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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy wrote:"...The very first wire on right from the bridge between the filaments is brown on the old socket and white on your new socket..."Yes, in a way you are correct; the wire is white but over time became sort of brown toward the socket; this i...
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Romy wrote:"...I would like to have a micro heat sink on the pins to let them to be cool down..."Had I thought of it before installing the sockets, it would be fairly simple to do, however, these pin receptacles already have more mass than those of t...
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Regarding L1 and L2 outputs and bi-amping:
Romy wrote:"...The unfortunate part is that if you still intend to run a dedicated cable to your let say LF section and if you use Lamm preamp then you can’t... his preamps (L1 and L2, I do not know h...
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Daisy chaining ML2s:
Over in the thread about CES 2011http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=15482#15482Romy posted a link to photos taken by Mike, the owner of Audio Federationhttp://www.audiofederation.com/blog/Scrolling do...
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LX wrote:"...Lifting ground is OK for a simple test but I do not want to operate like this..."With ground lifted, why not simply run a single-conductor cable from the PP's system ground (or chassis) so that it makes electrical contact with one of...
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Though he seems to like running several TTs in parallel, I do not interpret Pham's page to show that he is running more than just one horn system; what I see is an evolution of a system. It looks like, in its latest iteration (under the heading "Syst...
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my wrote: "...The lower knee of the driver range is fantastic, superbly clean and this is in a way very bad as it is a clear indication that the horn is too large for the driver. I think S3 drop like stone at 450Hz but I would need something that wou...
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I would not be surprised to learn that the impression of depth from multi-cells is the result of their creating a bit of what has been referred to on this site as the x-factor; a sort of cross-feed/expander effect (see discussion of...
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Romy,
I'm trying to understand your logic in choosing a multi-cell design (instead of a single-cell oval or rectangular 180Hz exponential horn of the same vertical height)... Was this in the interest of achieving a more diffused radiation patt...
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I've meant for some time to add a few shots of the ULF channels. Here's the first one; the photos were taken at my old place.Sized to fit through the door of the elevator (barely).Baffle and lid cut with diamond blade.Getting that lid up to seal the ...
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Romy, Selling the heavy stuff would be smart... Wait a minute; its all heavy. The ULF modules would be fairly easy to recreate; in any case, I want to redo the enclosures using different materials, so this part of it makes sense to me. I'm not ent...
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Temporarily seal off the throats from where the driver will mount, stand the horn vertically on its throat and simply fill the cells with paint. Once full, drain the excess back into the paint bucket, by piercing the seal.Alternatively, use a long, t...
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I realize this is off topic, but I would like to address the issue:Rackish wrote: "...Recently I asked someone who contributes regularly on your forum and has a system 'similar' to yours to come and listen to his system. He did not answer. I feel e...
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Regarding combined driver diaphragm area for ULF: Romy wrote: "...I disagree that using a bunch of 10" drivers is some kind of compromised in way. The six 10” drivers give me a surface of 2.3 18” drivers..." I recognize the relative and impo...
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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. Best way to find out... Plac...
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Romy wrote:"... I can’t open PDF file..."Here's the part of the Manual that covers design features and specs (no circuit diagram available):IntroductionThe CA10 is a 10 watts per channel Class-A stereo power amplifier capable of great musicality and ...
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Romy wrote:"... from the perspective of “reading the back side of the midbass speed bump” I would argue that it has nothing to do with horn loading. Look at the notion widely. I would propose the following...""...An abstract ultimate playback system ...
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Romy wrote:"...In regular audio we accustom that any loud midbass tone get converted to sort of speed bump. You run a high speed, hit the bump and have your “point of no return”, what you fly in air and you have a generic expectations that the landin...
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Sounds like the title to a poem!I'd go with the RCRC crossover... Why? Its cheaper, and as Paul mentions, until you introduce the final character (uncle ULF), the real end of the story is impossible to write.
jd*...
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Yes, the SMS 1 (Sado-Maso-System 1), as its name implies, has a user interface conceived by someone who "comes from the other side"... It is rivaled in inconvenience only by Yamaha's synthesizers and France's parking lots.However, once you "submit", ...
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Excellent news regarding this morning's discoveries. jd wrote:"...Are you able to say whether the problem is due to the horn position relative to the room, or to throat diameter relative to the driver diameter?..."Yes, a stupidly phrased question, bu...
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So they will need some "teaching".The most difficult students are often the most promising.Are you able to say whether the problem is due to the horn position relative to the room, or to throat diameter relative to the driver diameter?jd*...
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Romy wrote:"...a chassis designer told me. It is now possible to buy normal efficiency drivers with low mechanical loss..."Sure it might exist, but I question the application.First, a bit of the obvious:Consider only the driver; not the amps and rela...
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About the 1250Khz secondary resonance: Romy wrote:"...My MF channel is crossed well above secondary resonance – at 3200Hz... I get my 1000Hz by gliding the filter-declining slope of the secondary resonance..."I know this... What I'd really like to s...
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Romy wrote:"...I will most certainly do not need it to go over 1000Hz, why would I? It is very much not my objective. All the I would like to do it to give to Fundamentals Channel some room from the bottom to breathe..."Three reasons:1) To try hi...
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Romy wrote:"...Since in my new house I will have no room height limitation I am consenting to replace my 250Hz tractrix horns with 200Hz exponential horns...""...I would like my Fundamental Channel to employ 170-180 Hz slow-opening horn and to use a ...
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I didn't read the entire thread, but enough to get the gist...This guy admits he's tone deaf, but he's likely also a good fabricator, is not afraid of large-scale work, mentions reasonable cost and seems willing to listen. Doesn't that make him a pot...
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Romy wrote:"...What kind outer suspension it has, is it rubber?..." Correct (I know I know...)"...I think the key factor would be the degree to which the driver is able to decimate the LF pitches..."Pitch: The property of sound that varies with varia...
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Romy wrote:"...I do not know anything about your LF section. What do you use and where does it crossed?..."I have 2 ULF "boxes"; each has an 18" McCauley 6174.The enclosures are sealed and each measures 14 cubic feet. They are made from 70mm thick co...
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Romy wrote:"...The leading idea is to bolt a triangular shape sealed enclosure juts behind the small wall that cover the load bearing beam from the midbass horns..."For a lot of reasons, I'd vote for an alternate placement. You've got that baseme...
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