one thing:
only well experienced Greedy Boy should try feeding an amp with 20KHz and shoot for clipping
your 20KHz power graph shows 53Vpp ......means 18V7rms, which is 43W@8R ......... jolly good
Aleph isn't Laboratory Amplifier - not made for that and no need to be used as that
in short - first ask, measure later
only well experienced Greedy Boy should try feeding an amp with 20KHz and shoot for clipping
your 20KHz power graph shows 53Vpp ......means 18V7rms, which is 43W@8R ......... jolly good
Aleph isn't Laboratory Amplifier - not made for that and no need to be used as that
in short - first ask, measure later
Have you looked at the specs?
More: Also Nelson Pass wrote, that the Amplifier would deliver 60Watt@8Ohms and !!!!! 1% Distortion, but it is not stated where this distortion occurs. Find out where the point is with less than .5% Distortion @1khz and then make the same test @ 20Khz or even @ 100KHz again, and you will see the outcome is the real thing, which actually should blow your worries away.
Now you overdrive it into 78Watts Peak and find only about .2% distortion. My Question to you, is it really necessary to improve anything..
On last thing: Class A Amps are more than high fidelity, these are HIGH END FIDELITY amp and with good speakers connected you will not need more than 1.5 Watts in your room, to have it real loud with high quality sound.
This should count more that everything else.
Cheers my friend.. I just hope you will not improve it to the negative side of Quality..
Nelson Pass explicit set 100KHz to - 2 db if you now calculate it to 20Khz then you will see that this is within the spec. and 20K / 100Khz is closer than 1 Khz to 20Khz..
More: Also Nelson Pass wrote, that the Amplifier would deliver 60Watt@8Ohms and !!!!! 1% Distortion, but it is not stated where this distortion occurs. Find out where the point is with less than .5% Distortion @1khz and then make the same test @ 20Khz or even @ 100KHz again, and you will see the outcome is the real thing, which actually should blow your worries away.
Now you overdrive it into 78Watts Peak and find only about .2% distortion. My Question to you, is it really necessary to improve anything..
On last thing: Class A Amps are more than high fidelity, these are HIGH END FIDELITY amp and with good speakers connected you will not need more than 1.5 Watts in your room, to have it real loud with high quality sound.
This should count more that everything else.
Cheers my friend.. I just hope you will not improve it to the negative side of Quality..
thanks for your interesting explanation ...
This is the first Nelson Pass amp I try to make.
I was unsure whether what I showed was a problem or not, so I asked the forum ...
It was a good idea because I am learning so many things
Thanks a lot to everyone
This is the first Nelson Pass amp I try to make.
I was unsure whether what I showed was a problem or not, so I asked the forum ...
It was a good idea because I am learning so many things
Thanks a lot to everyone
@vacuphile, I do not agree with you
Sorry I think you are mistaken.! You can hear the difference very well and latest you will know when the Tweeter is sending out SMOKE SIGNALS.
In the picture it shows a simulation.
1. Sinus 10 Khz@10 volts output and 0.292% Distortion.!
2. Square 10Khz @10 Output and 27.832% Distortion.!
You will hear this as clear as the Amen in the Church after Sundays Church session has finished.,
Just take out your function Gen, a Oscilloscope, Distortion analizer, and Old tweeter which is no need anymore, because it will be distroyed.
No need to Amplify the signal up to 10Voltsp-p just 1 Watt is enough..
Then Open your Ears and listen to it.. And there the Tweeter blows..
Pic 3 & 4 showing the same Example @ 1 Watt RMS
If you need a Video REAL TIME I can make one for you..
Never input Square wave above 100mili Watts into your speakers, it will definatley kill them and before it does this, you will hear that nasty sound of the SQUARE Wave.
Sorry I think you are mistaken.! You can hear the difference very well and latest you will know when the Tweeter is sending out SMOKE SIGNALS.
In the picture it shows a simulation.
1. Sinus 10 Khz@10 volts output and 0.292% Distortion.!
2. Square 10Khz @10 Output and 27.832% Distortion.!
You will hear this as clear as the Amen in the Church after Sundays Church session has finished.,
Just take out your function Gen, a Oscilloscope, Distortion analizer, and Old tweeter which is no need anymore, because it will be distroyed.
No need to Amplify the signal up to 10Voltsp-p just 1 Watt is enough..
Then Open your Ears and listen to it.. And there the Tweeter blows..
Pic 3 & 4 showing the same Example @ 1 Watt RMS
If you need a Video REAL TIME I can make one for you..
Never input Square wave above 100mili Watts into your speakers, it will definatley kill them and before it does this, you will hear that nasty sound of the SQUARE Wave.
