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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="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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The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996
Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...
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Here's how I will initially position the mid bass horns. The imaging is excellent....though I give a little away in dynamics. The 12-inch B&C drivers kill the puny 8-inch Fane drivers for this application. Well done John Inlow for this design. I ...
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Excerpted from:http://www.volvotreter.de/pics_plans.htm
Design Basis Summary
total horn length (incl. back chamber) shall not exceed 1,00m
the horn shall have conical approximation of a hyperbolic flare contur with m=0.6
the horn shall have a...
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One thing to bear in mind with the bass horn delay - I thank Tom Danley for explaining all this a while ago - if I understand it right, a small direct radiator (ie small in relation to the wavelength - which will obviously be the case with ...
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I'm wondering has anyone actually tried using the pro sub horns, similar to EAW LA400 (about 36"x36"x24" or similar size). There are a few different products available, such as Fitzmaurice tuba, EAW, based on a 15" or 12" woofer. What are your experi...
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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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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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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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Bass horn sub now fitted underneath, with false shelf added for the righ hand side mid bass horn.
The extra height is good....90cm to floor for tweeter, 110cm for the mid horn.
Just a nice BIG wall of sound...wit...
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The new bass horns are front loaded, and can be positioned either vertically or horizontally, they are actively driven.Keith....
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This article was written by Johan Dreyer in 2006 posted at AA and the reposted recently at a Johan's local South African forum:
http://vinylsa.co.za/forum/viewtopic.php?t=1016
I desided to give to the Johan’ thoughts some exposure at the horn-citri...
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Hi all
Romy wrote:
"The next post will combine subject of upper bass drivers and upper bass horns. It will be “THE PROBLEMS WITH HORNS: UPPER BASS”
Please be advised that I recognize bass as something that should be reproduced by 2-3 c...
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[quote user="Kerry Brown"] Yesterday a friend of mine brought over a CLIO analyzer and we graphed the impedance vs. frequency. I was surprised that the subhorn measures like a ported box tuned to 50 Hz ! [/quote]Yes, this all is very explainable. The...
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Jessie,
Perhaps if you search something in the throat jungle you might fish some interesting results. You see, optimizing the driver to throat transition you might get some HF out of upper bass driver. But besides getting more HF there is something ...
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.... available bass horns are the same to me and I customary discard them. I also care less about the price: I am talking about an interesting horn design but not about an interesting product to buy. The beryllium cones - yes I do not like them in TA...
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Romy, I'm very proud that you are following me and commenting my achievements.I just don't understand why you are doing it in a manner that you are the one and others are idiots and morons. If you don't understand others, you can ask them questions. ...
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TubeBuilder,you wrote>>>I have some ev15 woofersYou may be able to use them in Bruce Edgar 80Hz straight horns or better yet, he has a more properly proportioned 100Hz straight horns which are bigger than the 80Hz horns but have a ...
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Romy wrote:"...The legato expressions the properly midbass horns handle with untouchable grace. The short and ultra short expression the bass horns tend to possess “longer” then it needed..."I've sort of been wondering if you might bring this up; it ...
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After living for a few years with Edgar 80Hz straight horns, I've had many urges to find a better sounding solution. I have a reason. Every time I turn them off and continue listening without them I notice that something good happens to the sound. It...
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These are some theoretical questions, I guess we can only build them and see, but some would be clear no no....
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Hello,i made a few bass horns for home use:[url=http://www.abload.de/image.php?img=hm-moreart11pichrc5.jpg][img]http://www.abload.de/img/hm-moreart11pichrc5.jpg[/img][/url]a seat, writing table[url=http://www.abload.de/image.php?img=baufoto9eckh.7rgu...
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audiofilofine, you need to form a question in a format that would indicate you do the your do some homework. To bulb or even to design 20Hz horn is complex task and it usually made to the specifics of the given circumstances. As rule to use properly ...
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Gday I am building a horn system. Ihave 2 sets of plans .http://www.volvotreter.de/downloads/150Hz_Midbass_Tractrix_Horn_v1.3a.pdf this one is a 150http://www.geocities.jp/arai401204/Download_Page/Download.html and this one is the first in this page ...
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Hi Romy…and fellow audio nutters. I’ve bitten the bullet, and shifted from BLH to front-loaded. Yes, I was an idiot, a moron for not doing this sooner. My project is ‘humble’ by Romy’s standard…but I feel it meets the following objectives I h...
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Romy, Is there a consistent effect from too large/too small and how is it analyzed? Working on a new horn that I had turned by a fellow in Hungary and have made my back chamber so that I can easily manipulate the volume but have no idea of what to e...
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I know, I know, I know…
Any person who in one way or other practices horn-loading loudspeakers has a wet dream about bass horns. Here and there people built them. Here and there you can hear the assuring and overconfident statements like: “the...
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This there is the last in the “THE PROBLEMS WITH HORNS” cycle. The previous threads might be found at:
Problems with horns: tweeters.Problems with horns: mid-range horns.Problems with horns: mid-range drivers.
This would be probably the most contro...
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Romy,
More to come soon but a couple comments regarding bass horns ( and one on Tractrix horns ) :
The Edgar Seismic subwoofer ( 18" JBL E155-4 hyperbolic-exponential folded horn, 40 Hz Fc ) works very well in my room - much better than the 1...
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I pretty sure we are talking the same things, ie
Phase shift = frequency dependent delay - spreads a signal out
Geometric arrival delay is linear phase - delays all frequencies equally (obviously)
I was just hypothesizing that a slightly ge...
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