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risingtenpi  
#1 Posted : Friday, April 3, 2009 6:02:38 AM(UTC)
risingtenpi

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Location: Brisbane, Australia

Hey guys,

Got everything cased up, and feeding from usb>i2s>buff1.0>IVY. I get great sound out of the USB, and the buff goes from automute to lock really quickly when I turn either the buff or USB on. But, no sound comes out of the Buff (or the IVY).

I checked the output of the Buff, and with the volume cranked through the USB, I can hear a faint, high pitched 'white noise' - say around 10Khz, that oscillates (amplitude maybe?) in time with the beat(heard using a set of headphones).

I have the spdif jumper off, I have jumper 1 on '-' and 2-4 on '+'. I get no lock with jumper 1 on '+' or the spdif on.

I am feeding recommended volts to all involved from your reg boards.

any hints?

Michael
Russ White  
#2 Posted : Friday, April 3, 2009 2:36:41 PM(UTC)
Russ White

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Hmm, any pictures you can post?
risingtenpi  
#3 Posted : Friday, April 3, 2009 3:55:33 PM(UTC)
risingtenpi

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risingtenpi  
#4 Posted : Friday, April 3, 2009 5:10:30 PM(UTC)
risingtenpi

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Location: Brisbane, Australia

Further measurements from my DMM, VA and VD, both 6.55V.

When locked onto the opus, and music playing, I get between 1.05 and 1.08V between all buff outputs (V-to G, V+ to G, both chann). That is measured as is pictured above.

Oh, there are more photos uploaded in that album now - so just navigate through...

Michael
risingtenpi  
#5 Posted : Monday, April 6, 2009 4:03:34 AM(UTC)
risingtenpi

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Location: Brisbane, Australia

I buzzed out the I2S connection, to give more information...

Opus => Buff (ver 1.0)
GND => G (is also the braided and foil shielding)
LRCK => D1
SCK => DCK
BCK => D2

Any hints?

Michael

risingtenpi  
#6 Posted : Monday, April 6, 2009 4:04:39 AM(UTC)
risingtenpi

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Location: Brisbane, Australia

On the OPUS, I have DI tied to DO as well...

Michael
Russ White  
#7 Posted : Monday, April 6, 2009 11:57:40 AM(UTC)
Russ White

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risingtenpi wrote:
I buzzed out the I2S connection, to give more information...

Opus => Buff (ver 1.0)
GND => G (is also the braided and foil shielding)
LRCK => D1
SCK => DCK
BCK => D2

Any hints?

Michael



There is your problem. You need to take:

GND -> G
LRCK -> D1
BCK -> DCK
DOUT -> D2

SCK should be left unconnected. It is not used by the Buffalo.

Cheers!
Russ

Edited by user Monday, April 6, 2009 11:59:05 AM(UTC)  | Reason: Not specified

risingtenpi  
#8 Posted : Tuesday, April 7, 2009 12:11:53 AM(UTC)
risingtenpi

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Posts: 11
Location: Brisbane, Australia

Quote:
There is your problem. You need to take:

GND -> G
LRCK -> D1
BCK -> DCK
DOUT -> D2

SCK should be left unconnected. It is not used by the Buffalo.


taking into consideration it is V1.0...

GND -> G
LRCK -> D1
BCK -> D2
DOUT -> DCK

BRILLIANT!!!

sounds so smooth... ooooh, yes. Very happy!!!

Thanks!
Russ White  
#9 Posted : Tuesday, April 7, 2009 4:53:53 AM(UTC)
Russ White

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Very good! Glad to help. I did not notice the Buffalo version, but I am glad you caught it. :)

Cheers!
Russ
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