drbond
Responses from drbond
| SUT - electrical theory and practical experience For those who don’t mind clicking links, and are interested in reading more, here is the link to the informative, educational page from Rothwell Audio Products, and they do mention use of different materials, such as copper vs silver somewhere on ... | |
| SUT - electrical theory and practical experience As @intactaudio points out, loading is another aspect of the SUT, and this is where, based on my limited reading, things seem to start to get complicated. Here is what Rothwell Audio's website says about transformer loading: "transformer loading... | |
| SUT - electrical theory and practical experience ….but, Rothwell Audio Products explanations also go into further detail in the next section, which would definitely imply caution against SUT use in a current based phono stage, due to geometrically increasing impedance: ”the transformer turns ra... | |
| SUT - electrical theory and practical experience @pindac Yes, Rothwell Audio website seemingly very clearly and concisely explains even the basics of audio, as evinced by the next paragraph on impedance loading of cartridges, which can be applied to any component matching: ”cartridge loading ... | |
| SUT - electrical theory and practical experience One user recommended a particular search, and it supplied the following website, which I found very informative. Here is a copy from the first two paragraphs from a transformer manufacturer, Rothwell Audio Products: “the cartridge operating prin... | |
| SUT - electrical theory and practical experience @holmz Thanks for sharing those details. I don’t know the details of how a FET works, but I’m sure it has its deficiencies, as does the SUT. I think that 0.00003 seconds (1/c) is essentially instantaneous to the human mind and ear….just ask th... | |
| SUT - electrical theory and practical experience @rauliruegas Your latter post about preferring an integrated "phonolinestage" over separate phono and pre-amplifier would also logically favor an integrated pre-amplifier / amplifier over separate components, so I'm not so sure that your ideal p... | |
| SUT - electrical theory and practical experience @rauliruegas Thanks for the detailed response. So, just to clarify, you are most concerned about the bandwidth limitations in a SUT. I could agree with that; however, I'm not certain that actual signal degradation is any better or worse in a t... | |
| SUT - electrical theory and practical experience @rauliruegas In that post that you refer to, you mention: "A SUT is not a passive device because any audio signal passing trhough those transformers makes that the " hundreds " of meters on each transformer react to that signal and starts the d... | |
| SUT - electrical theory and practical experience @rauliruegas You say that "the best SUT is no SUT at all." What structure(s) in your ideal phono stage replaces the gain that the SUT provides, and how is that necessarily better than an SUT? | |
| SUT - electrical theory and practical experience @lewm I was about to ask details about the transimpedance phono stages, such as exactly how the current is converted to voltage, and where / if a load is added, and how it automatically detects how to do the voltage conversion, but maybe that's ... | |
| SUT - electrical theory and practical experience @rauliruegas , Here’s my current assessment, which has been nicely summarized by @intactaudio : basically, the cartridge is naturally developed as a current generator, however for the past decades, phono stages were created to unnaturally transf... | |
| SUT - electrical theory and practical experience It seems like we maybe venturing slightly off topic with respect to SUT and SQ, but perhaps it is related, as SUT are magnetic-electrical devices, as are cartridges, which seems to be primarily magnetic and secondarily electrical devices (if elect... | |
| SUT - electrical theory and practical experience @rauliruegas You quote another post above: “A phono cartridge is a voltage generator (Vs)” To me, that sounds like a premise, and from my very limited knowledge base, it sounds like it could very well be a false premise, as phono cartridges gen... | |
| SUT - electrical theory and practical experience Perhaps this blurb from a manufacturer sums it up more concisely: they say the signal is tranferred "via electromagnetic induction" and creates "power transfer without distortion" Audio transformers are typically composed of copper wire windi... |