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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Scott,[quote user="skushino"]- Remove L-pads from mid and tweeter (sounds a little brighter, yet "more pure" and "better" to my ears) [/quote]Lpad sets the attenuation and this is the parameter that should be tuned without fantasizes and subjectivism...
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Nope, sorry, it does not make any sense for me. The use of Rowland amp I guess is fine if it being use for testing of the filters. Still if you use high-pass for your midrange horn then what resistor does in your RC filter? A first order filter, rega...
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I confess that at one point I tried PM6As in 2.5 cu. ft. vented boxes. Lousy, tipped-up balance and soggy, one-note "bass", contrary to the designer's claims. The only thing good about it was that the box did not add c...
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Those are indeed great recordings, although for some reason I'm not as huge a fan of the Furtwaengler as most. But let it pass, let it pass.One recording that you must become familiar with: Sigmund von Hausegger and the Munich Philharmonic (1938...
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Hey Rom etal.I'm entering into unknown and difficult to intuit territory for me.I aquired a pair of very large constant dirrectivity horns EV hr9040 a, a little while ago and i now have a pair of jbl 2420's to power em. I haven't put them to gether, ...
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[quote user="jessie.dazzle"] I have not heard any other systems using Vitavox S2 drivers, but I know it is possible to get the S2 to generate on-axis unpleasentries. In the case of the system I am building, one can happily sit straight in the firing ...
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[quote user="serenechaos"] on 3) & 4): Dave Slagle, Intact Audio, knows a LOT more about transformers than I do, and the nickle autoformers I got from him work so well, I totally trust his (and/or Jeffrey Jackson's) judgment to over my "guess...
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I do not care about all of Nilsson Pass amps; I feel that all the same and all are very sub-qualified. A few years back Mr. Pass went for his low-powered SS single-ended amps and they might be more interesting. I do not have them and I never seen a...
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i have vitavox S2 and also altec 288c.i am trying to source the fane studio 8m,just missed a pair by 1 day on uk diy.until i get the fane and make a horn for it,i will use altec 515c in vot.i also have jbl 2405.yes i will definitely build the full ra...
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Yes, I totally agree. In my old place, I had the Druids working in FR with the Berning Siegfried 300B, and they sounded exactly as you say.But I'm hoping that the Berning will cope better driving the Druids with a high-pass filter set to around 150Hz...
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Yes, tapped horns are lower efficiency, mine are 105 dB (not 108 - 110 dB like the rest of the system). I don't even KNOW that SET or Class A is automatically appropriate for tapped horns... Something like op amp driven PP in class AB might even wo...
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When I think back to some of the products made over the years I realize that neither we nor the manufacturers really know what makes something sound good. Some of the early pieces made by (and I hope Roman forgives me here) Pass, Van den Hul, C...
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Public - now that is broad. The Public wants easy; not perfect. I would offer a simple two way: 12" paper cones LF with first order low pass [not a horn]. Iwata or Yuichi radial hyperbolic [MF & HF] horn above with first order medium-high ...
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Mats, believe me, I'd love to get off the frickin' grid altogether. But if I'm looking at >20 car batteries just for the K&K phono stage, then how many angels will fit on the head of a pin? Ironically, the K&K also uses JFETs.....
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Well, I never felt that for prototyping I need more then one-channels crossover as by use of the poor sounding prototyping crossovers I never look at the system in it’s entirely but rather for the “technical listing” of just two channels that I...
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***The proper loading value is difficult to say without knowing your system, as it is partly a preamp and ultrasonic RF issue as well as one that involves the cartridge and audible frequencies. Some cartridges have frequency abberations within ...
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well, to add my bit of mustard to this here oldie thread.I HAVE mixed film and oils successfully in e.g. a tweeter x-over of a Burmester 961. The tweeter is an AMT (air-motion-transformer) and very revealing.The original C's are two sets of...
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[quote user="rowuk"] In the case of horns, I think that most fail to see that it is a simple band pass device. [/quote]
Yes, this is as simple as that.
[quote user="rowuk"] Applying a high and low pass filter to a standard speaker driver cr...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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[quote user="Romy the Cat"]If you read the very important post: http://www.GoodSoundClub.com/TreeItem.aspx?PostID=5255 then might understand that it lead to a painful research on the subject. I have ton of data now and many experiments done. If ...
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I know it does not make any sense but it looks like the power line before PP3000 does matter. I took today my large 3kW isolation transformer and place it between my dedicated line and PP3000. I lost my lower bass, simple as that. Yes, the isolation...
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Greg, I have written about my "DEBZ" speakers several times at this site, including Post ID 3269, early in my original Lamm ML2 thread. I mention these speakers now to compare what we are aiming at here to what I have already done, wh...
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Skushino. Yes TH is designed to play 2 octaves and no more, this derives from the design which actually uses a labrynth, in the shape of a horn, to return (and amplify) the back wave of the driver to the front and add its strenght to the output, no...
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"ASR do not use the regular ICs but the ICs that they removed form the demilitarized Russian nuclear missiles console and fallen Chinese satellites" :) ...which means that they use cheap, used ICs. So, the dealer has a better margin & can di...
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Haralanov, I am not sure what it has to do with ego and why I need to see the things “beyond”. If the things you are trying to address are irrelevant to you then do not insist that you opinion is relevant. Any deep MF horn act as low-pass filter, if...
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[quote user="Romy the Cat"]Not kidding?! :-)Yes, I always felt that Tannoy the vintage 10" sealed box were the best Tannoy out there. Still they were the best not because they were best but because the 10” had less bass extension and did not go into ...
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I continue to be amazed at the varied views relating to BAD power at certain times of the day.I broke with that 10 or more years ago in moving to amplifiers, line amps and DACs configured with switched mode supplies.I not only keep my DAC permanently...
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TAD TD-2002:I have been evaluating these without horns. Essentially, listening to them without the horns, but also with original horns. No difference, as I will describe what I am hearing in both configurations (applies to their high frequency reprod...
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[quote user="Paul S"] I took a couple of pictures, but I can't figure out how to upload them, just yet. [/quote]Hi, Paul. Take a look here http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=1120 [quote user="Paul S"]I took out the phase plug, a...
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I know, I know, it is absolutely not NECESSARY and I do not think that I see a need for it. I however see that it might be USEFUL in SOME cases when a recording was mastered by a complete idiot.
So, I wonder if anyone comes across to very high...
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