Will require an external +/-15V DC power supply.
All parts available from Mouser
except the TKD main potentiometer.
There are switches that allow to choose between standard mode and Vinyltrak mode. And between "with diamond buffer" and without (I don't know the reason for that extra circuitry - I bypassed it myself).
Hi JB, Very nice job; the pictures look really good.Hey!
I built it into a nice box.
I'd be happy to share gerbers and bom with you.
You can send the gerbers to JLCPCB that will be very cheap.
I'm not using it in 'Vinyltrak' mode, just regular RIAA but using the pseudo, open loop, JFET input.
Runs every day on my system.
Let me know.
jb
Will post some pictures.
Cheers
Bob
no time to do it right yet!Jb,
Thanks for your offer and pictures! Great!
Why not use in vinyltrak mode?
Hi Bob,Hi JB, Very nice job; the pictures look really good.
Cheers
Bob
thank you!
May I ask you the reason for the diamond buffer when it is going straight to an opamp input?
Many thanks,
jb
Hi,
It is all optionnal : you can bypass it or not.
Same for the diamond buffer: you can have it in the pass or not.
Using configuration switches. You may want to hard wire the configuration you want (these are switches I had in the lab : I don't have a part number fo it).
The assembly drawing (PDF) should make clear how to configure the switches.
Matching transistors is not required: the LSK489 does the important job there itself.
Don't hesitate if you have mre questions,
jb
It is all optionnal : you can bypass it or not.
Same for the diamond buffer: you can have it in the pass or not.
Using configuration switches. You may want to hard wire the configuration you want (these are switches I had in the lab : I don't have a part number fo it).
The assembly drawing (PDF) should make clear how to configure the switches.
Matching transistors is not required: the LSK489 does the important job there itself.
Don't hesitate if you have mre questions,
jb
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