I don't.
Would you care to give the correct values for these outputs?
What would they be for Cd and for DVD audio and for audio on a video DVD?
2 SSassen
2 PMA
It should be "enough" for audio band , so nothing critical.
2 PMA
Unipolar 1Hz square signal does not interesting me, it is nothing realistic for audio signal. And you can use 10x bigger values, if you want reproduce such signal. But what speakers?😱
Sorry to hear that Scott, your input was most appreciated. I was just watching your Burning Amp 2013 presentation on YouTube, interesting stuff!
We havel made a step aside, IMO. The key question is to get smooth and faster step response of the complete amplifier.
Anything good happen when you place a (high current diode across each of the OPS emitter R's?
[I'm in China now on a 7 hour layover waiting for my plane back to san fransisco.]
THx-RNMarsh
[I'm in China now on a 7 hour layover waiting for my plane back to san fransisco.]
THx-RNMarsh
That could be very bad if the diode/Vbe drops are in an unfortunate ratio. Took the new Hinan flight directly from Boston to Beijing 13hr 20min amazing change from the whole day+ of years ago.
Absolutely nothing personal just can't get my head around the dichotomy of having lots of dynamic headroom vs none, after all Hypex brags about 350W into 8 Ohms and 1200W into 2 Ohms. Folks with difficult speaker loads have not chimed in so be it.
Hello Ssassen,
With the way this amplifiers distortion rises when its being driven out of class A operation , can anybody post the spectrum of the the harmonics on a say a 1Khz input .
With the way this amplifiers distortion rises when its being driven out of class A operation , can anybody post the spectrum of the the harmonics on a say a 1Khz input .
You may easily imagine what is happening. However, I love that output stage, it is second to none re class A sound.
SACD as well as music, higher frequencies are less voltage, frequency 10 times, 10 times less volts.
There is no reason to measure at 20kHz, or 10kHz at full voltage. Full voltage ends at 1kHz, further amplitude declines 20 dB / octave
yes, lower voltage -- shockley diodes. Then?
I just got home. I used to go direct from LA to Bangkok. No stop over anywhere. That was really fast/short. They dropped the line however. :-(
Still have flights from many carriers going out of San Fran via various routes.
THx-RNMarsh
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Is this written into the standard?
I suspect not.
It's your bit of fiction, created to con the masses.
OT posts removed.Mr Federmann... please do not use other posters material without acknowledgement or permission, such that it appears as your own work, when it is not.
I will use materiál Inaudible High-Frequency Sounds Affect Brain Activity: Hypersonic Effect
Tsutomu Oohashi , Emi Nishina , Manabu Honda , Yoshiharu Yonekura , Yoshitaka Fuwamoto , Norie Kawai , Tadao Maekawa , Satoshi Nakamura , Hidenao Fukuyama , Hiroshi Shibasaki
Journal of Neurophysiology Published 1 June 2000 Vol. 83 no. 6, 3548-3558 DOI:
material, which he initiated and SACD DVDaudio. It demonstrates that the audio sound is not a constant value.
It is not necessary to measure where the audio sound never occurs.
Many I wrote about it, Paul knows it very well.
That's an interesting article which attempts to prove that frequencies much above 20khz are in fact perceptible.
So unless I'm missing something, 'm not sure how it supports the point you're trying to make ?
So unless I'm missing something, 'm not sure how it supports the point you're trying to make ?
Extremes, class-A is listening exercises very good audio amplifier, it is not no reason to measure in conditions which are not in the real music never occur.
Unrealistic conditions give poor results for most of the critical fidelity sound for someone more measurements.
Unrealistic conditions give poor results for most of the critical fidelity sound for someone more measurements.
?????
Squarewave/Sine performance at full power, max (20K or higher) frequency defines the whole "Operating Surface" capability of the amp. Everything that falls within this surface is expected to perform better than the worst case corner (full power signal at 20K) of this surface.
Alright, lets get this discussion moving in the right direction again. Shown below is the simulated loop gain and phase plot of the original ExtremA. It is clear that with 175 degrees of phase shift and a mere 5 degrees left, there's not whole lot of phase margin.
The proposed component value changes (33pF > 68pF, 1nF > 220pF) as discussed in one of my previous posts shows better results, 160 degrees of total phase shift and the phase margin is now 20 degrees.
So I'm not in the least bit surprised that the original design shows overshoot and ringing when excited with a fast step-response. In the simulator the modified version doesn't show any of the overshoot or ringing when exited with the same fast set-response. From where I am sitting this is due to the improved phase margin (by a factor of 4).
Thoughts?
The proposed component value changes (33pF > 68pF, 1nF > 220pF) as discussed in one of my previous posts shows better results, 160 degrees of total phase shift and the phase margin is now 20 degrees.
So I'm not in the least bit surprised that the original design shows overshoot and ringing when excited with a fast step-response. In the simulator the modified version doesn't show any of the overshoot or ringing when exited with the same fast set-response. From where I am sitting this is due to the improved phase margin (by a factor of 4).
Thoughts?
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