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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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This post is split form the thread:http://www.GoodSoundClub.com/TreeItem.aspx?PostID=4549http://www.GoodSoundClub.com/TreeItem.aspx?PostID=4556[quote user="jessie.dazzle"] "...I very much might try to use the metal suspension again when I will be dri...
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[quote user="Murataltuev"] Now it is
clear! Thank you, Romy!Today I auditioned and measured GOTO with closed hole in
back chamber. Mid-bass completely disappeared!
With closed back chamber it works efficiently
only from 200Hz! So, I'm going to tr...
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Hi,I am slowly building my own Macondo. I understand why the injection channel is there. It brings some kind of softness that the compression drivers lack. I am using a 12" JBL midbass driver (~100dB sensitivity) in a 50L single driver Marshall cabin...
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[quote user="pe1mmk"]Well Cat you can call me whatever you like, but you still did not answer my question. Both have a horn for highs, for mids and for lows, only the sub lows are handled differently. [/quote]
I do not think I called you with names...
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[quote user=""]...The most obvious problem is with the Bass drivers, which are left to radiate both to the front (via the horns) as well as to the rear... which in this case really means to the front!... The rear of the drivers are aimed upward at a ...
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[quote user="Murataltuev"]Romy, thank you very
much for very detailed explanation of your horn theory. Let me present some
doubts about it. From physics basics when we have more than one springs
(suspension, throat resistance, back chamber) we can...
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[quote user="msaudio"]
Romy If you would thank about what you are building and what it does, you would grasp the concept of my thanking. You have a 7inch hole on your bafflle with your woofer on the back side of it in a sealed box. The only...
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[quote user="Romy the Cat"]You do not see any explanation is because you are not accustom
to think about explanations but wait that explanation will be brought to you.
Here is a homework to you: provide answers to the following questions:
1) Wha...
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[quote user="ulf"]A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn sound. The improvement was so clear that A/B testing was not needed. [/quote]
For wha...
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[quote user="Paul S"] I remembered a host of "old" drivers from my past (not old at the time...) that, if memory serves, sounded rather muffled and slow, with humped response[/quote]Yes, Paul, that's exactly the way they sound in their original condi...
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If you think that Jews on Christmas only abuse Chinese food and watch endless movies then think again. Since obnoxious stolen Christians my beloved Christmas tree a few years back some of the Jews torture compression drivers during Christmas’ eve...
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The back chamber are installed, the horns are fully assemble and ready to be hoisted tomorrow. I will go to bad today playing…. Here are a few shots for history as if it fly tomorrow into attic then it never will be seen. On the last image you might ...
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Roman, first of all I feel good about your bass horn that's what i have always bin dreaming and if i get the space for it wont even waste a minute :)I think you already know it or using it ...You mentioned using a foam in back chamber so it adds a ...
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Ok, the attic is all prepared and ready is host the horns. I installed the final 14/50 drivers and put in the first layer of foam. I do not like the result. With the large death of the foam that need it will take for me weeks to pile a layer by layer...
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[quote user="Romy the Cat"]. What was your resonant frequency after loading? The 416 are 25Hz drivers, after loading and with two drivers it might be deep in teens. From the picture it looks like you keep the back chamber of extra large space, or eve...
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What I think I would need is microscopic pneumatic valve that I would be able to stick into my back chamber and that would have a little-bolt that would allow adjusting the diameter of the leaking “port”... Sure, it would be fun to have the valve to ...
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A few questions. What driver is it? It looks like it is 15 Vitavox, is it 151 or 15/40? What the resonant frequency of the horn and driver with no back chamber? The most important: how the hell all of it sound. I do not be believed that you did not h...
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What is the purpose of having the flexibility to re-configure from straight to J horn?This thing will be large and massive enough that physically moving it from one configuration to another will be difficult and require a lot of effort. Conceptually...
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[quote user="JJ Triode"]Romy,You refer to the D minor concerto as a "piano concerto," but wasn't it originally composed for harpsichord, like all his other keyboard works? (Except organ of course.) Anyway, I have a harpsichord recording of the D...
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[quote user="MochaMike"]A stereo three way horn system with a dual concentric 15" woofers backloaded to 50 cycles and front loaded with a short round tractrix horn 200-800 cycles handed off to the concentric 2" com...
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This weekend if I have time I will be doing the testing of my driver deciding which one I will be using. The framework of testing will be the following: a single driver, closed at 150Hz first order, mounted in infinite baffle and working along with M...
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This connection is the only connection that my horn will have. From one side it will be back chamber with hard-attached first section. The first section is very critical as it has a transition from 7” round throe to trapezoid of the rest of the horn....
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Yes, to have an overlap between drywall and horns with drywall layer extended from horn for a few mm is my leading idea. Still I do not have a final solution yet and am conspiring options. How does it sound? I have no idea. I understandably have a lo...
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[quote user="noviygera"]What is that round yellow thing in the right corner of the picture? A driver of some sort? [/quote]Yes, they are Fane 24” bass driver with 24Hz primary resonance. I am waiting for the final sound check; the final is long time ...
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Jessie is correct about the forcefulness of the expansion of many over-the-counter foams, like generic Great Stuff from Home Depot, etc. In fact, many homebuilders were having problems with the foam they put around door and window frames, etc. durin...
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[quote user="anthony"]You get three octaves of horn loading and then the horn attenuates the signal at 24db/octave below the lower knee and 6dB/octave above the upper knee. So a horn with a lower knee of 42Hz will have an upper knee of about 336Hz r...
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Hmmm... I guess you have to start somewhere, and it did originally seem to me that the "headwaters" of the divergent projects were the "original accidental" Dannoys, with the disconnected Scanspeak 10" riding shotgun in a weirdly-connected chamber of...
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.... in home systems for Room correction and general system EQFolks,This is from my own Yahoo group, but may be of interest here....Since writing this I have in fact changed my speakers to dipoles and do not currently use a PADEQ (it will return thou...
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jd wrote :
"...I may have come up with a way of making the BIG horns fairly painlessly..."
Yes well, I really must give up the absinthe !Lbjefferies7 wrote :"...Not "end-of-life"in the sense that it will be built and then I...
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[quote user="Romy the Cat"]The biggest problem that usually people face when they listen the middbas horn is that people tend to make the middbas horns too short. In the short horn the driver shot right through the horn and the LF go not “get loaded”...
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All context of this site except the Forum's posts
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All messages within the Site’s Forum Copyright © by
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