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Old 19th May 2011, 08:33 PM   #11
miklos is offline miklos  Canada
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Default Positive ground.

Missed the positive ground.
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Last edited by miklos; 19th May 2011 at 08:43 PM.
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Old 23rd May 2011, 04:44 AM   #12
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Testing of the Son of Follower goes on, the reference is a high-end tube 300B SE amp from NEM (Novosibirsk), also integrated amp.
The tube amp needed nearly 200 hours for burning in, while the S of F - only 20 hours. There is no frequency range, which is better performed by the tube amp.
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Last edited by VladimirK; 23rd May 2011 at 04:46 AM.
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Old 24th May 2011, 03:10 AM   #13
miklos is offline miklos  Canada
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Quote:
Originally Posted by VladimirK View Post
Testing of the Son of Follower goes on, the reference is a high-end tube 300B SE amp from NEM (Novosibirsk), also integrated amp.
The tube amp needed nearly 200 hours for burning in, while the S of F - only 20 hours. There is no frequency range, which is better performed by the tube amp.
Looking good.
Seems the 300B amp as big as your Son of Follower.
Why the difference in the burning in times?
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Old 24th May 2011, 04:54 AM   #14
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Originally Posted by miklos View Post
Looking good.
Seems the 300B amp as big as your Son of Follower.
Why the difference in the burning in times?
The 300B amp belongs to the family that got several prises at Las Vegas, High-End cathegory. Its weight is 65kg, and output trafos are big and designed for 4 Ohms load. Also, PS includes vacuum rectifier, big choke and Black Gate caps. Output impedance is 0,6 Ohms.
Long burning-in time, I guess, is usual for trafo-based devices. Capacitors and solder joints are much easier in this respect.
With the follower-like designs, by improving output cap, one can really achieve all that tube SE excellence.
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Old 24th May 2011, 11:31 AM   #15
miklos is offline miklos  Canada
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Very impressive Vladimir. I my self stay away from audio stuff which I can't lift alone.
So my limit would be in the 20, max 25kg range.
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Old 24th May 2011, 11:46 AM   #16
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Very impressive Vladimir. I my self stay away from audio stuff which I can't lift alone.
So my limit would be in the 20, max 25kg range.
Hello, Miklos
This weight, nearly 20kg, is just what I have for the Son of Follower, at this I do not account for the PS trafos, that are external devices. Actually, its weight could be around 12-15kg, with more optimal heatsinks. My heatsinks are overspeced for this application (in this schematics we have 2A x 60V per heatsink, while these heatsinks can do 3,8A x 60V).
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Old 11th June 2011, 02:49 PM   #17
GoranB is offline GoranB  Poland
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Hi Vladimir,

I tried the cap cluster on my amp, now i have 10 X 1500 uF RIFA caps per chanell and 2x33 uF polipropilens. The first impressions are dissapointing. Before, with SPRAGUE 4700uF per chanell sound was much better. Maybe I should give some time to RIFA's ?

I like how your son of follower looks. But i dont like the name you choose for it

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Goran
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Old 11th June 2011, 06:02 PM   #18
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Originally Posted by GoranB View Post
Hi Vladimir,
I tried the cap cluster on my amp, now i have 10 X 1500 uF RIFA caps per chanell and 2x33 uF polipropilens. The first impressions are dissapointing. Before, with SPRAGUE 4700uF per chanell sound was much better. Maybe I should give some time to RIFA's ?
I like how your son of follower looks. But i dont like the name you choose for it
Regards Goran
Hello, Goran
I could only confirm, that Elna Silmic, Elna Cerafine, SamWha WL, both measure at 10kHz (dielectric losses angle) and sound good.
I have not used RIFA, in spite that I bought 4 pcs of them (PEH 169 4700uF 63V) in Singapore and intended to use them, but after doing measuremens decided not to spoil time.
Not forget also, that any new assembled device needs 20 hours of intensive burning-in (I use white noise from FM radio, adjust level for having 6...7V AC voltage at the output).
What name for the amp would you prefer? I simply have not paid attention to this aspect. At least, Son is much better than Death (sometimes used).

Last edited by VladimirK; 11th June 2011 at 06:09 PM.
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Old 11th June 2011, 08:02 PM   #19
GoranB is offline GoranB  Poland
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Quote:
Originally Posted by VladimirK View Post
Hello, Goran
I could only confirm, that Elna Silmic, Elna Cerafine, SamWha WL, both measure at 10kHz (dielectric losses angle) and sound good.
I have not used RIFA, in spite that I bought 4 pcs of them (PEH 169 4700uF 63V) in Singapore and intended to use them, but after doing measuremens decided not to spoil time.
Not forget also, that any new assembled device needs 20 hours of intensive burning-in (I use white noise from FM radio, adjust level for having 6...7V AC voltage at the output).
What name for the amp would you prefer? I simply have not paid attention to this aspect. At least, Son is much better than Death (sometimes used).
Hey Vladimir,

Yes, I think RIFA's need more time to burn in (if they ever will). I can generate white noise from cool edit, but i think wife will kill me after 15 min

Abt name, i would like you use a name of something whats close to You, even written on cirilic, it will be cool, the design is yours.

Regards
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Old 11th June 2011, 08:49 PM   #20
WuYit is offline WuYit  Sweden
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Hi,
what about a name like The Dedicated Follower?
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