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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Romy the Cat"]I am more and more inclining to finish my horn in the textured paint of the color of my room. However, lately I have another “idee fixe”. My listening room has a very pleasant light pattern, something that was here before a...
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[quote user="Joe Roberts"] The L-9 enclosures were wood on all sides. Sealed box. No ambiguity here.Wings were common on theater speakers for mid-bass reinforcement. Plainly audible improvement on these and, for example, A-7/A-5 VOTs. It is equivalen...
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The brickish finish does not make me cringe, in fact I do like the idea. I do not feel that it would be some kind of non-truths. There is no truths or non-truths in it. The only a few first feet of the horn will be visible and then it will go to dark...
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Hi Guys,An idea I've had for damping thinner horns in a more or less aesthetically pleasing manner is to house the horn in a Sonotube rigid cardboard cylindrical concrete former, and then apply the desired damping material inside the Sonotube.&n...
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I see some posts predicting that the use of bronze for the Mid-Range horns (see photos above) would result in ringing... Well, I respectfully beg to differ; I think this is one area where the designer may have done well... Too bad he polished them.
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[quote user="Markus"]I can't really make it out on the photo, but it looks a bit like a Tannoy Supertweeter.[/quote] Yes, it is but my interest is not what kind of brand he used but why he would need an additional tweeter in the first place? The mult...
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I would never believe that I would face this problem. My carpenter measured up all my space and give me a verdict that he can put in there two mouths 4 by 6 feet with a foot and a have between them. That is it and that was exactly what I would like t...
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Today a brilliant and insultingly simple idea come to me. I was thinking about the way jointing my sections. The horn probably will be made by 2-3 sections, plus the transition please. So, the section jointing flanges are usually made. I probably go ...
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It was interesting, educational and in way embarrassing. Last night I send the directions to my carpenter to redo the third section in accordance to the original plan where the opening of the sections is more consistent. This morning he took the thir...
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before you try to "drag" the horn across elevated "forks", whether or not you "carpet" them.This dragging and positioning issue is why I suggest a stable temporary "resting place" set at the correct elevation. This way you can safely and "easily" ef...
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(..in between errands..)In respects to whether or not using both the front and rear energy will work, I will have to listen for myself. As I commented earlier elsewhere in this thread, an arrangement using two drivers may prove to be the better...
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KlausMartin (Azura horn ) is making for me extension to 2.75" (BC 8p21)and 1.4" for 204 Hz (altec 288c) .He also developed 550 hz horn for S2 . He understands importance of smooth driver -throat transition . It would be ready to go solution for...
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Here is the subject that makes anyone who does what we are trying to do wondering: do remover the screw from wood or not. Our leading position is the screw will be removed. We use long 5-7 inch double threaded screws that bund wood stronger than regu...
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The 4 sections are done. The last one is not glued yet. The reason what we assemble the section and then glue them is because the section have complex 3D geometry with all 4 sides are under specific arc. Yes, that is right – even the side of the horn...
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I am not and expert in wood construction, all the building we do around here is brick and mortar, but, If you get the Horn wall close to the roof you could fill that space up with that spray expanding foam. The side of the Mid bass horn will be sti...
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"Gargoyle, YMMV, but I
associate LF propagation/amplification with mass; there has to be some
way to really "anchor" at least the LF driver. "Noted"I was thinking MF for
the felt and/or paper horns, although I guess you could begin with a
chi...
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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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Electronluv,
I decided do not spoil the “Who built horn” thread what juts was an announcement of availability of different horn boulders. I also did not want to continue the following thread:
http://www.romythecat.com/Forums/ShowPost.aspx?postID=26...
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Paul,Well it would be silly for me to insist that I'm absolutely correct here, as I too am only basing my analysis only on what I see, and what experience I have been able to amass (some profession-related, a little in...
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jd: Looks very ..cool! I can't wait to see some more photos!Romy wrote:"1) You might not need rubber gaskets at back chamber of your mid-bass horn. "-I was thinking the same. But perhaps rubber rings can be used to seal the back chamber to make ...
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I've only had the pleasure of listening to 'professional' horns (whatever 'professional' really stands for)--horn normally used in concerts and small venues. (It was always so obvious to me--by listening--that the range of the horn-loaded 'bass...
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They paid attention to time-alignment, good - but the tweeters location near a large reflective surface might be problematic.It looks like a 1kHz tractrix horn to me (maybe 800Hz). I have one though it's from Stereo Lab....
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[quote user="jessie.dazzle"]Why no amount of watts will compensate for direct-radiation :Start with the obvious : When compared to either multiple direct-radiating drivers or a single horn-loaded driver, to achieve the same SPL, a single direct-radia...
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Hm,… yes and no. Inductance is not necessary an evil. Well, it is an evil for open-top-end drivers but you need to look at the life of compression driver all around and then you understand that inductance is not limiting evil. Sure with grow of diame...
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[quote user="Paul S"]You might also want to try stiffened felt, which seemed to work "as well" as the paper for me, and it is easier to form. Just saturate the pre-shaped felt with runny "paste", whether gluten/starch or methyl cellulose, milk glue...
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[quote user="guy sergeant"]Is there no way to smooth out the visible steps in the latter part of the horn's expansion or would you prefer not to?[/quote] This is very interesting one. Yes, there is a way to smooth out the visible horizontal steps. Th...
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[quote user="harold"]thanks for your replies. Paul is quite right. I'm not new to audio forums and know better than to post such an unfocussed question with no background. It was a combination of being impressed with the immediacy, detail, and scale ...
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And now, going back to page 2 of this thread; here we pick up with some shots of the upper bass horn and the associated primitive "tooling"Mold without coreMold with core. Before core is put in place, mold is loaded with a thick coat o...
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I am not impressed with that Hornfabrik and I do not see
what they do “right”. The video is expectedly stupid, with the “journalist” do
not know what they are asking and what they hear in response. For instance the small speaker they claim to have ...
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its still expensive, but birch-plywood is not that much cheaper. its around 30-40 €/sqm. the only experience i have with a carbon-foam composite is from making a skateboard for my gf´s son. looks very good, but whats more important, ab...
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