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Old 4th September 2011, 01:07 PM   #1611
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So this would be a correct circuit for Buffalo II?
Click the image to open in full size.
Try to measure whether Jitter is better or worse with or without pulse transformer.
Also if I have something SPDIF DC.

Thanks Russ.and all.
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Old 4th September 2011, 07:06 PM   #1612
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Yes that would work just fine.
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Old 5th September 2011, 10:58 AM   #1613
mikelm is offline mikelm  England
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Hi Russ / Brian,

I just opened up assembled my buffalo 2 after a huge delay

My current set up is:

USB receiver / MUX receiver / buffalo 2 / IVY 3 /

Powered with Placid & Placid BP and a modified LCDPS ( for MUX )

& volumite

I think I must get the prize for the slowest builder !

The sound is excellent but after conducting tests it is still clear that different sources playing identical tracks do sound different so it seems to me that good quality digital feed will probably further improve things ( as I would describe all of my current digital sources as somewhat basic - PC, DVD player etc ).

As I have adopted PC's as my principal music storage / playing device I was planning to buy an M2tech Evo or similar.

But have been reading in this thread about your plans for a wonderful new asynchronous USB receiver but when I search your site it does not seem to exist yet.

Can you please advise me in the regard. If you are not planning to release one in very near future can you recommend anything ?

cheers

mike

Last edited by mikelm; 5th September 2011 at 11:09 AM.
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Old 5th September 2011, 02:51 PM   #1614
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Default mike...

Yes, like any DAC I have ever used, the source quality does matter (a lot) with the B-II/III, despite the "jitter rejection" topologies incorporated in the ESS 9018.
I would suggest using whatever sources you have right now, and being patient and waiting for the (new) Twisted Pear USB interface. All indications (hints) which have been dropped by Russ White support the idea that the new async USB interface is going to be soemthing special, and worth waiting for.
If you must have a new source in the mean time, I would suggest taking a look at the "digital source" forum here at DIYaudio, there are some alternatives to try there. As this is the TPA forum, discussing competeing products here is somewhat OT.
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Old 6th October 2011, 01:43 PM   #1615
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Hi, I'm riding a regulator to replace the clock trident. My voltage regulator in the cold is of 3.31V/3.32V and in two minutes is stabilized at 3.30 V. IS IT OK?
What is the maximum voltage that supports the clock?

On the other hand, I put blue leds mute and lock instead of the green. Blues consume more. IS OK?

Regards

AL
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Old 6th October 2011, 01:47 PM   #1616
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Your regulator is fine.

I would not use blue LEDs, as the current driving them is supplied by the chip, and I am not sure how much current is can supply without damage. You could add more in-line resistance to reduce the current draw, but how much depends on your LEDs.
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Old 8th October 2011, 10:53 PM   #1617
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Thanks Brian!
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Old 10th October 2011, 07:49 AM   #1618
loreliv is offline loreliv  Italy
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Quote:
Originally Posted by oneoclock View Post
So this would be a correct circuit for Buffalo II?
Click the image to open in full size.
Try to measure whether Jitter is better or worse with or without pulse transformer.
Also if I have something SPDIF DC.

Thanks Russ.and all.


Hello oneoclock
I would like to know if you have Incorporates the pulse transformer and the input capacitor 1uF, what results did you get? transformer that you used?
thanks for the information, greetings Loredana
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Old 13th October 2011, 09:57 PM   #1619
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Original without transformer. J test signal and detail.
Click the image to open in full size.
Click the image to open in full size.

Detail pulse transformer (bel 0554-1220-00-F)
Click the image to open in full size.

Detail pulse transformer Bel and capacitor 1 uF MKP.
Click the image to open in full size.

The measures are very similar. Buffalo II works perfectly for the 3 forms without loss of sync or jumps.

Last edited by oneoclock; 13th October 2011 at 10:00 PM.
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Old 14th October 2011, 06:38 PM   #1620
loreliv is offline loreliv  Italy
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hello Oneoclock
many thanks for the article on the results with pulse transformer
the Pulse Transformer BEL seems to be out .....
you have any advice?
thanks and greetings Loredana
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