There is a musical event that has it sonic representation. This sonic representation better or worst was captured by...
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Actually I got interest in the idea of having remote control attenuator on my ULF amplifier, I juts need to find a company who will be able to do it for me. For whatever reasons audio people feel bass channels have to have an attenuator. This is alwa...
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This for someone who do not use ULF might be considered as superfluous but I am going to tell you that that for me, the person who use ULF dally, it is an absolutely mandatory tool. The ULF channels have to have a good calibrate dB meter that in real...
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ULF is a consent not implementation.
I did experimented ULF based upon aura 18 in past and now I have the line-array
with 10” ScanSpeeks. The ULF is something that you should not be able to hear without
rest of the system. With my current ULF when...
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Since I finalized how my midbass horn handles decay the only things left in my playback is to set the right level and cut off point of my ULF channel. Formerly I did set it up for 35Hz, second order and it was fine as a temporary setting. However in ...
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Last night I spent some time with observing my ULF and I conclude that I am not exactly know what I deal with. Do not get me wrong: the ULF forks fine, sounds fine and the playback is perfectly operational and listenable; it does sound very good ...
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You know, it surprises me how much less fan to listen my playback without ULF. Nope, the playback does not sound bad from audio perspective without ULF but it for sure a bit different experience. From a certain perspective to be in a room with U...
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[quote user="Romy the Cat"] For a casual observer it might appear that I am constantly fought with my ULF, finding and loosing better and worse configurations. It might be so but I have a very strong sense of objective of what I would like to ac...
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I pretty much know what I need to do – I need to go for shaper filter built in my power amp. The second order I have no is too impactful to midbass, so I need to do for 2th order or perhaps for 4th and try to integrate it. Whatever it will be I thin...
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[quote user="RF at Ona"] Romy,I might have overlooked something on your site but I understand that your ULF amp is driven directly by the preamp line stage. If that is the case, you may want to consider an old technique for integrating subwoofers...
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I am not sure that I am at final stage of my ULF wondering. I do like the integration-free problem of my ULF via tube crossover. I am a bit concert that I am injecting now + 9dB at sub 20Hz and do not feel that I have too much bass. I am a bit mo...
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I was trying to fix my broken B2 amp and I think I “fixed” it to the point that it is absolutely dead. That made me very upset. It is kind of funny as playback sounds fine without ULF channel and I frequently listen with ULF channels off. However, ...
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I am continuing evolving with my ULF application. The IslandPink’s question if my ULF affecting various types of music sound kind of funny. Would my answer to be predicable? I a bit release the pressure from ULF. The way I use ULF allow to chalks the...
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[quote user="be"]It seem that the concensus here is that there is no tone in the ULF range, something like below 50Hz.[/quote] The range “below 50Hz” is not ULF range. Below 50Hz is regular LF or regular bass region. The whole definition if ULF is th...
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Time coherence of ULF may be less important than that of higher frequencies and that seems to make sense in theory and jibes with my own experience. However, I still think ULF timing matters a lot with respect to a) higher frequency drivers and b) ot...
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[quote user="Romy the Cat"]
The most important in audio is a state of realization and obtaining this state is a matter of time I am afraid. Let pretend that tomorrow I will build/buy some kind of speaker that would do the perfect ULF channel ...
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I have explored the subject of tapped horns. My exploration did not include listening them – ridicules, isn’t it? I did consult with a few folks, who I respect and who built and heard many of them and who know subject well. I pretty much know what I ...
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[quote user="anthony"]This I do not understand. Would you care to elaborate?[/quote]I think I have a whole video dedicated to it. When you finish your ulf and will be driving from whatever application you will be driving it feels essential is the sa...
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This is very interesting question. I do not know a lot of people with whom I might collaborate it as very few run ULF channels. Most of time people run just bass channels. It is my experience that whenever audio people talk or think about the low...
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[quote user="oxric"] I believe that although you may be wrong to make a difference between ULF and the rest of the frequency range….[/quote]I know when I wrote it I would raise some eyebrows of the few readers of my site who actually are thinking...
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I am trying to keep the discussion about midbass horns out of ULF thread, I guess if Rakesh would like he can create a separate thread dedicated to his specific installation and the design ideas. I would like to keep the content of the posts more...
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[quote user="jessie.dazzle"]In this case, below 50Hz, I think el`Ol is right to suggest that you consider using DSP as a permanent solution. The SMS 1 is in theory the silver bullet... You just need to find out if you can live with it long-term. Be...
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Yes, I promised to tell about, so here is comes.
The past Sunday I woke up at 6AM and first intention to answer to myself what is wrong with my ULF. I had wonderful sound with absolutely wonderful and the most important very proper bass. Howe...
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This week two audio persons visited me. Both of them experimenting with loudspeakers of own design and during their visit I discounted my Macondo channels and demonstrated to then the contribution of the each channel to Macondo Sound. Both of them di...
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The effect indeed is very interesting. I think it has to do with some complex phase interaction what the high knee of ULF squashes the lower knee of midbass. From general perspective I would say that this is not good as I would prefer to observe summ...
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I am actually doing the bass and ULF with different modules and amps. My bass modules are the dual tad boxes driven with their dedicated monoblock solid state amplification. The tapped horn is working for ULF only as it is crossed at 30hz with 18db. ...
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[quote user="Romy the Cat"]
A few months ago I met a statement in one on my videos bass channels should not be driven by the same crossoveed signal as a rest of the system. In my view it is the key. In my current view it needs to be very de...
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You have a nice very much full-range, preferably multichannel, playback system, and you like what it does. Now, disconnect your very lowest channel.
Disconnect it and get use to this sound. Then put the lowest channel back to
rotation. You got bett...
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Romy, is this a trick question? You are the only person I know of with time aligned, true IB ULF channels using 4 Aurasound sub-woofers, so who's going to answer your question? The first thought that came to my mind was how some "Big Music" composer...
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Romy, is this a trick question? You are the only person I know of with time aligned, true IB ULF channels using 4 Aurasound sub-woofers, so who's going to answer your question? The first thought that came to my mind was how some "Big Music" composer...
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