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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Salas DCG3 preamp (line & headphone)
Salas DCG3 preamp (line & headphone)
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Old 18th March 2019, 12:04 PM   #3711
Oystein is offline Oystein  Netherlands
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Join Date: Jun 2009
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Maybe ist is already discussed here but going through approx. 400 pages is quite a task

How does the Salas SSLV1.3 UltraBib compare to the DCSTB ?

I will need multiple power supplies for other components too so I would prefer to keep it by a single design.

Or does the DCSTB have some benefits for use with DCG3 ?
I will keep the bias current in the DCG3 as low as needed for pre-amp duties only - no headphones ...
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Old 18th March 2019, 12:58 PM   #3712
Oystein is offline Oystein  Netherlands
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I think I have found the answer to my question: (link is to post 3062 from Salas)

Salas DCG3 preamp (line & headphone)
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Old 20th March 2019, 04:53 AM   #3713
shattered_dream is offline shattered_dream  Germany
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Quote:
Originally Posted by savvas View Post
So it's two DCSTB or 8 UBIBs, right ? I don't know if anyone done that. Anyway good luck and do tell us your opinion when you finally have done it
It's two DCSTBs for dual mono balanced dcg3..
We will aee, will take a little bit longer since girlfriend is pregnant...
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Old 26th March 2019, 05:10 AM   #3714
wineds is offline wineds  Australia
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Finally finished my build!
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Old 26th March 2019, 05:21 AM   #3715
steefdebruijn is offline steefdebruijn  Netherlands
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WoW Nice and tidy build!

I like it better with the lights on :-)

What are the green thingies on the left of your front plate?
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Old 26th March 2019, 05:51 AM   #3716
wineds is offline wineds  Australia
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Aqua led pilot lights. Thanks!
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Old 26th March 2019, 09:49 AM   #3717
Salas is offline Salas  Greece
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Salas DCG3 preamp (line & headphone)
Very nice build, exactly planned for floor space use. With what attenuator and other gear it plays with, and how do you like it?
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Old 26th March 2019, 10:48 AM   #3718
wineds is offline wineds  Australia
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Thanks Salas! Its a great design by you. I am using this for attenuation and source selection :

Arduino based LDR volume and source selection controller

The DCG3 then runs into a DIY SONY VFET. My source is a Soekris DAM1021 (raw output) so I needed a bit more gain to drive the VFET.

Speakers are Troels DTQWT.
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Old 26th March 2019, 11:04 AM   #3719
wineds is offline wineds  Australia
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Speakers are 94db. The DIY SONY VFET has only 16db gain. The DAM1021 only puts out about 0.7v from the raw output.
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Old 26th March 2019, 11:06 AM   #3720
Salas is offline Salas  Greece
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Salas DCG3 preamp (line & headphone)
Nice speakers. LDR adds some of its own THD also but many people seem to like LDR.
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