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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I'm also concerned about the range, but I believe that in using an appropriate driver, I may be able to achieve a target range of 40Hz to 400Hz.One reason for my wanting to achieve this range is precisely for the purpose of not wanting to have a 4-Wa...
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ahh yes, tapped horn is what you would call "close bottom." It has to be designed around frequency response (which is very narrow band). It isn't a problem getting one to go low enough though, and the quality of sub bass produced, smooth yet dy...
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We have two models with different upper bass horns, one is indeed a 140hz horn (77 cm diameter) and the original, bigger horn at 110 hz (92 cm diameter) Both tactrix both made from the same materials (MDF) and finished in the same automotive finish.T...
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I'm of the opinion that listening room aesthetics play a big role in enjoying music at home. This is self-evident, but over the many years playing with audio, my listening room has become incrementally cluttered with "audio detritus". It's ugly and...
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Yes, the crossover looks fancy :) More than that it does the job. The vacuum caps are only for the tweeter and the upper-mid beryllium. Still they are bridged with micas as they wont do much alone. Adding vacuum caps smoothens the transitions and sou...
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Yes, John, US residential service is center tapped, with a "true ground", ideally 0 Volts, a legacy of Thomas Edison's old DC system. And obviously, with split single phase, we also need to allow for load imbalances. It is not until just now that I ...
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actually I agree with Romy, to a degree.... If the amplifier is a push pull device, using my output and input splitter devices of course, then an interstage transformer is a much better choice than rc coupling. Using transformers designed to the crit...
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And as one of the other perpetrators...The nature of this kind of thing is compromise. The owner of the bass horn system wanted to run them together, for the enlarged horn mouth, and so we did - there was never going to be enough time to play about ...
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[quote user="Romy the Cat"]The contemporary productions DHT tubes (Russian of Chinese) are superbly firm and have no internal noise when they shacked or hit. The mintage 60 years old tubes what you make the “close to ears” test responses like as some...
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[quote user="floobydust"] Question: the 0.75 ohm resistors in the filament lines on the 2A3. Is it your intent to drive them from a 2.5VAC transformer or a 5.0VAC transformer. Voltage drop considering the 2.5amp filament requirement would result in i...
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I have been playing around with speakers for a long time, and things started snapping when I got into horns. I have a system right now with an upperbass horn from 140 hz turned form MDF up to around 700 hz, to another horn, and another and a super t...
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[quote user="Paul S"]Murat, this latest information from you has gotten you farther along than you might suppose at this time. From what you now say, it sounds like 6 months would be a minimum amount of time for you to spend getting a sense of the S...
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[quote user="Macman"]Hi Romy,Its an Altec 416-8A driver in a ~100 Hz exponential horn, Jbl 2441 in 350Hz tractix, Aurum Cantus G1 tweeter and Eminence Definimax 4012 HO in ~30Hz Tapped horn.I just hooked it up and the highs are promising but I though...
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This gentleman's set-up makes me think very much of the one I have in mind for my new room in due course. Whilst as Romy points out, the room might well be on the small side, it has a very high ceiling (say 4.5 m) that in my mind always presents fabu...
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I spent most of the past year trying to get more/better Big Music from my system. I played with (speaker) drivers and crossovers, and I also spent some quality time on my LP playback, in order to make this happen. I have posted some results in the ...
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Hi Romy,Well, this is my (and my dad's) first horn system so we're learning/building one step at a time. Our motivation is simple, to use horns as low as possible.The very first DIY configuration was:TAD ET-703TAD 4002GOTO 505TTTAD 1603 Woo...
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Anthony and Romy, thanks for taking the time to respond to my question. I want to take on this project as a learning experience both in terms of simply building an amplifier from a schematic and for my edification on sound reproduction.
I’m starti...
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Disclaimer: I love listening to experienced people. However I do not do everything they say. I would like to hear them as it can direct me and save me some resources like time and money and make me think of things I have missed and ...
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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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All-I'm optimizing new speakers, but the deep subject matter is a little new to me. Will this work?Using a pair of Welborne Labs DRD300B SET amps (tapped 8ohms) with a 3-way passive crossover to integrate these drivers. Here is ...
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I have been lurking here for a while and am fascinated at the discussions of TONE. I play trumpet professionally in Germany and have many opportunities to experience big rooms and big pipe organs as well as symphony halls with various degrees of acou...
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[quote user="Romy the Cat"]I do feel that a playback sound has to be built first...The way how I trained myself is to disconnect channels. While I was making Macondo, installing it, moving it and experimenting with it I was frequently disconnecting c...
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Speedysteve, posted the side view of his installation.
http://www.diyaudio.com/forums/multi-way/189377-5-way-project-tapped-bass-mids-tweeter-big-boy-system-3.html#post2581399
It is a bit more problematic. The angled axes of ...
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I do not think that it needs to be with center-tapped secondary but rather with symmetric secondary. I have good transformer with Faraday Shield that might take 6.3V or 12.6V and give all my DH voltages and with secondary that would be completely...
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[quote user="drdna"] It is NOT that better tubes have no vibration. Instead, the tubes that sound best to me seem to have a sort of springy sound, like the sound of a water drop or the sound of the tabla drum being struck. [/quote]
Interesting. My f...
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From: John Hasquin Sent: Wednesday, June 15, 2011 To: Bessnow, RomanSubject: Re: Meow
"I think your decay is prolonged because the larger room is providing acoustical pressure feedback into your 45Hz lower bass horn. This feedback is modulatin...
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Hello Romy
I am in a similar situation although not as far along as you since my "phonocorrector" experiments are yet to start. I in fact have the same valve types lined up so when I discovered your site yesterday there was a strong assonance!
Th...
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Allo
Pieter is super-talented and a great guy; if you are a Larry David fan he looks a bit like his Dutch cousin...
The only problem is that he has a long waiting list... I don't think you would get the OPTs any time soon.
If we will try Sowters t...
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[quote user="floobydust"]The 2A3 can be almost as quiet, but ONLY in the dual-section paralleled types. I adopted a split balance technique. It only works with cathode bias due to the topology but it is effective. You also need a good quality filamen...
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Maybe we in Europe benefit from 230V with half the amperage and not the grounding scheme? Seems to me that line noise would scale down by factor 2 when we get 15V from 230V instead of 110V when using "analog" transformers.
[quote use...
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