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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Anthony, congrats on your amazing progress! I know how hard it is to carve out time for this stuff! I see you are looking for gain from your pre-amp, which makes me wonder if you have been using the passive Placette, as opposed to the active unit, wh...
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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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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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Bill, you have made lots of changes in a "short" time period. I hope you kept track of all of it. Knowing nothing about your sound, I can only repeat that Romy said the Dannoy sonic fulcrum was the interaction between FR Tannoy and "passive" Scanspea...
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Not Amplitude. It's the rock solid phase linearity. It feels like a brick wall all the way up and down. I haven't looked at any graphs and haven't measured anything but that is my guess. There is no question of the great tone of vintage Tannoy but al...
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When the passive radiator in question is mentioned, are we sill talking about a particular active 10" Scanspeak driver that is not hooked up to an amp? Again, the PR is always parasitic, more or less fighting with the active driver, except, apparentl...
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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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I believe a lot of the issues with earlier DD tables was that they were all servo controlled. That is, a feedback loop kept the average velocity constant. As a musical passage of complexity would slow the platter, the loop would respond w...
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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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Well, Romy, it took me a while but I finally got the cobwebs cleared out of the phono stage, and the Shostakovich 10th was totally engaging as music (via the TAP). The recording is the (late 60s) Melodiya (stereo) with Yevgeny Svetlanov/USSR Syp...
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It's dead. Nobody cares about sound anymore. Esp. not about passive listening. The few music lovers left there, are usually immune to their systems, and lack the knowledge to build their own. Most high end audio is a fraud anyway. I agree with Earl c...
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RomanThe main point is that I like the Bass SET aproach with LF capable transformers and have a potent SET to properly drive whole band and take the amp out of equasion in the future when I learn how to build horn speakers. The system I have is an ac...
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Yea. In some systems, mostly trivial / conservative direct radiators in small monitor size, respond to the normal interpretation of frequency graphs very well. With more exotic and uneven dispersing systems it seems to get more difficult. I had it co...
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I have not seen it mentioned but I might of missed it. The PurePower absolutely demands shielded interconnects especially between preamp and amp in my experience. No matter how careful I route the cables, I was getting noise or buzzing from the speak...
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Yes, the "tape (or "monitor") loop" is where I (and everyone else...) always put them.Why not ask Guy how he would approach it, maybe get one-stop shopping and probably the best results, too, for both the "loop" and the "box".Would "passive" curves m...
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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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[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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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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[quote user="Edgar="]
N-Set, I invite you to make your own recording of the phase of your Dunnoy. I used my phone camera to do it and a free online sweep generator. I had Tannoy, Scanspeak and laptop screen all in shot when I filmed and shot...
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I understand someone got good sounding results from - apparently - using a certain passive radiator to effectively lower the Fs of a 10" Tannoy Red. Can it be that the Tannoy has a long enough throw that is still damped in line with the rest of it'...
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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="RonyWeissman"]Attentuators plugged directly into the RCA jacks sounds like good solution for balance control[/quote]Do not forget that you do not need the attenuators but juts one attenuator that you would plug on right OR on left. Also,...
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Thanks, Bill. The system you describe sounds like my brother''s old home theater surround sound, which did a nice job with 5.1 DVDs, for concerts, opera, and musical theater. I presently use only a turntable or CD/DAC source with my hi-fi, in stereo ...
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Hi,[quote user="Genn"]May be it is time to review some basic concepts?[/quote]I am quite familiar with them, thank you.[quote]I'm using today IC based, Accu powered small amplifier, and it reproduces music, without any noise and distorsion from angry...
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[quote user="serenechaos"]Did you use LEAP or anything like that, or just cross everything over 1st order as a guess, and tune by ear? [/quote]
Oh, no. I do not use any LEAPs or others tools, no time domain analyses or anything like this – the...
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[quote user="Romy the Cat"]...it is difficult to design an objectionably performing powerful full-range SET without considering speaker, particularly the moment of LF section damping. It is not always the case the MF, HF and LF would require the same...
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I think it is Wiremold part number L10320. At least it used to be.
It has no filters, no switch contacts, indicator lights or passive protection devices and uses hospital grade outlets....
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Big differences between PS in my giant amps and my DAC, my passive attenuator and my phono stage, TT. PS has to be "good enough" for the application. Maybe "reverse engineered" from the demands end requirements (ie, the mind of the listener). Throw t...
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