I have a question regarding the PCB of the input stage. Not sure if this belongs here or on the builders thread. Still, here it goes:
The schematic lists IN connected to R1, then C1 that should be connected to R2.
While measuring “continuity” in my PCB I usually check my solder joints ensuring, for example, that the IN and R1 show continuity, and that C1 and R2 do the same.
In the PCB, IN actually goes through C1 first and THEN through R1, so there is no direct connection from In to R1, nor C1 or R2.
Is the schematic and the PCB a little different? Does it matter at all?
Thanks, sorry if this is an obvious question.
Thanks,
Rafa.
The schematic lists IN connected to R1, then C1 that should be connected to R2.
While measuring “continuity” in my PCB I usually check my solder joints ensuring, for example, that the IN and R1 show continuity, and that C1 and R2 do the same.
In the PCB, IN actually goes through C1 first and THEN through R1, so there is no direct connection from In to R1, nor C1 or R2.
Is the schematic and the PCB a little different? Does it matter at all?
Thanks, sorry if this is an obvious question.
Thanks,
Rafa.
In the other thread, Papa pointed out that the N channel boards were nearing completion. That was nearly a week ago, so I imagine they're wrapping that up now.
Hi Pass ,
No chance to get during the VFET lottery , hope to own the Vfet amp , I have a lot of 2SK82.
when is the part 2 sales ?
Thanks
Ang
No chance to get during the VFET lottery , hope to own the Vfet amp , I have a lot of 2SK82.
when is the part 2 sales ?
Thanks
Ang
Now is the winter of our discontent made glorious summer by sunny skies
and celebration of my 20 years on this forum, not to mention recent
vaccinations...
I present the DIY Sony VFET pt 1, detailing the design for the P channel
amplifier version using up the last of the Sony 2SJ28 VFETs, to be followed
by part 2, using up the 2SK82's.
diyAudio will be offering a limited quantity of complete kits of both versions,
so watch for the announcement in the store.
Later there will also be offerings for those who have these and the other
Sony VFETs already, and also other FET devices.
Further reading and discussion:
Father of my friend has tested play Vfet kit with his speakers
(ribbon drivers for mid's and high´s with large classic woofer)
well he uses 200Watt's AB balanced amplifiers normally.
Drive this setup with only 10Watt's Single-Ended at his power maximum so ~2% of distortion
was an example of the hard condition and how do not use this triode amplifier. Was funny experiment.
In the other audio system configuration with class A CD Player and Decware Zen tube preamplifier
and 12" 95dB wide range speakers we get loud low distortion sound and the enjoyement
with music raffinement this Vfet amplifier have potential.
Conclusion : Give the best optimal condition if you can to this moderate power amp.
Champagne and caviar taste better if is cold
Cheers and thanks to Mr. Pass
(ribbon drivers for mid's and high´s with large classic woofer)
well he uses 200Watt's AB balanced amplifiers normally.
Drive this setup with only 10Watt's Single-Ended at his power maximum so ~2% of distortion
was an example of the hard condition and how do not use this triode amplifier. Was funny experiment.
In the other audio system configuration with class A CD Player and Decware Zen tube preamplifier
and 12" 95dB wide range speakers we get loud low distortion sound and the enjoyement
with music raffinement this Vfet amplifier have potential.
Conclusion : Give the best optimal condition if you can to this moderate power amp.
Champagne and caviar taste better if is cold
Cheers and thanks to Mr. PassAttachments
