Yes, it has 0.1 Ohm source resistors and SemiSouths.
It is very difficult at this time to stop listening to music, but I must have to go.
Good Night!
After month of regular vfet amp session he become completly burn-in.
I am amazed by the fact this Sony 2SJ/SK was in Hong-Kong little unknow for long time
and today they are all out of stock, run hot and amplify the music around the world. New life
Thanks and good night Gyuri
Best regards
I have given this name to my amplifier:
Closer to the Music.
closer to the music Vol.4
Folks at Stockfisch Records also knows something for sure.
Closer to the Music.
closer to the music Vol.4
Folks at Stockfisch Records also knows something for sure.
It's like Bach, babbling like a brook, it flows like a river and a fiery flood as fretfulness ocean.
It is just for your mood, soundhappy!
Yes Gyuri
You pointed Caddock MP915 can be interesting to use in R5 & R6 position....
i build this one with fews new to me resistors :
Texas Company Components , Vishays bulk foils...let's give a try.
Do is worst ? Anyway is fun
Detailed DC measurements:
left: right:
T6 to T7 = 1.6260 T6 to T7 = 1.5630
T8 to T9 = -1.6140 T8 to T9 = -1.5680
T7 to T10 = -2.024 T7 to T10 = -2.041
T9 to T12 = 2.063 T9 to T12 = 2.019
T6 to T11 = -6.807 T6 to T11 = -7.025
T8 to T13 = 6.742 T8 to T13 = 6.933
G to T2 = 24.52 G to T2 = 24.52
G to T6 = 29.43 G to T6 = 29.35
G to T8 = -29.32 G to T8 = -29.20
G to T14 = 13.980 G to T14 = 13.970
G to T15 = -14.000 G to T15 = -14.000
G to T17 = -7.399 G to T17 = -7.416
G to T19 = 9.689 G to T19 = 10.076
G to T16 = 8.201 G to T16 = 8.164
G to T20 = -9.205 G to T20 = -8.806
G to T10 = 25.72 G to T10 = 25.72
G to OUT= -1mV G to OUT= 1mV
G to T18 = 1.1720!! G to T18 = -0.860!!
V+ =29.9 V+ =29.9
V- =29.9 V- =29.9
left: right:
T6 to T7 = 1.6260 T6 to T7 = 1.5630
T8 to T9 = -1.6140 T8 to T9 = -1.5680
T7 to T10 = -2.024 T7 to T10 = -2.041
T9 to T12 = 2.063 T9 to T12 = 2.019
T6 to T11 = -6.807 T6 to T11 = -7.025
T8 to T13 = 6.742 T8 to T13 = 6.933
G to T2 = 24.52 G to T2 = 24.52
G to T6 = 29.43 G to T6 = 29.35
G to T8 = -29.32 G to T8 = -29.20
G to T14 = 13.980 G to T14 = 13.970
G to T15 = -14.000 G to T15 = -14.000
G to T17 = -7.399 G to T17 = -7.416
G to T19 = 9.689 G to T19 = 10.076
G to T16 = 8.201 G to T16 = 8.164
G to T20 = -9.205 G to T20 = -8.806
G to T10 = 25.72 G to T10 = 25.72
G to OUT= -1mV G to OUT= 1mV
G to T18 = 1.1720!! G to T18 = -0.860!!
V+ =29.9 V+ =29.9
V- =29.9 V- =29.9
Last edited:
Hi Gyuri,
The way I see it, the main things are to get T18 close to 0, while getting voltage drops across R5 and R6 near 1.5V and drop across R32 around 100mV when your amp
is warmed up. The final values for T16 - T20 I think will depend on your vfets
so I wouldn't worry too much about them.
Cheers,
Dennis
The way I see it, the main things are to get T18 close to 0, while getting voltage drops across R5 and R6 near 1.5V and drop across R32 around 100mV when your amp
is warmed up. The final values for T16 - T20 I think will depend on your vfets
so I wouldn't worry too much about them.
Cheers,
Dennis
My BOSOZ now drives directly Sony VFET amp, rather than my Behringer Super-X Pro CX2310.
So it drives now Sonidos+Mark@Daniel DM-4 AMT on all frequencies.
I'm sure it is a big improvement in sound quality even at bottom frequencies.
Behringer drives 18" Eminences as earlier with a little help of balanced BA3 driven F4 amps.
However it gives me more freedom to chose x-over frequencies and levels on.
So it drives now Sonidos+Mark@Daniel DM-4 AMT on all frequencies.
I'm sure it is a big improvement in sound quality even at bottom frequencies.
Behringer drives 18" Eminences as earlier with a little help of balanced BA3 driven F4 amps.
However it gives me more freedom to chose x-over frequencies and levels on.
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