LC instead of RC for the RIAA-curve. It sounds more open and "live-like" in my tube designs. I never realized a 10K version without hum problems but the 600 ohm network is working fine.
I have the Tango and the Korean version - with nickel cores - of it on hand and I prefer the Korean version which is distributed by Acoustic Dimension in the Netherlands.
Next is to make my own version....
Hi Salas,
what's the last version of your phono stage? I have thorrens TT TD-125 with a DL103. Thank you! Maxpou
what's the last version of your phono stage? I have thorrens TT TD-125 with a DL103. Thank you! Maxpou
Hi Salas,
i have many 2SK170BL.
2X= 7.74mA idss
2X= 8.61mA idss
2X= 8.48mA idss
2X= 8.68mA idss
2X= 10.85mA idss
2X= 8.72mA idss
and i will buy soon other.
but it's possible to post a schematic?
Thank's Maxpou
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Did you ever try this setup Salas? I am preparing to build and wondering whether 4 vs. 2 might be the way to go. Thanks
They are enough. I just checked out the schematic that Merlin will make for using his double jfet chips with 10.5m average, and its OK for 8.5mA-8.7mA pairs in your stash if I changed some resistor values. So here it is for you, and I remind its brother reg not to search back. Please implement the regs with remote sensing, all of you. Its worthwhile.
Attachments
Hi Salas,
thank you for your schematic it's very appreciated. I have some questions for you.
1- What is the color of LEDs used in the PS?
2- It's very necessery to match Q1 and Q7?
thank you! Maxpou
thank you for your schematic it's very appreciated. I have some questions for you.
1- What is the color of LEDs used in the PS?
2- It's very necessery to match Q1 and Q7?
thank you! Maxpou
Salas,
Have you a good high voltage regulator to use for this project ?
http://www.diyaudio.com/forums/grou...preamplifier-andrea-ciuffoli.html#post2090930
Have you a good high voltage regulator to use for this project ?
http://www.diyaudio.com/forums/grou...preamplifier-andrea-ciuffoli.html#post2090930
I have the simpler simplistic. Has its own thread in power supplies. I see from the photos in your link, its already there.
Snowing all day, internet has gone till now, AC electricity going off, going on every half hour, all living in Europe😡
One channel LED's lit & voltage between GND & Q3 (BC550C) ok with 7.2V🙂
The other channel LED's lit but voltage between GND & Q3 (BC550C) is 7.86V😕?
Can I use the NJFET RIAA or I have to wait until get 7-7.3V?
One channel LED's lit & voltage between GND & Q3 (BC550C) ok with 7.2V🙂
The other channel LED's lit but voltage between GND & Q3 (BC550C) is 7.86V😕?
Can I use the NJFET RIAA or I have to wait until get 7-7.3V?
You can. Still near. Just find 1-2 LED that are low to exchange and drop down the happier side, in the next days. For to have excellent first stage voltage match.
It's really strange, I have matched the LED's in both channels with the same voltage across: 7.25V?
Yes but the two Jfet CCS for LEDs may be producing different currents or the LEDs behave differently at this current level. In the end, when everything works OK, I will guide you on how to match the output levels for both channels by using a test record and your DVM. That is what really matters. Is it playing music yet?