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Buffalo III - flexibility without compromise.

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#881
Hi,

I have one great sounding Buffalo II and using spdif input directly connected to my Squeezebox Touch. Squeezebox has not a transformer on the spdif output. I would like to isolate galvanically the coax spdif connection.

How should i do it ? Anybody can give me a hint ?

I suppose one circuit composed of one small transformer, cap and resistor will be enough.

For the new Buffalo III there is one "Single S/PDIF Level Converter Kit" for 29$ and is using the TTL level input. B II has TTL level input.

Any advices ? 🙂
 
#882
Thanks Brian.

I was confusing the S/PDIF Transceiver Module with the Single S/PDIF level converter kit.

On a seperate note, I work in e-commerce. IMHO, put bluntly: Unless the buying process for this kit has been deliberately designed to put off individuals who lack the ability to decide and purchase the necessary items for their requirements; more kits would be sold if the buying process was simplified.
 
#883
sinski said:
Hi,

I have one great sounding Buffalo II and using spdif input directly connected to my Squeezebox Touch. Squeezebox has not a transformer on the spdif output. I would like to isolate galvanically the coax spdif connection.

How should i do it ? Anybody can give me a hint ?

I suppose one circuit composed of one small transformer, cap and resistor will be enough.

For the new Buffalo III there is one "Single S/PDIF Level Converter Kit" for 29$ and is using the TTL level input. B II has TTL level input.

Any advices ? 🙂
Click to expand...

You could use the single level converter with the B-II (connected to D1), and turn off the S/PDIF switch.
 
#884
DSD Output from SACD Transport to Buffalo III DAC

I am going to build a Buffalo III DAC to direct DSD output directly from a SACD Transport to the Buffalo III DAC. However, it appears that you cannot output DSD directly from a SACD and that S/PDIF will not handle this level of data output. Is this the case? Is there another type of connection (i.e., HDMI) that is required?

Thanks

Kris
 
#889
Joshua_G said:
In order to use the full potential of 32bit, the analog section should have SNR of 192dB – as of today, impossible achievement.
Click to expand...

Yikes - theoretical optimal 32bit analog signals and taking full advantage of an existing 32bit DAC are two completely things. 🙂

The fact remains you can only take the very best advantage of this actual (not theoretical) ES9018 32bit DAC using PCM or DSD data.

You can get into with ESS about whether they should call it 32bit or not. Not my battle. 🙂
 
#890
Russ White said:
Yikes - theoretical optimal 32bit analog signals and taking full advantage of an existing 32bit DAC are two completely things. 🙂

The fact remains you can only take the very best advantage of this actual (not theoretical) ES9018 32bit DAC using PCM or DSD data.

You can get into with ESS about whether they should call it 32bit or not. Not my battle. 🙂
Click to expand...

It's no one's battle. My comment intended only to point out that I see no pratical benefit in 32bit over 24bit.
 
#891
GLT/Russ

glt said:
That's the BII wiring configuration:
http://hifiduino.files.wordpress.com/2011/08/biiinputmap.jpg

And then you apply the input remapping switch for BIII
Click to expand...

I now have the B-III board and am setting up the jumpers, please confirm if the following approach will result in the "B-II way" of wiring the B-III, such that I can connect either I2S and DSD (with input re-mapping "on").

JDSD1 and JDSD2 in place, plus, a wire jumper from D2 (or the input pad for JPCM1) to JDSD1. And no jumpers on JPCM 1-3. This would result in:
D1 to data1 and data 5
D2 to data 2, data 4 & data 6

I am pretty sure I understand, but I would like confirmation before soldering. And thanks, for all of your help!
 
#893
TheShaman said:
There are many real/practical benefits in using the 9018 over competing DAC chips currently in production.
And yes there are number games that matter but you have to look deeper than the "32bit" tag and the whole "32bit VS 24bit" debate...
Click to expand...

I'm well aware of the benefit of 9018 over competing DAC chips. It doesn't change the fact that due to the analog section's SNR limitation, there aren't more than 24 effective bits.
 
#896
Found the answer on the Twisted Pair Audio Board:

DVD-1920 DSD -> Buffalo
BCK (Pin 37) -> DCK
DSD1 (Pin 38) -> D1
DSD2 (Pin 39) -> D2
G (Pad CS52) -> G

DVD-1920 PCM -> Buffalo
PBCK (Pin 50) -> DCK
PLRCK (Pin 51) -> D1
PDATA1 (Pin 46) -> D2
G (Pad CS52) -> G
 
#897
When running wires from the BIII to the IVY boards, should I be using shielded cable? I'm not sure if this is important or not. Are there chances of crosstalk/picking up hum from the transformers? Is this also relevant for the lengths from the IVY boards to the physical output jacks that would go on the outside of the case?
 
#899
Takaji said:
When running wires from the BIII to the IVY boards, should I be using shielded cable? I'm not sure if this is important or not. Are there chances of crosstalk/picking up hum from the transformers? Is this also relevant for the lengths from the IVY boards to the physical output jacks that would go on the outside of the case?
Click to expand...

The best solution is to stack using the included mezzanine connectors.
 
#900
Russ...

barrows said:
I now have the B-III board and am setting up the jumpers, please confirm if the following approach will result in the "B-II way" of wiring the B-III, such that I can connect either I2S and DSD (with input re-mapping "on").

JDSD1 and JDSD2 in place, plus, a wire jumper from D2 (or the input pad for JPCM1) to JDSD1. And no jumpers on JPCM 1-3. This would result in:
D1 to data1 and data 5
D2 to data 2, data 4 & data 6

I am pretty sure I understand, but I would like confirmation before soldering. And thanks, for all of your help!
Click to expand...

Can you confirm if I understand the above correctly? I have the B-III on my bench, and am ready to finish it up. Thanks.
 
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