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Old 25th December 2011, 03:49 PM   #871
Salas is online now Salas  Greece
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Fine. Enjoy, & Merry Xmas.
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Old 25th December 2011, 09:01 PM   #872
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by Franz Gysi View Post
Correction...

I am totally convinced now after listening to several albums (Virgil Fox Big Organ, direct to disc cut using a John Curl mixer; Mozart; Pink Floyd and right now Fairground Attraction):

My simplistic RIAA beats the Audio Alchemy DDE 3.0 DAC now by worlds, analog compared to digital reproduction.

Better bass, analog mids, absolutely no listening fatigue.

Thanks Salas!

Franz
Hi Franz

You will be amazed if you increase current to 300mA. (You need heatsinks)
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Old 28th December 2011, 02:06 PM   #873
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Originally Posted by Salas View Post
Fine. Enjoy, & Merry Xmas.

Happy Holidays to you and family!

One question regarding your shunt regulator, I need a bipolar supply (+/- 3.6), can I just use two positive regulators using a virtual ground in the middle ?
does this solution regulate well for both polarities? any issue?

Of course, each regulator is feed with a dedicated trafo and bridge..

Thanks !
regards
Valeriano
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Old 28th December 2011, 02:10 PM   #874
Salas is online now Salas  Greece
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Thanks, same to you too. No issues.
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Old 28th December 2011, 02:35 PM   #875
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Thanks, same to you too. No issues.

very nice.. thanks!
Valeriano
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Old 28th December 2011, 09:10 PM   #876
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by Valeriano View Post
I need a bipolar supply (+/- 3.6), can I just use two positive regulators using a virtual ground in the middle ?
Use a dual secondary transformer. Build two completely separate rectifier/smoothing caps/+ve regulators.
You end up with two isolated supplies.
Just connect these independent supplies in series.

You can also use two -ve regulators, if you wish.
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Old 1st January 2012, 10:16 AM   #877
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Happy New Year to everyone. I hope this will be the year your audio dreams come true; on the other hand what's the point of that if there is nothing left to build!

I would like some feedback on the possibility of putting some large caps between the SSLV regs and the front ends of the BA-2 and BA-3. Is this possible with the shunt design and if so what value caps would I need? The idea is to 'hide' the shunt regs from the front ends.
Chris
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Old 1st January 2012, 10:23 AM   #878
Salas is online now Salas  Greece
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Happy new year Chris.

It will slow down the regs a lot by decreasing the open loop gain bandwidth. A bad thing.
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Old 1st January 2012, 04:25 PM   #879
RCruz is offline RCruz  Switzerland
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Quote:
Originally Posted by Backbones View Post
Happy New Year to everyone. I hope this will be the year your audio dreams come true; on the other hand what's the point of that if there is nothing left to build!

I would like some feedback on the possibility of putting some large caps between the SSLV regs and the front ends of the BA-2 and BA-3. Is this possible with the shunt design and if so what value caps would I need? The idea is to 'hide' the shunt regs from the front ends.
Chris
Hi Chris

Why do you want to "hide" the shunts ?
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Old 2nd January 2012, 02:58 PM   #880
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Hi,
My friend told me to remove any electrolytic capacitor from the the power supply line if it was supply by a shunt regulator. He said shunt don't like large capacitance at the supply end. Is it true?
Thanks.

-coolhead
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