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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="Jeffrey Jackson"] Also, I had never dreamed of a driver with a variable compliance resulting in a variable free air resonance... such a toy would be wonderful with custom midbass and bass horns... [/quote]
It is why I use cone drivers f...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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[quote user="Dominic"]I'd put your sub horns above your head. There are some big issues with that but you save a lot on concrete engineering, and assuming space remains in future you could apply what you learned from the overhead wood horns to a more...
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Dominik, Jessie is right - it is irrelevant the precession of your profile if you horn does not go to high into HF. The LF gain of upperbass horn happens in the first half of horn anyhow. I do not insists that I am right but I have a hypothesis that ...
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[quote user="jessie.dazzle"] There may be better drivers out there, but with my level of experience, I doubt my abilities to recognize them. So though it may resemble laziness on my part (remember, this is the same person that will be constructing a ...
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Thanks for your comments, Romy.Edgarhorns weren't an obvious choice. Many horns never worked for me. The Avantgardes left me cold. So did the single-driver crowd (I just don't get it....), Altec VOTs, PA systems, etc. But there were some systems ...
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[quote user="jessie.dazzle"] I might be totally wrong, but I just assumed that Vitavox's decision to specify a lower impedence voice coil for horn-loaded applications was related the additional load placed on the driver once mated to a horn, resu...
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I'm also of the opinion that the bass is one of the most critical and most challenging parts of playback. Not talking about quantity, but rather the quality of bass reproduction. My approach has been to split the bass in two parts - Low and...
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I've been thinking abut this question form several angles. Firstly practical.I thought I'd better see what low bass sounds like. And to get some idea of placement possibilities. So I set up my LS3/5as in the (rather cold) un-converted barn. Couldn't ...
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[quote user="Romy the Cat"]One of the emails that I receive is very interesting. The author warns: “...when experimenting with throaths I found that if the compression is big, near 2 or higher you get some big, smooth, unfocused aqualung sound. You...
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Romy:I hope you go ahead with your project of installing the horns in your attic as you are probably the only person who might pull it off, but if my opinion was solicited, I think you would be very ill-advised to do so. Firstly, the costs involved a...
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I want to share what I feel is a good application of an injection channel, as introduced by Romy. But this is different and also useful and i can tell you it works and very well. Of course, I do not recommend to use this application in the same exact...
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[quote user="Markus"]Re-reading, I realise you stated your preference for a sealed bass array only in relation to Dreyer's bass horn, not to bass horns in general.[/quote]Markus, it is not only about the Dreyer's bass horn. It is about lower bass...
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Ok... Assuming the lack of time alignment is compensated for via a DSP:
There are likely large chunks of the frequency spectrum that go un addressed, and equally large chunks that are mall-addressed.
I would say that there are two main ranges ...
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Hi Romy,
Sunfire? No! Who would add a Sunfire to this system? The black box in the pictures a power amplifier for the midbass horn.
A second MF could be interesting. I will see if we can do some test set up of this. Per has the space for it...
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Ok, Andrew, this is allergy something. I would highly advise you in future before you post any discrete updates, questions, and ideas about what you to inform about the holistic objective of your project, sort of a view from 50.000 feet...
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[quote user="be"]Both the Fane and the Goto where used as compression drivers, so there where no principal differences of use. [/quote]
Wow, who made such experiment? Bring this person to my forum, it would be interesting to interview him! I still d...
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http://www.flickr.com/photos/11441631@N00/2976547917/
Perhaps you could pull off something like this. Of course, it depends in which way you were not comfortable with the 30 ft. ceilings. The added tunability of the room would be a good ...
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Actually you put it absolutely beautifully; I should map your post to the Knowledge Tree. I would put in your formulation one more ingredient: the reverberation time in the room. The larger room and longer decay at the given frequencies the less anno...
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[quote user="rdrysdale"]Our bass driver has a 12v field coil motor, it developes just over 20 kilogauss flux density using a low carbon steel pole piece. The exit diameter is 4 inches at the moment. The diaphragm is 6 inches in diameter and made of a...
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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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Angelo, I do not think this site add anything applied to the subject. I personally do not feel that upper bass horns require any phase plugs; quite in contrary they are dreadful for upper bass horns. When a straight horn employed then the horn does n...
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[quote user="speedysteve"]Well, I think
it is horses for courses and the tapped horns are a bit of a different
gigi. I found it is imperative to suffocate the
rubbish that is coming out of tapped horns above say 100Hz - mine are sized to
work...
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[quote user="coops"]Romy just a quick post, after the Munich show I had the oppurtunity to spend a few hours listening to Ralph Krebs home system, the Cessaro Gamma's, super sound, the antithesis of almost everything I heard at the MOC, regards Keith...
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Chris, yes and no. The phase shift 90 degree of there perhaps but it is not really relevant. If we have a very low frequency horn, crossed low with high order crossover and the entire horn is delayed at 30ms then we do not have the same negative impa...
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Hello Romy,Thanks for the great explanation, I'm a newcomer to horns, so please treat me gently ;-)Very interesting info, so in essence there are two limits, the real "hard" limit, where you risk damage to the driver, and the "sensible" limit, below ...
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Paul Hi, I don't consider myself a dealer, just an enthusiast, I just wanted to discover just what was possible with audio replay, Thomas Woschnicks system (whee i first heard the Alpha's ) was just more real more like real life than anything I had b...
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I have also a fondness for this design which may well suit your room with the line sunk in your basement. It is interesting that this design makes use of two woofers in push-pull configuration as well as making use of a transmission line. The only tr...
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[quote user="oxric"] RF at Ona wrote:Now the same issues and analysis applies to your woofer towers and with the new placement of the towers some of these effects may have become exposed.If these effects are significant than your new wider spaced UL...
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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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