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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Completely understandable. That's why it's fun! It's enjoyable to make something, study the results, make changes, and start over! That seems to definitely be the theme with horns from what you guys are telling me.So it sounds like I shouldn't expe...
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Somewhere within this thread (or perhaps somewhere else) I have mentioned that my own playback systems last times was dead-installed into the DpoLS approximately 5 years ago. I kind of did not make a whole a lot of attempts with DpoLS since I was doi...
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I had in my basement Marchand X26 crossover that I use over 10 years back. Since my B-2 power amp with passive filter is being fixed I setup the stock fixed B-2 with external Marchand active crossover. I spent some time to modify the Marchand X26 bi...
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An audio guy contacted me today with and an interesting note: “can't put a piano in the same room as a hifi”. When I asked why he wrote: “scott's steinway sounding board would 'ring' like crazy. it was my theory about why his tannoys sounded even mud...
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I no doubt fall into the category of the 70%. My playback has not been as satisfying as I would like. Many of us do not know where to turn when we hit a brick wall with extracting the best results. The default reaction is to look for a piece of equ...
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The best midrange comes from compression drivers, it has that minuteness, transparency and dynamics that no other topology can offer; the main problem with them is that they only cover a very specific mid frequency ran...
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[quote user="Romy the Cat"]
One more tip. The “least dynamic compression positioning” mostly managed by upper bass and bass channels while in the “imaging positioning” the MF and HF channels play more dominating roles. Therefore, if you use a typica...
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One thing I have noticed is that most of the effort for many years has gone to "marketing", and "they" have gotten better at it with the passage of time, at least broadly speaking. At that same time the size of "The Audience" has grown it has also be...
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Are you saying that this behavior is behavior is characteristic for dried out capacitors? I need to admit that I know very little about solid state electronics and I have no idea how it ages. My amplifiers are 40 years old and certainly it would be c...
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Yes, CV, I thought about it myself and I fine that this might be VERY interesting to play with. Unfortunately, or fortunately, I am months away from the position when I will be able to do it. The subject is devilishly interesting however. I think it ...
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The Danley idea - or something quite like it - does look good for LF, but maybe less good for MF and up, I think.Which takes me back to the whole "point" of the imaginary "single driver"...Effing around with mix-n-match "systems" back in the day...
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And you are right that it also has a regulator within the power supply. This is stated within the owner's manual but it would not allow me to copy it. They use rather convoluted language. Maybe this is the result of translation?To quote from the r...
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[quote user="noviygera"] Every time I turn them off and continue listening without them I notice that something good happens to the sound. It cleans up and becomes more engaging. [/quote] I am glad that somebody got in the end HOW to evaluate an acou...
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Allo RomyOk, I managed to get my measurement setup running. Behringer ECM8000/PC soundcard kind of thing.I measured the following tweeters:Focal TLRTAD PT-R9Aurum Cantus G1Fane 5022I don't have an absolute level calibrator and I need to take time to ...
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Vitavox S2 does OK up to 12.5K ("strong, clean and in character") on it’s center but I never use this driver pointed directly to me but rather at good 20 degree off. (I hardly can tolerate any compression driver point directly to me). At my angle the...
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I am glad to hear that I am not the only one who is overwhelmed by compression drivers. I tried the A7s way back when they were current and everyone's favorite, and I tried various modifications with like-minded friends; but I came to the concl...
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The more I conceptualize my view about tweeters the more I like sound of my playback without it. The last night there was a San Francisco broadcast with estimable Tilson Thomas on podium and I was shocked with stunning SFO’s tone. As many times I hea...
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[quote user="Paul S"] The "calm HF" effect is something I have long sought but seldom experienced from repro, and I have blamed the amps as much as the ribbons. Mere HF extension is not enough. Hard to say whether the amp or the rib...
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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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Murat, that's a lot to ask from one driver. I thought that any time the "un-aided" driver craps out or acts weird, it's time to think about a crossover, and/or some sort of "assistance" for that driver. The great thing about horns is, they can passiv...
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I was kind of frustrated with some strange high frequency roll off at my HF and Injection channels. It should not happen. The 9H OPT LL1627 in Injection channels should be good up to 23kHz according to my former tests with a full range Milq and the T...
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[quote user="anthony"]Can you remember what caps
you used in the HF filter? They are certainly not standard values and I
do have a memory of you trialling air caps. [/quote]
I presume you ask about the F amplifier channel. I use air
caps 530pF...
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I would like to pass some observations about my MiniMe progress. At this point it is obvious that the MiniMe project will be a success, even despite the pain of the ass with multi-amping and some other setbacks. The MiniMe will turn out to be a good ...
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Spoke last night with PurePower people and have good news.
First, after the “agonizing research efforts” (satire) the APS have discovered that source of fuzziness that I reported above and claim that they have a very simple fix that would not requir...
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[quote user="Romy the Cat"]Debating the everlasting Leo Tolstoy’s question “How Much Land Does a Man Need?” I wondering how many and what kind PP I would need. I am debating options: to get two more PP200 or one more PP3000. I wonder if anyone used...
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I am finishing us to setup my listening room and I have my PP2000 blowing up sometimes (go to protection bypass mode) when I use powerful SS amp for ULF along with Melquiades and the rest of the systems driver from one single PP2000. So, I guess I wo...
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[quote user="Lx_"] Well, this is consistent with the behavior I have. I can hear electrical devices behind the PP, especially those of the switching PS type: computer screen, laptop charger, DSL box, printer, SAT decoder... Good luck finding electron...
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[quote user="Paul S"]Yes, Bud, I agree that the most common problem for the full-tilt regenerators is that they begin to exhibit various problems in direct proportion to current demands. And this seems to be true even when they are used "below capac...
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And I do not mean this as a criticism.I had for some time an "original" Music Reference RM9, which was made by another well-educated genius, Roger Modjeski. The RM9 was AB PP with adjustable bias and feedback/gain, with 6DJ8 drivers and a ...
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[quote user="Andy Simpson"]Having made my last comment based on what I 'heard' via my laptop speakers, I took the clip to the workshop monitors last night to have a further listen - not to examine the weird processing, but to come to a refreshed idea...
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