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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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My minimal distance between front of the upper bass horn and listening position is irrelevant as I set the proximity not according the upperbass but according a vertical shifting of HF image. Under a normal circumstances I might be as liitle as ~7.5”...
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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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[quote user="Vasyachkin"]the only real questionable aspect here is adding a second set of back firing, inverted phase horns. mathematically speaking it is what the design "needs" but of course the real question is - what does it sound like ? that's...
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Romy wrote: "...I still do not know why you have weakness in 80-160Hz octave. Your upperbass shall cover it perfectly fine..."The last time I measured the upper-bass horn, it started tailing off just below the horn's physical cutoff (115Hz); lets see...
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Jessie, do not forget also while you do your alignment experiments to listen the system from different distance. Get a reference whatever it is and then make a step back and a step forward. Try to discard the upperbass changes and pay attention only ...
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Hi, Marcus
As I understand it is 15” loaded into 110-150Hz horn, MF compression driver in 350-400Hz horn, Ribbon tweeter and a pair of tapped horns? Looks good.
If it were up to me than I would paint the entire baffle with tweeter and MF i...
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Interesting that someone has mentioned Tannoys in context of the upperbass thread. I still wait that someone with sane taste and unadulterated perception of results would load a LF section of Tannoy Red or Silver into a front-loaded 70Hz -80Hz horn a...
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I think the most interning would be to learn what kind MF and upperbass drivers were used, particularly the MF. I hope they are not the German BMS drivers as it would be a major turn off. It looks like 2” throat, would it be possible that French folk...
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[quote user="drdna"] You are correct, though I believe the subwoofer covers only below 40 hz. [/quote] So??? [quote user="drdna"] This is coming from the same person who has built a 6-channel DSET? Anyway, it was more a thought about optimizing the o...
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This seems like an appropriate place to share my latest thoughts about Macondo copying!I thought I built almost copies of the Macondo upperbass horns, yet I've really only achieved quite questionable results. Impressive from time to time, but never f...
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[quote user="Greg B"]http://www.modernsolutions.com/artichoke/images/hornbwfront.jpghttp://www.modernsolutions.com/artichoke/images/hornside.jpghttp://www.modernsolutions.com/artichoke/images/horndan.jpgOK, here is my attempt at the big white trash s...
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[quote user="homebuilder"]...active EQ will be a part of this project, along with in room measurement. My friend will do the honors on that. I have not purchased an EQ yet. [/quote]
You might eventually revise your view about the active EQ and pres...
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Impatience got the better of me, and I called two mates who prompty showed up yesterday afternoon and we hefted the second DSET into place on the horn stack. A couple of hours of connecting and checking things and it was all ready to fire up for my ...
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Here is a picture of my upperbass horn’s back chamber. The actual chamber is approximately twice smaller as it patched internally with construction foam (a wonderful John Hasqiun invention). The dust cap of the driver is where the weight is hangs dow...
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Maybe it has some interest but:- Backloaded bass horns- 2" midrange driver with Beryllium membrane- 1" tweeter with Beryllium membrane- 0.5" super-tweeter "a la beryllium"sounds quite worrying to me.Nothing is said about the upperbass channel dr...
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[quote user="dazzdax"]Romy, are you sure the unborn fetus is exposed to sounds in the 200-400 Hz range? I think it's more of 30-200 Hz (conducted sounds of mother's heartbeat and footsteps). I think babies are also sensitive to these range of sound: ...
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[quote user="Jorge"]Now if you design a TH for 70 hz, you can use it from 35 hz up to 140 hz, and that could match up to your 142hz front Upper Bass horn. With this solution you completely eliminate the need for a Folded horn midbass channel, that ...
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Haralanov, this is very interesting way of looking about the things. So, you feel if to slice the upperbass vertically by multiple channels then it has some benefits, kind of odd to hear it from a person who advocates a single driver approach :-). So...
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Well, the second Bass Cannon stack is up and in place.I have to say that the room feels better with the second stack up. There is now a symmetry and balance and I feel as though even at 8 each side they do not overly detract from the horn stacks. I...
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[quote user="Romy the Cat"]Of cause not but did you read and understand the Macondo
Axioms? The Macondo Axioms proclaims that an individual driver and individual channel
have to be set in maximum suitable for own topology operation. According to Go...
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I have been running my new Ortofon SPU Mono cartridge and can’t figure out why SPU has such a strong positive reputation and why some SPU users when I ask them about Sound of those cartridge they roll up their eyes. Yes, it is all around fine cartrid...
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de Charlus, this “are not afraid of cabinet resonance per se” is complicated subject. I have raised the topic in the “How to USE “Resonating Oops” in loudspeakers” thread:
http://www.goodsoundclub.com/LatestPosts.aspx?ThreadID=3833
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[quote user="Romy the Cat"]If I were in your situation and have 2m long 100Hz horn that
I like then I would not dive into any 200Hz la-horns. Make your 200Hz horn up-to
let say 1000-1200Hz. Then take your 550Hz and run it from 1200Hz to 10.000 and
...
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[quote user="coops"] Cessaro will be playing …. the full Gamma system at next years Munich show….[/quote]
Since I promoted the Cessaro Gamma to be a contender for the most promising commercial loudspeaker I would like to pass a few critical co...
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If I were in your situation and have 2m long 100Hz horn that
I like then I would not dive into any 200Hz la-horns. Make your 200Hz horn up-to
let say 1000-1200Hz. Then take your 550Hz and run it from 1200Hz to 10.000 and
up. Vice and configure thi...
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Wow, Jessie, thanks for the detail deals of your idea. I have spent last evening to contemplate many possible design configurations and I desired to discard all my former ides of metal fine-tuning, even my machinist in on standby expecting my ord...
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[quote user="jessie.dazzle"] Could you clarify: Would you like to vent the rear chamber or increase its volume (or both)? This weekend I will try listening with the rear covers on the Lower-Mids slightly open... [/quote]
Good question. I do no...
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I sometimes visit an Australian site and familiarize myself
with progress of “acg” who it trying to build Macondo like acoustic system.
http://www.stereo.net.au/forums/index.php/topic/75784-deep-end-diy-my-first-speaker-project
A few weeks a...
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Romy,
The upper bass horn has a Ceramic driver 18sound 8M400, the MF horn has an 18sound 2060A Neodymium magnet, tweeter is Beyma Ceramic driver and supertweeter is Fostex Alnico. The Leak amps are PP deep class A, we do have a...
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Thanks Romy for showing us this work and the thoughts of its creator(s).I'll say it again; the world needs more people like these guys: Human creativity remains the only saving grace of an otherwise pathetic species. It would be most excellent if Kl...
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