Very nice! Better with chimarrão or KayPirinha?
No problem, I am not a typical German 😉
Actually I don't drink Beer, I prefer a good Cabernet Sauvignon and sometimes an old Scotch.
But I also like chimarrão.
Installed the dumpers. Listening now. I'm very pleased!
Very detailed and musical. Bass is very controlled. Treble very clean. Vocals unreal!
It worthed the months of simulation in LTspice.
Very detailed and musical. Bass is very controlled. Treble very clean. Vocals unreal!
It worthed the months of simulation in LTspice.
Amplifier
Could you do some real life THD/IMD tests on your new current dumping amplifier creation?
Could you do some real life THD/IMD tests on your new current dumping amplifier creation?
Could you do some real life THD/IMD tests on your new current dumping amplifier creation?
Will do, as soon time permits.
RMAA measurements
Did some measurements using RMAA and the internal soundcard of my Intel DH77 motherboard.
Power output was set to 1W due to not using an attenuator at the soundcard input.
Did some measurements using RMAA and the internal soundcard of my Intel DH77 motherboard.
Power output was set to 1W due to not using an attenuator at the soundcard input.
Attachments
Looking good ! Heavier load conditions would be interesting to see.
Did some tests with RMAA using 8R resistors as load.
Attachments
Did some tests with RMAA using 8R resistors as load.
Please disregard my last post.
There are problems with the test setup that ruined the measurements.
Will post correct results ASAP.
Regards.
What jumps out to me in the measurements is that the noise level is rather high, often much higher than any distortion.
Why would that be? The data in post # 112 was better.
Jan
Why would that be? The data in post # 112 was better.
Jan
Last edited:
What jumps out to me in the measurements is that the noise level is rather high, often much higher than any distortion.
Why would that be? The data in post # 112 was better.
Jan
I have found the noise source is the soundcard output, about 20mVpp. The output level was adjusted via Windows volume control.
I'll have to insert an attenuator between the soundcard and the amplifier, to keep the soundcard output level always at max.
One year listening to this amplifier and it never ceases to amaze me!
I think I like it more than my two Leach amp!
I think I like it more than my two Leach amp!
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