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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Canuck"]Romy Do you plan on trying the new PurePower Plus and if so when? Maybe they should send you a loaner to try for a decade or so. [/quote] Canuck, I do not know. I am for sure would like to try it and I most probably will. I hav...
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Fully armed with my new knowledge I made today an interesting experiment. I listen Remedios as is this amplifiers running for 35 minutes and then re-listen them again in 2 hours. It was very very convincing, very self-evident but slightly not what I ...
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[quote user="rowuk"] I personally think that appreciation of music and audio are not connected.[/quote]Definitely agree here. I have always appreciated music and was always frustrated in my youth when my piano did not actually sound as "it should ha...
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Romy,It is possible that he is concerned about people in the big Asian country near Japan taking these various ideas and producing knockoffs or even worse upgrades to his basic design. It is revealing that he says "intellectual deprivation" rather th...
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The usual "trick" to "stop inductance" of wire wound resistors is the "old double-wound trick", like those offered by Mills:
http://www.soniccraft.com/index.php/resistors-mills-c-29_53
(and I think it is much the same for capacitors, for that mat...
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[quote user="rowuk"]I am always a bit hesitant to buy into "listening descriptions". I am a musician and am confronted every day with Sound bias - attraction to what we are accustomed to, expectations being confirmed. We are creatures of habit and mo...
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...as anthony points out, but sometimes one can cheat the brain. You mentioned the 100uF caps, here is an interesting film one:
https://www.hificollective.co.uk/catalog/obo080-100uf-400v-obbligato-film-capacitors-p-9107.htm...
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It is not about low voltage buttery power, tube version with 200 pounds power supply, CRL filtration, no-transformer gain or air capacitors. The topology that we might or might not admit to comply with the concept of “acceptable phonostage” is co...
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Well, this concept of Defense Mode is good for superficial explanation (or for selling to ourselves own justifications) and I use to use it in past but I do not use it for a few years as unfortunately it is not what it is. The correction of “the wron...
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The people who use a single driver speaker believe the while their driver move back and forth for it also radiates a problem-free MF and HF. Near the same people believe that if an amp has capacitors with precious metals foil then it not only do ...
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I recently completed some upper bass horns which I'm now enjoying very much. Sadly I lack the skills of someone like Jessie so my efforts are crude in comparison, but they are working well for me which is the main thing.I already had some old frontlo...
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It is always there is something that poisons everything. It is last night in my Boston apartment, a night before the final big move and I was in the middle if heavy packing. Suddenly as lighting stroke me: I was moving my moved audio equipment fr...
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Hello, would it be possible for us to see the diagrams and schematics behind the Zarathustra II in the same spirit as the Melquiades was conceived, noting that the best of ideas are formed with the purest of sentiments?[quote]It is Dima’s and my stro...
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[quote user="Romy the Cat"] Probably the whole thread about the evil electricity might be coming to it’s logical end…[/quote]Today turned the playback and I was surprise with gray and unexpressive bass. “What the hell?”- I asked myself. There wa...
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[quote user="drdna"] I also use the 6SN7-2A3 DHT for my system (except subwoofer). Did you use the Electrocubes for the coupling capacitors? Was the internal wiring regular copper?
The coupling capacitor is critical, of course.
Also, I will say t...
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[quote user="floobydust"]one can identify multiple devices that provide clean power without impacting the sound quality then thru some level of analysis[/quote]Yes, the "analysis" is called listening. :)
[quote user="floobydust"]what effect do tra...
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[quote user="nl"]The 45 is a wonderful tube for running compression drivers.
Many people like carbon comp resistors for the plate load, and paper/oil capacitors for the coupling cap here.
PIOs take some time to break in.
Of course you want...
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Gordon Rankin of Wavelength Audio did a series of one-stage DHTs with a step-up transformer input about ten years ago. I think they were called the Mercury series. By all accounts, they sounded good, but of course had limited gain, not much power and...
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[quote user="drdna"] Honestly for now, the character of the tuner is unobtrusive enough that I notice mostly the problems I have with the preamplifier and the electricity. However, I would be interested about what you had thought at this point to be ...
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I have expressed this attitude before and I think it bites me by my tail again. Everyone tells that electrolytic in POS are bad. Well, I kind of follow this thinking as well but up to the point. The true is that I never was able to beat actively ...
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Romy wrote:"...You are complaining that you have not enough gain in upperbass..."
It is also possible that I'm reacting to a lack of true dedicated mid-bass. As previously mentioned, while the pair of 40Hz horns are under constructon, I co...
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Dear Romy, regarding your efforts to solve variations in mains power supply, there has been an interesting thread on RAT related to the use of toroids as power transformers that morphed into a discussion about the level of DC offset in mains power su...
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Over the course of the last year I have been gently harassing my transformers-savvy surrounding trying to evangelize them into amorphous core. They stubbornly and perhaps stupidly resist. Some of them not…
During the last few months I was tal...
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We, the horn people, know what the compression drivers could do. The controlled dispersion, low distortions, low mechanical dependency, low magnetic anomalies, high efficiency, higher maximum dynamics and many-many more advance are well known. The te...
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[quote user="drdna"]…… people forget that a circuit is a physical collection of dynamically interacting electromagnetic fields…… [/quote]
Isn’t it might a separate VERY large subject?
[quote user="drdna"] The low level resolution is exquisite but t...
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[quote user="mark"] this will start to go down next month if john sends his bidat when i return to canada next week.so you see i am on an interesting parrallel path perhaps. [/quote]
Taking about the parallel paths… My Bidat in Canada as well and I ...
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[quote user="drdna"]What specific objectives did the air caps address in the circuit? You refer to the tempted virtue sound but I am unsure as to the goals that you were trying to achieve with this circuit alteration?[/quote]Adrian,
I what wro...
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Yes, Jessie, but in case you decide to go for DSET, would it be multi-channel Melquiades or anything else, then your consideration for type and topology of the lower bass would greatly dictate requirements for your DSET. If your lower bass channels r...
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It is incredible how stupid sometimes our audio steps are. A few days ago I was complaining that sound of my T350 tweeter suddenly started to bother me but it was no the problem with the tweeter but rather the problem with my own moronity.
A f...
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[quote user="Jim Smith"]Arguably the most humble, yet brilliant designer I have ever met.However, I am very concerned about him on a personal level.Eduardo seems to be wonderfully suited to be a designer.However - IMO - having to run the company, kee...
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