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Hello, when I switch from digital source S\PDIF to I2S, the analog output level drops half compared to S\PDIF.
I use exaU2I and PCM2707. Am I missing something in BII user manual?
Cheers,
Angel
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Are you applying the PCM data to all four data inputs?
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I connected exaU2I to BII according to instruction from exaDevices :
GND -> GND
DVCC -> DVCC
DCK -> DCK
LR -> D1
D.1.2 -> D2
From PCM 2707:
GND -> GND
BCK-> DCK
LRCK -> D1
DATA -> D2
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I take dvcc from 3,3vdc I2C header
the rest should be OK
best
Leif
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What is controlling your DAC? On-board firmware? Or something else?
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On-board firmware. Normal, than "High Bandwidth" Firmware for Buffalo-II.
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On-board firmware. Normal, than "High Bandwidth" Firmware for Buffalo-II.
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Probably reduced volume at the source (computer).
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I use same computer, foobar2000 and J.River players, max volume.
Exa2ui with dedicated asio driver, PCM2707 with wasapi.
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Originally Posted by: Brian Donegan  Correction. BII will work okay with S/PDIF input w/o the firmware, but not with I2S. You will get sound, but will not have the correct input channel mappings set internally. Brian, it is possible to be my problem? Because 2 times, during playback after unlock and lock again output level become normal. Unfortunately I can't reproduce effect ...
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Originally Posted by: Angel Brian, it is possible to be my problem? Because 2 times, during playback after unlock and lock again
output level become normal. Unfortunately I can't reproduce effect ... Hard to say. Why don't you use the firmware chip?
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I do. I used normal, than "High Bandwidth" firmware. And tried without firmware chip.
And the result is the same. I have half analog level with I2S input. When use S\PDIF
input in normal analog level. Seems like ES9018 do not loading code from firmware chip.
How can I check this?
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Russ, Brian where I have to measure to check this with DMM. Or oscilloscope?
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Oscilloscope would be my tool of choice. :)
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Originally Posted by: Russ White Oscilloscope would be my tool of choice. :) ОК, what and where I have to measure?
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I'm still waiting for your help. You're my only hope ... Edited by user 13 years ago
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Without the firmware chip, you will not get the proper channel mappings, which could equate to less output. With the firmware chip, however, this problem would go away.
Besides that, I cannot think of what would cause this problem, other than a different signal level between the S/PDIF and I2S sources (I mean encoded signal, not voltage of the digital signal).
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Brian, I use same computer, same software player, output level 100%. I do use firmware chip, just remove it to check what is situation without chip. With firmware chip or without firmware chip analog output level is same - half compared to S\PDIF input. Proper channel mappings is the first idea, like you say. Same results are written in HIIFIDUINO site: http://hifiduino.wordpre...sabre32-dac-mega-test-2/My question is, can I check does code from firmware chip is loaded in ES9018? Edited by user 13 years ago
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The default mode is 6bit true diff. So I2S would be equal to SPDIF input.
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