Hi Demian,
the following question was for Chris, but I would glad to know your opinion.
Why did Cyrus choose to use a circuit topology without global feedback knowing that the measurements would not be superlative?
Indeed this was confirmed by the measurements they have published on their website.
I'm inclined to trust Chris when he said they are smart engineers and they know what they are doing.
Why not use tons of feedback like the "genius at work" syn08?
They would certainly have gotten much better measurements.
Are they stupid?
I don't think.
the following question was for Chris, but I would glad to know your opinion.
Why did Cyrus choose to use a circuit topology without global feedback knowing that the measurements would not be superlative?
Indeed this was confirmed by the measurements they have published on their website.
I'm inclined to trust Chris when he said they are smart engineers and they know what they are doing.
Why not use tons of feedback like the "genius at work" syn08?
They would certainly have gotten much better measurements.
Are they stupid?
I don't think.
What does that have to do with DAC, amp and cables for audio replaying system? When replaying, accuracy is the performance judging criteria.
That is assuming that your measurement accuracy is high enough, and that you are measuring the right thing. Neither of these things is guaranteed.
Andrea,
please tell me, which instrument from your list in #20224 you use as impedance analyzer for components, from 1Hz to 40MHz. True impedance analyzers use a native very good current source. Else, you must use a dedicated code, in a later postprocessing step, to find the impedance from S-parameters results of voltage-source instruments (VNAs). Sorry, it is not clear to me what you have and use in this direction.
Apparently? Citing a "peer reviewed published research on the subject" would help.
Nice. I do not know this instrument. I would probably use it for acoustic measurements only.
For electronics I prefer Bode100 with impedance measurement option, going up to 40MHz (quite necessary this region, to see what is happening in the 2MHz - 10MHz range, where most components (especially the power devices) have issues). Also for testing passives, to be perfect at least until 10MHz and hence make life easier to properly compensate the loops.
The VNA was bought to design oscillators and not amplifiers.
We are not currently designing amplifiers.
When the time comes to design our amplifier we will evaluate the tools we need.
We also are thinking to design a tool ourselves since we dislike current measurements tools (almost the same of the 70s).
For the while I'm here to learn about the instruments currently used from the audio design masters since we are poor hobbyist.
And just to understand I have posted a simple question in post #20262.
Poor Alex, next to today's criminals, he was a breast baby .......
A Clockwork Orange | Masterpiece Trailer | Warner Bros. Entertainment - YouTube
Minute 1.25, revival !!!
Just a note: a VNA is not the core tool for designing oscillators. It can be a better tool for amplifiers, than for oscillators.
At oscillators, its only job is to give you the Q-factor of cavity (if you design cavity-based oscillators). The secondary job is to confirm the pass-band an attenuation characteristics at 50Ohm for various components wou need.
The main tools for oscillators are the Spectrum Analyzer (not a network or a system analyzer) and the oscilloscope in correct band (with Time option and as high FFT capability as possible).
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