Toroidal transformers contain the field almost entirely, E-cores can induce hum into nearby wire loops. Maybe it's just the wholesome reminds-us-of-our-parent's-table-radios sound of hum?
There are certan things that do comfort us with familiarity and remembering.
A scent like my grandfathers workshop or a taste
like something good your grandmother would cook.
Sound would be the same, I have some old Tube ham radio gear here
that brings back the sound of yesteryear when I listen to them.
A scent like my grandfathers workshop or a taste
like something good your grandmother would cook.
Sound would be the same, I have some old Tube ham radio gear here
that brings back the sound of yesteryear when I listen to them.
You guys are really in the dark about power transformers. Of course, Jan is correct. We have known and worked with these transformer differences for decades. That is what makes a successful designer, someone who works with details.
I prefer Rcore if I can. It does have some residual flux leakage and this can force us to extra shield and orient the transformer, sometimes in an unconventional way to get the hum within acceptable limits. I, like Jan, usually use toroids for high power amps. It is just too expensive to not do so, but I would prefer to use Rcore there if I could.
I prefer Rcore if I can. It does have some residual flux leakage and this can force us to extra shield and orient the transformer, sometimes in an unconventional way to get the hum within acceptable limits. I, like Jan, usually use toroids for high power amps. It is just too expensive to not do so, but I would prefer to use Rcore there if I could.
I was wondering the same thing, I'm starting to believe that
it's JC who does not understand most of what is discussed.
it's JC who does not understand most of what is discussed.
Save it, John. I was a "successful designer", too, for decades at a major contractor designing mostly military and govt agency electronics. Attention to details is important, determining which are real and not some anomaly or gut-feeling is more important.
Hey, a quick question.
Are there any products that lyricise its ability to improve sound quality through extensive use of lead? Say to shroud an interconnect, power cable, speaker wire and so forth?
Do not ask me about the science of such a proposal. The "concept" just came to me one weak moment whilst being entertained in this thread.
Perhaps a nice lead sheet incorporated in a power amplifier can raise the weight and hence perception of sound quality? Doesn't heavy amps automatically sound better than "fly-weights"? I imagine my back would think so.
What about some 5 cm diameter 22 kg 1 meter interconnect. How about a power cable with 20 or even 30 centimeter diameter width. A mere 350 kg for 20 dia and 1 meter. I can only imagine the improvement it will generate. That's how good it will be.
By the way, some 10 cm tall lead pads, to use underneath the speakers for vibration control must be a great product? Perhaps the floor would have to be reinforced. Is this any price to pay for magically better sound?
Lead pads under and over your beloved subwoofer. The possibilities are endless.
Just to be clear, apart from the first question, the rest was an attempt at excessive irony and sarcasm.
ikek.
Are there any products that lyricise its ability to improve sound quality through extensive use of lead? Say to shroud an interconnect, power cable, speaker wire and so forth?
Do not ask me about the science of such a proposal. The "concept" just came to me one weak moment whilst being entertained in this thread.
Perhaps a nice lead sheet incorporated in a power amplifier can raise the weight and hence perception of sound quality? Doesn't heavy amps automatically sound better than "fly-weights"? I imagine my back would think so.
What about some 5 cm diameter 22 kg 1 meter interconnect. How about a power cable with 20 or even 30 centimeter diameter width. A mere 350 kg for 20 dia and 1 meter. I can only imagine the improvement it will generate. That's how good it will be.
By the way, some 10 cm tall lead pads, to use underneath the speakers for vibration control must be a great product? Perhaps the floor would have to be reinforced. Is this any price to pay for magically better sound?
Lead pads under and over your beloved subwoofer. The possibilities are endless.
Just to be clear, apart from the first question, the rest was an attempt at excessive irony and sarcasm.
ikek.
.... and when you have wooden parquet floor, then amplifiers work so good, that you can shut circit breakers
😀
For the record, we have looked into toroid power transformers for the last 40 years or more. They at first seemed to be the 'answer' for hum minimization, and relative efficiency. We first overlooked their 'downside' of enhanced coupling of high frequencies through them due to the nature of their construction (in and out windings virtually on top of each other) and like so many people here, presumed that the AC power source was relatively clean, except for a few harmonics of the fundamental frequency. However, this is not the case. There is a great deal of AC mains garbage up to many MHz generated by local sources, such as electric stoves, motors, etc. This should NOT be passed through the transformer if it is at all possible to minimize it. The best way, that we have found is to use either specially designed E-I transformers (more like isolation transformers than just power transformers) and put them in a separate enclosure, away from the audio circuits, or try for Rcore transformers, that appear to have the best compromise between E-I and toroid configurations.
Now how can you get an 'intuitive' understanding for the difference between E-I or Rcore, and toroid power transformers? Simple: Just measure the capacitance between an input and an output winding of comparable power transformers to note the degree of capacitive coupling between the input and the output windings of the transformers. Go for it, you might be surprised. Of course you could do other measurements, like frequency response, but that takes more effort and does not show the internal cause of the problem.
Now how can you get an 'intuitive' understanding for the difference between E-I or Rcore, and toroid power transformers? Simple: Just measure the capacitance between an input and an output winding of comparable power transformers to note the degree of capacitive coupling between the input and the output windings of the transformers. Go for it, you might be surprised. Of course you could do other measurements, like frequency response, but that takes more effort and does not show the internal cause of the problem.
@venusfly, Benchmark Media DAC-3 uses a high frequency switching power supply, and whatever kind of transformer they happen to be using at the moment. By the time the DAC ever sees it's DC voltages, the power is very clean. And it's passed though a bunch of stuff besides one transformer. At that point, you may as well ask what type of generator was used at the power plant, hydroelectric or coal. Basically, it doesn't matter.
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Seriously, I said what it sounded like to me. Not in comparison to some original, compared to my memory of what bit-crushing sounds like. There are free bit-crusher vst plugins if anyone wants to take a listen to the general effect.
I just said how I know that. If I took any commercial music recording and added tons of delays and reverbs to it, anyone could tell it no longer sounded like a commercial release because of all the echo.
Same for bit-crushing, which has it's own particular sound. Try it yourself if you want to see if you can recognize it.
Same for bit-crushing, which has it's own particular sound. Try it yourself if you want to see if you can recognize it.
I was just wanting to separate the signal manipulation from the original. Not cast aspersions.
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