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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Trying to explore the upper bass channel reaching up to a Victor Sierra 360 Hz horn with an Altec 804 with a 4 uF oilcap, I first used my OB Supravox 215, then a B&C 8" woofer in a large BR originally used with EV 15" (the latter not good) ...
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Hello Romy, thanks for your guide.I've been thinking and I feel that some basic upper bass channel ideas are forming; they a result of, as you say ,"organic" derivation from the rest of my acoustic system. I am pretty excited about this idea i have. ...
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[quote user="Romy the Cat"]Here I share some thoughts about what you have shown. I will
share only critical and warning thoughts not because I have nothing but critiques.
All nessesary compliments for your planning come as a default and I do not
t...
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[quote user="Romy the Cat"]That is my constant dilemma while
I socializing with audio people. Om a surface the question about T/S parameters for Goto is reasonable.
It means now I need to correlate whoever I know Goto user and the people who
know ...
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[quote user="nl"] Within that horn-loaded range, the 210/515 type combo does reasonably well, and produces rather more inspirational midbass than most direct-radiator type strategies. There is a reason why these designs persisted for roughly forty ye...
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I've only had the pleasure of listening to 'professional' horns (whatever 'professional' really stands for)--horn normally used in concerts and small venues. (It was always so obvious to me--by listening--that the range of the horn-loaded 'bass...
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I'm giving myself high fives today for nearly solving the broken piano sound in the room. :-)I'm not sure what fixed it, but I believe it to be a shelf half filled with records + two sofas and a carpet.There is room for improvement but it is a g...
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[quote user="be"] "another big selling point to me was the 505 being a low resonance compression driver.. there just aren't many drivers with a resonance in the 80 to 100 Hz range like this driver... I have just begun my playing, but am already quite...
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Hello Angelo,
Even though it may not be a good idea to use a phase plug in a straight Upper Bass horn, I did find the information educational, and just wanted to thank you for the link. Thanks also to Romy for his comments on the subject.
The d...
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Part 5: HornsIt was quite bad, bad on all horns…..
The first was the “new horns guy” …
(references to: http://www.goodsoundclub.com/TreeItem.aspx?PostID=484)
This year behaved quite nicely. Seeing me he immediately told that he has not...
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About horn body resonance: I used to doubt the need for mass in horns; after all, how much energy can a flimsy paper cone generate? Still, I went ahead and followed the advice of others when building mine, making them very strong and heavy. With ...
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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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Here is the list of the thing to do with Vitavox S2 in order to use it in 4-ways installations. The S2 must not be used in 2, 3 ways systems. It possible to do with S2 whatever you wish but pretty much any other way to utilize them produces some very...
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[quote user="coops"]Yes primarily i viseted Thomas to compare tonearms, he has a couple of Schroeders, the new graham Phantom ( mark III ) a vintage Ortofon amongst others. and he has a fine collection of cartridges, as I mentioned he is a very nice ...
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[quote user="noviygera"]
For me personally, midbass is the most important frequency range when it comes to sound reproduction. I believe you will be on the right track to focus on this range because so often it is overlooked and treated with super...
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Romy wrote :
"...This BTW expanse what we have such a differences in assessment of leaking he the S2’s back chamber. (It was somewhere in past)..."
I would just the same like to confirm my findings one more time in the new room; I will run the test...
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Romy, I re-read your comments a few times to better understand your feedback. I think you are saying the effects of my room may be dominating any problems with the Edgarhorn bass, or at least I can't know since I don't have any objective data. Is t...
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Romy,
>If Bruce suggests that his folded upper bass horns works better then his straight horn, and if it is correct (do not forget the he said about his horns), then it means absolutely nothing.>
Dr. Edgar - who designed and hand made the...
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[quote user="CO"] Ive been building and improving my own speakers the last few years and at this point i'm thinking a fully horn loaded setup ( 3 way + sub ) is the best route to take to get a speaker capable of faithfully reproducing the elect...
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Jessie, I have moved your post to your 45Hz horns thread but then decided to keep it here as some of my comments would be about entire system not only about your midbass horn. Anyhow, there is nothing there to laugh and it is pleasant to see that som...
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Romy Hi, Raplh uses a 300b push pull, but the power supplies are massive, parts alone 15K Euros, each channel has a separate supply, the pre-amp again two massive power supplies , he prefers to use eight of the horn loaded bass bins, although I...
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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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[quote user="eduardo"]
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. Ir...
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Hello Romy!I just listened to this system http://www.hornfabrik-eder.de/index.htm which has an 8" Görlich in the upper bass horn and I couldn´t find anything "inherently faulty" about > 4" without compression. The kettledrums sounde...
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A few things I would like to say in context of Pham’s playback.
I will leave his infatuation with turntables alone – man like to collect turntables and he within his constitutional right to do whatever makes him happy. The problem that I see ...
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I've had a long-time desire to replace my Edgar 80hz midbass shells with a better performing solution. My Edgarhorns arrived in 2005, and I made incremental improvements over the years until now they have little in common with the original Edgarhorn...
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Yes, the topic is really interesting, at least to me. There is one thing
for sure – the man who starts the development of his acoustic system with a blank
sheet of paper, must have a lot of experience in arranging different channels
in terms of ps...
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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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Ok, I have been experimenting with placement : Long wall versus short wall. Though the frames have wheels and roll very easily, my room is cursed with an elevated platform smack in the middle of everything (about 14 inches higher than the main floor)...
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[quote user="decoud"]Since the 8M is now no longer to be had anywhere, for love or money (delighted to be contradicted on this), would people care to suggest alternatives for precisely the use Romy puts it to: driving a round, 3-4 inch throat, upper ...
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