Hello,
you can find very god russian silver mica caps, the maximum value I've found is 0,2uF tollerance 0,3%.
See test caps:
Stanley and Oliver 300B Project
Normally high impedence RIAA id not a god performer.
Ciao
Guglielmo
you can find very god russian silver mica caps, the maximum value I've found is 0,2uF tollerance 0,3%.
See test caps:
Stanley and Oliver 300B Project
Normally high impedence RIAA id not a god performer.
Ciao
Guglielmo
Ciao Gulglielmo, I'm from Cividale but I live in Sydney. What a surprise!
The 300B is really good.
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Please Update the list yourselves when you type here:
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
Guglielmo,
The original version of this phono preampl. use low impedance RIAA but the experience done on Phono End is positive.
Hi-end phono preamplifier
In the Phono End I have got a better sound and no noise using medium impedance RIAA.
In general the low impedance RIAA should have some advantages in terms of noise but in this case we are obliged to use like interstage and RIAA network large value MKP capacitors.
If we increase the impedance of RIAA we can use many kind of products like the best silver mica and Jensen copper film paper in oil.
The pcb can be used for both types of RIAA.
The original version of this phono preampl. use low impedance RIAA but the experience done on Phono End is positive.
Hi-end phono preamplifier
In the Phono End I have got a better sound and no noise using medium impedance RIAA.
In general the low impedance RIAA should have some advantages in terms of noise but in this case we are obliged to use like interstage and RIAA network large value MKP capacitors.
If we increase the impedance of RIAA we can use many kind of products like the best silver mica and Jensen copper film paper in oil.
The pcb can be used for both types of RIAA.
Please Update the list yourselves when you type here:
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
Please Update the list yourselves when you type here:
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
Please Update the list yourselves when you type here:
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
22. Pilsern x2
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
22. Pilsern x2
Hello all,
is this going to happen or if we stay on 30 pcbs it will be to expensive? What is the price in this case?
Regards,
Pred
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2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
22. Pilsern x2
23. 3GGG x1
http://www.diyaudio.com/forums/report.php?p=2119781
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
22. Pilsern x2
23. 3GGG x1
http://www.diyaudio.com/forums/report.php?p=2119781
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Originally Posted by 3GGG
Please Update the list yourselves when you type here:
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
22. Pilsern x2
23. 3GGG x1
24. Presbel x 1
25. Exurbia x 4
Please Update the list yourselves when you type here:
1. apelizzo
2. gioz
3. toufu
4. pred
5. anilva
6. guglielmope x 1
7. wushuliu
8. John Caswell x 2
9. Tangmonster x 2
10. khaho
11. Webby
12. bbe
13. audiodesignguide
14. le´flu x 5
15. vgeorge x1
16. habsrock93 x1
17. eeyore x1
18. Torsken
19. booangler 2
20. vanofmonks 1
21. Loboone x 1
22. Pilsern x2
23. 3GGG x1
24. Presbel x 1
25. Exurbia x 4
Salas is very smart design, but IMO thanks to Depletion mode mosfet it can be simplified. If you don't have Depletion mode mosfet available you may stick to Salas but IMO 13 components around Q1 can be replaced by only 2: one DN2540 and one resistor.
I can see a point of failure in the design: Q4. If Q3 fails to shunt then Q4 boom!
Below is a simplified version of similar concept of Salas function PSU with 1/3 of components and no low voltage floating devices
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