solderdude
Grand Contributor
the bit louder part is probably the 'better sounding' one.
Camera is moving around which doesn't help.
Camera is moving around which doesn't help.
I measure this in every power line product I test including this one:One thing missing on almost all PLC reviews is a measurement of the noise on the on-sitmains being used in the review.
I have measured this in other reviews. Here, I show the electrical output of an audio device:But questions arise: Does AC noise have any affect on DC ripple. If so, how much?
If you watch his YouTube review, he has a machine which can actually produce a far more dirty AC power output than what is coming out of the walls.These tests of audio gear are interesting. Power conditioners continually get dumped upon and given some of the insane prices asked for these devices, the criticism is warranted. FWIW, I've been an audio hobbyist for 50 years, a reviewer for SoundStage! and an audio shop owner in the past.While I haven't heard the Aquarius, I have tried several PLCs over the past 20 years. Currently, I do not use any PLC- just my component plugged into a dedicated outlet. Some PLCs made small improvements, namely lower noise floor, and others had no effect.
One thing missing on almost all PLC reviews is a measurement of the noise on the on-sitmains being used in the review. I've heard obvious improvements in sound during demos at hotels (CES, RMAF), etc. I think the mains at those locations is quite noisy as can be measured with different meters, so sonic improvements seem reasonable. But in a private location with clean power? Probably little to no change.
One of the common objections Amir notes is that AC is converted to DC which should negate any affect a PLC might have and summarily reject any positive effect a PLC might offer. But questions arise: Does AC noise have any affect on DC ripple. If so, how much? Can reduction of AC noise affect the level of DC ripple that might be measured? At what point does DC ripple affect the sonics of a component? I might be convinced if Amir gave a base line measurement of AC noise at the test location as well opening and measuring any DC ripple in the component prior to, and after implementing the PLC. Even then I have to ask whether there is some, yet to be discovered, component to electrical theory that might help settle this debate.
>>I've heard obvious improvements in sound<<These tests of audio gear are interesting. Power conditioners continually get dumped upon and given some of the insane prices asked for these devices, the criticism is warranted. FWIW, I've been an audio hobbyist for 50 years, a reviewer for SoundStage! and an audio shop owner in the past.While I haven't heard the Aquarius, I have tried several PLCs over the past 20 years. Currently, I do not use any PLC- just my component plugged into a dedicated outlet. Some PLCs made small improvements, namely lower noise floor, and others had no effect.
One thing missing on almost all PLC reviews is a measurement of the noise on the on-sitmains being used in the review. I've heard obvious improvements in sound during demos at hotels (CES, RMAF), etc. I think the mains at those locations is quite noisy as can be measured with different meters, so sonic improvements seem reasonable. But in a private location with clean power? Probably little to no change.
One of the common objections Amir notes is that AC is converted to DC which should negate any affect a PLC might have and summarily reject any positive effect a PLC might offer. But questions arise: Does AC noise have any affect on DC ripple. If so, how much? Can reduction of AC noise affect the level of DC ripple that might be measured? At what point does DC ripple affect the sonics of a component? I might be convinced if Amir gave a base line measurement of AC noise at the test location as well opening and measuring any DC ripple in the component prior to, and after implementing the PLC. Even then I have to ask whether there is some, yet to be discovered, component to electrical theory that might help settle this debate.
We can send men to the moon, sequence the human genome and harness the power of the atom but, you are right, there remain undiscovered "components" in electrical theory that cannot be measured and only the audio equipment manufacturers know about.Even then I have to ask whether there is some, yet to be discovered, component to electrical theory that might help settle this debate.
Does AC noise have any affect on DC ripple.
If so, how much?
Can reduction of AC noise affect the level of DC ripple that might be measured?
At what point does DC ripple affect the sonics of a component? I
I think if you learn how AC to DC conversion works you will realise that capacitors are there for the exact reason you are enquiring for.Does AC noise have any affect on DC ripple. If so, how much? Can reduction of AC noise affect the level of DC ripple that might be measured? At what point does DC ripple affect the sonics of a component?
I understand how the conversion works. I am a former low voltage electronics technician. My question however pertains to how much ripple can the capacitors remove, e.g., if the degree of ripple exceeds the capacitors' ability for smoothing the ripple, then how might the sonics be affected? Second- Does the level of noise on the mains contribute to the potential level of ripple. I'm no big proponent of PLCs. Also, Would you please comment on this 2 minute video.I think if you learn how AC to DC conversion works you will realise that capacitors are there for the exact reason you are enquiring for.
Read up about Dr Semmelweis and his challenging current science before making a fool of yourself. 100 years ago, experts like yourself would have laughed at one who proposed the concept of DNA having a factor in epidemiology, so yourself.We can send men to the moon, sequence the human genome and harness the power of the atom but, you are right, there remain undiscovered "components" in electrical theory that cannot be measured and only the audio equipment manufacturers know about.
I am a former low voltage electronics technician.
Would you please comment on this 2 minute video
So, regarding point 2: Am I to assume that the physician running the electrocardiac lab did not know how to do perform these studies until the Shunyata folks showed up? Really???1: It is an advertisement for Shunyata
2: Measuring small signals on a body also includes ground and this can cause substantial error signals that have to be dealt with.
3: I am quite certain the issue in the measurements here are NOT coming from lowering 'noise' on internal DC power rails in the sensitive equipment.