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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Yes, you are right it is rather my negative prejudges and I should not proud about it. It perfectly possible that Bend is a fine performer…. Still, it is a transformer and no mater what you do is a band-pass filter. It is still inductance at the bott...
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[quote user="op.9"]the horns come out of a rakk dac with lundahl LL1674 passive outputs the midbass use a behringer DEQ2496 (26cm delay) modified with passive outputs.[/quote]James, if you use this DEQ2496 then you might find this thread worth attent...
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[quote user="Antonio J."]Thanks a lot, I've forwarded to him your answers, let's see what he says. I have tried Mundorfs in some critical places in the integrated tube amp I'm using now and they are pretty good, expensive, but not at the level of tho...
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Found some interesting comments on an independent web site, Twogoodears.
I'll copy it, it is from 2009 with original lines from Arthur Salvatore and a comment from Stefano Bertocello - Twogoodears owner -, we will n...
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[quote user="jzagaja"]To make the story short Autotech is a family business located in Lublin, Poland. Younger brothers graduated in mechanical engineering are cars and racing lovers - with scores in Europe as professional drivers and mechanics. One...
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[quote user="Wojtek"]With the stock radio-CD and buzzing fulrange speakers in my Civic I often find myself puzzled how pleasant and musical this crap sounds. If only I could get close to it at home -fruitless pursuit so far .Romy when it comes to tub...
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[quote user="Romy the Cat"] For a casual observer it might appear that I am constantly fought with my ULF, finding and loosing better and worse configurations. It might be so but I have a very strong sense of objective of what I would like to ac...
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ThanksFor some reason, I can't attach pics. I use the attach key, but when I post, nothing happens...sorry.Here's some pics on Stereonet (in Australia) with my build pics.My comment re you cringing over Selenium, is that these are cheapish...nothing ...
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If we are taking about multi-way horn-loaded acoustic system then in my view is it very important to plan the development in a specific order. Any deviations from the order are perfectly fine but they will affect cost/time/efforts of the project. Thi...
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[quote user="MINGSU"]As you pointed out, there is no simple answer but manufacture recommendation should be the 1st to try.[/quote] Well, I have no idea why you stress the manufacture recommendations. I do not think it was the subject at all, not to ...
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Jeno wrote:"...It looks like the system John Sheerin developed..."Clearly that IS the system. To see it, once having clicked on the link Jeno providedhttp://www.jhsaudio.com/index.phpyou need to scroll all the way down to the box in the lower right c...
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[quote user="decoud"]This is a synergy horn, a topology that Danley has a patent on, I believe, and certainly the most expertise. There have been extensive discussions on this site about it, including Romy's theoretical objections to the idea. In a s...
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For a casual observer it might appear that I am constantly fought with my ULF, finding and loosing better and worse configurations. It might be so but I have a very strong sense of objective of what I would like to accomplish. I want to reinstat...
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[quote user="Marc HENRY"]hi all,thanks for your interest !yes the frame is curved, HF and MF are //yes there is a phase plug in the bass horn. This cover 80-300Hz.there is a separate infra-bass section, covering 20-80Hz.images of the bass phase p...
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I dont want to hack this thread into TH, I tried them with sub-amps 150 watts and they didnt sound good, but I was using a passive preamp, when I added an active preamp things started to get better, now with 12 watts and a a lot of gain, bass is ama...
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Romy,Thank you for constructive suggestions, they will be very useful tonight. I am slowly getting the hang of this system tuning and observation approach that you advocate. I do not have separate identical amps (or one multi-channel) for separate sp...
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first post, hi everybody!plan to build a midbass horn around the gpa 515-8ghp, throat 9,9", mouth 24" x 39,37".945something sq inches.(excuse the strange numbers, metric units in europe)crossed at 500, s2 alu diaphr.(is it normal for the metals to ha...
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hi all,thanks for your interest !yes the frame is curved, HF and MF are //yes there is a phase plug in the bass horn. This cover 80-300Hz.there is a separate infra-bass section, covering 20-80Hz.images of the bass phase plug and the infra-bass sectio...
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I did not make any genratorov . System pictures for a passive, in terms of electricity. Nevertheless, the acoustic power during installation increases 2-3.5 times (depending on the acoustics). Diagram of electrical circuit including a power amplifier...
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Hope it isn't the case, but it sounds like you have just described "the best sound" (or, in any case, the sound you're after) from Remedios as being limited to 90 dB SPL, through your wide range of experiments with the basic configuration. I don't re...
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In Macondo/Melquiades thinking, random process means random result - and that is exactly what happened with Dunnoy. A random driver was placed in a random cabinet with a random passive radiator and random cabinet damping. All subsequent attempts to r...
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Hello to all, After following the comments of Romy for some time (have learned a lot, thank you), I would like to ask a question on this subject.This circuit is built with resistors, diodes and capacitors. Could someone elaborate how it can produce a...
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[quote user="Jorge"]Hello Anthony,I did experiment with metal tubes for bass in a sealed configuration as you are planning. The weight of them, even made out of thinner than you would like steel, is prohibitive. If you make them out of aluminum pipe...
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I finally set it up new Tannoy Red best Twitters. They are sealed irregular shape and purely themselves do not sound bad. They do not have the full range feeling as they had with passive radiator and had a typical red sound of late Autumn leaves....
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Hi, true thats why i wrote designated amp (Active). As a passive xover thats rather difficult, so try a low Q filter type that increases steepness slowly. Like a Bessel (Q 0.585) or if youre skilled calculate your own Q smaller than 0.5 (LR) as a 8-1...
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Hello,
I have owned a TDA1543 based [url=http://www.sakurasystems.com/articles/Kusunoki.html]Kusonoki[/url] style (passive I/V, digital filterless, non oversampling) DAC for almost two years.
You can have a look at the measurements [url=http://ww...
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Hi,I've just taken receipt of a Model 2 to use as a DAC in my study (using the ADC occasionally for recording live from a mic). I would like to feed the balanced XLR outputs of the Model 2 into the single-ended RCA inputs of my Berning Siegfried amp,...
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This is what you need to know - these are the equations you need for a passive line level filter:http://www.t-linespeakers.org/tech/filters/passiveHLxo.htmlYou also need to obtain the input impedance of the power amps in order to calculate RC values....
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Confirming our concern about digital crossovers, by Harman international, the parent co. of DBX, today at 11am, and I will quote, "theoretically they compress the sound" and also I will quote, "it is a concern for live recording and not live sound". ...
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Another tool used by sound pros is LEAP. The guy who designed my BassZillas (some time ago) used this tool to make the most of a BR enclosure. As for the Fostex (U)HF, the pros tend to correct them digitally, as they need "something". Mainly, did you...
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