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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I am going to show two different simulations for a 105Hz
tractrix horn with the same 8”driver (B&C 8PE21). The parameter values for these two
simulations are quite different. However
the simulations predict the same great flat fre...
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I am using sealed bass arrays of 3 per side. I have six 10" scanspeak woofers in total. I aim to operate them from 38hz to 160hz with qtc 0.707I also have a tapped horn that I am using with my current horn system. It is 244cm's high and 125kg's compl...
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[quote user="Romy the Cat"]How many octaves from fs? We are taking about how many fractions
of dB not octaves! Look for a threated:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=2991#2991
…as a good start. [...
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First off, I forgot to mention an interesting observation: Before running the sweeps (previous post), since the drivers in the upper-bass horns are new, I decided to verify/optimize rear chamber volume (they are easily adjustable)... I wasn't expecti...
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Romy wrote:"...The material itself – what to use. I am wide open from any type of wood to synthetic panels (like cement panels). Perhaps it might be a combination of organic and synthetic layers..."I realize you won't be doing the work yourself, but ...
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Hello,not for PA that´s right,but up to 95-100 dB max.there are a lot of goodHiFi bass driver.normal listening level 55-65 dBthe trick is themembran movement interlacingand the bass horn mouth distancelook in the middle:http://www.hm-moreart.de/11.ht...
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About the bass, which must be lacking in such a construction:I once made an experiment with something similar (single "cut" horn with "mouth" directly adjacent to the driver), and subjectively there was much less bass extension when I placed a barrie...
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Marc Henry-In the 6moons write-up, you mentioned the Altec 515 re-issue not being satisfactory for your purposes on the Grande Castine horn. I presume the specific 515 variant you used was the 'g' type (designed for horn loading) rather than 515'b' ...
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i am a fan of this.
who said that music is supposed to be ONLY about sound ?
until recording was invented musical performance was never ONLY about sound. because there was also something to SEE for example.
although i can still hear 25 hz i...
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[quote user="Romy the Cat"] 1) Horn loaded drivers are narrow-bandwidth transducing system. The wider range a horn channel covers the more it conflicts with restrictions of own topology.
2) All channels shell have strictly parallel axis
3) ...
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Romy,
I have also noticed a difference in the response of my Altec 416A's with various amplifiers. My best rated amplifier the Bryston B60 was the worst and I could not listen to the speakers. I have been using a ch...
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After a lot of extremely pleasurable listening and reviewing own expectation for bass I went down with my bass level quite significantly. I rolled back the change in my bass amp gain and not I am at 5th click, which is about 12 dB down. So, not I am...
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I have with bass not a problem but dilemma. I do not have problematic bass but I have a dilemma how to supplement my current bass with ULF without affecting my current bass. Adding ULF defuses my current bass, renders the bass phasing to be more ...
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Thanks for sharing these images Serge.I would like to learn more about the Audiotekne bass solution.What size driver is that, is it a sealed cabinet, what is the baffle,and what frequency range is demanded from this box?Ho...
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Hi everyone,It is quite ironic that the day I hear from Fane telling me that the Fane 8Ms are finally ready, I should receive this update from my horn maker maestro. Russ Collinson of Layers of Beauty. Russ, if you ever read this here, please take a ...
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I can see objections to using paralleled tubes to achieve higher power where the channel has a single driver, but surely where you have multiple drivers differences between the drivers themselves would render any disadvantage of using (say) one tube ...
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[quote user="haralanov"] Romy, the actual sound benefit of this 4-channel upper bass configuration, is rather in the type of sound presentation. The commonly used single upper bass horn (or direct radiator) sitting under the midrange horn, gives the ...
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Hi romy, mine are the 515-G drivers. I will be x-ing over at 600hz to Vitavox S2's (2nd order, yipes!). The S2s are in 320hz LeCleach horns. I was kind of hoping for just a general reply like when you guys look at a pictu...
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The Bass OPT's for my DSET have been wound. We have come back to a 1000R plate loading and into 1R the 6C33C grid clips at 9.36W and 5.8% distortion. The -0.5dB points at full power are 5.9Hz and 5kHz.A nice result really, and about where I thought...
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Hi,Thanks for pictures, that looks interesting. You are using one driver per side for your system it looks like?R Weissman ...
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[quote user="Romy the Cat"]Sand damping it beautiful, it is well-recognized, but you do pay cost for it, in your case the cost is space. [/quote]I know that Romy… but without the massive amounts of sand, there are always some vibrations felt when I t...
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Facing similar issues, until confirmed or disproved by experimentation, the following represents my view:Situation 1):Mid-bass horns aimed generally TOWARD listener's ears: Alignment of the DIRECT OUTPUT of the horn for time arrival to listening poin...
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[quote user="slowmotion"]I don't understand what you mean here, Romy? To me "live" bass ( like when listening to an orchestra ) is much more dynamic than any reproduced bass I've ever heard. Also if listening to a real contrabass in a normal listenin...
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more info about this horn from AA:http://db.audioasylum.com/cgi/m.mpl?forum=hug&n=107444&highlight=edgar&r=&session=These horns are an alternative to my 150Hz Tractrix. They are 77Hz, 3/16 mouth front horns with a conical shape. This ...
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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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Hello Romy and everyone here, Thanks again for your thoughts on the large horns. It seems best to start a new thread, as previous threads dealing with the "10-Footer" originally began as discussions of other subjects. Romy, you may want to move previ...
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hi Jd*
probably u know the site of volvotreter, with quit a nice description how to built a wood tractrix horn.
http://www.volvotreter.de/roundhorns.htm
i want to built a tractrix horn with 95cm diameter hornmouth. Have u made such a horn ...
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YL 75000 has heavy phase plug indeed , rca style (see sketch) while 1250 ( I never had one) gets a fixed metal dome equivalent to spherical piece on 75000 and rca plugs without conical shape pointing the exit of throat. Ironi...
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