I choose this setup and i take on 6V6 buffer these measurments..
310V, 9.55V on 470Ω with 6.8ΚΩ. (TUBES 6P6S)
im so happy with this 6V6 CF ,smooth,sweet, detailed sound, extented bass.
6V6 line preamp
I am listening everyday my old cds and i hear new voices-sounds.
310V, 9.55V on 470Ω with 6.8ΚΩ. (TUBES 6P6S)
im so happy with this 6V6 CF ,smooth,sweet, detailed sound, extented bass.
6V6 line preamp
I am listening everyday my old cds and i hear new voices-sounds.
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They got much cone area and a waveguide. Those are good things. If they also measure well enough in the room they can be satisfying due to above average sensitivity and power handling. They only look like current hungry enough but proper power amps you got. If you don't have acoustic measurement gear but you can hear bass notes distinct enough and the presence range isn't subdued for vocals so they come through strong but without undue heaviness in their lower registers or harshness in their upper registers while you can still hear cymbals well, that probably means they should be measuring generally balanced in the particular listening space.
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It's time to prepare.
1) Power
350V-0-350V--200mA (340-360V?)
5V--3A
10V--1A
10V--1A
2) Tube 2 x 6V6 (USSR)
3) Tube 5R4GY or 5U4G or GZ34
4) Choke 20H/70R>100WA (do I need it? Can I avoid it?)
5) 2 x SSHV2
...
Plan is to build build cathode follower buffer and maybe later preamp.
PS. I Don't know nothing about tubes so be gentle.
1) Power
350V-0-350V--200mA (340-360V?)
5V--3A
10V--1A
10V--1A
2) Tube 2 x 6V6 (USSR)
3) Tube 5R4GY or 5U4G or GZ34
4) Choke 20H/70R>100WA (do I need it? Can I avoid it?)
5) 2 x SSHV2
...
Plan is to build build cathode follower buffer and maybe later preamp.
PS. I Don't know nothing about tubes so be gentle.
1) The transformer choice depends on the rectifier type's loss. They differ much. I would recommend you select 300-0-300 and a GZ34 which is not only small bottle but small loss too and clear. Can give near 350V DC on low capacitance input with that trafo (on max 60uF will give too much) and it likes a 75 Ohm minimum limiting resistance (Rt) per plate says that tube's manual. See attachment on voltage curves and Rt definition. That one can be supplemented with extra physical resistors if lacking.
4) You could avoid the choke since you will use regulators. Can use a CRC. Something like 10uF 450V plastic - 330R - 470u 450V electrolytic. You should analyze schemes with Duncan's Amps PSUD2 free PSU simulator. Google it. Feed it with your transformer's coils resistance data also. Can measure it when in hand. Add an 80mA current source as load to represent two SSHV2s set at 40mA each. 310V regulated and changing the 5K cathode resistor to 6.8K in the cathode follower can work fine also as in post #3262 with Russian tubes.
4) You could avoid the choke since you will use regulators. Can use a CRC. Something like 10uF 450V plastic - 330R - 470u 450V electrolytic. You should analyze schemes with Duncan's Amps PSUD2 free PSU simulator. Google it. Feed it with your transformer's coils resistance data also. Can measure it when in hand. Add an 80mA current source as load to represent two SSHV2s set at 40mA each. 310V regulated and changing the 5K cathode resistor to 6.8K in the cathode follower can work fine also as in post #3262 with Russian tubes.
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