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| The general idea is to put some stuff about the Audio-hardware of the Dune BD Prime here:
| | Welcome to discuss whatever you feel is missing or should be clarified on the audio section of the Dune HD and BD players. |
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| ==Overview==
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| The audio section of the BD Prime is relatively simple.
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| 4 parallel stereo DACs make up the audio from signals passed from the main board.
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| ==Hardware==
| | I wonder if I could take it out of Dune and attach to C200 Sigma board. Hardware aside, there would also need to be software components... |
| Signals to DAC-board
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| [[Image:Audio-DAC-Signals_small.JPG|400px|Signals fed from the Main Board]]
| | -lundman |
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| And the Audio DAC-board itself
| | I have no idea, I dont really know popcorn stuff. They dont have HD-audio IIRC. Yesterday I was searching for the audio device on my BD Prime 3.0, couldn't find it :(. I did some work on the audio levels. I found that I had to set the output to -24dB to keep the audio from clipping when playing the test signal WAV-file from RMAA. Still havent managed to get some proper measurements on the performance though ... |
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| [[Image:%E2%80%8EDune_BD_Prime_3_0_Audio_DAC_Topside_small.jpg|400px|General layout]]
| | -Gaston |
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| To my best guess its the Cirrus Logic CS4344C DAC and AZ4580 operational amplifier on this picture
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| [[Image:Dune_BD_Prime_3_0_Audio_DAC_CS4344C-NJM4580M_small.jpg|200px|CS4344C and NJM4580M]]
| | Doesn't matter, I sold my Dune :) |
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| [http://www.cirrus.com/en/products/pro/detail/P1050.html Cirrus Logic website]
| | -lundman |
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| [http://www.cirrus.com/en/pubs/proDatasheet/CS4344-45-46-48_F1.pdf CS4344/45/46/48 Product Data Sheet (pdf)]
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| [http://www.bcdsemi.com/en/ProductCenter/product_infoshow.aspx?id=259 BCD Semiconductors Operational Amplifiers]
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| [http://www.bcdsemi.com/en/ProductCenter/search.aspx?tl=AZ4580 BCD Semiconductors search page, AZ4580]
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| [http://www.bcdsemi.com/upload/datasheet/AZ4580%20D1.9%20081107.pdf AZ4580 Monolithic dual low noise operational amplifier(pdf)]
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| ==Performance==
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| RMAA, other audio measurements?
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| All found so far is a review done by stereo.ru Jan 2010. Page 3/3 in the pdf indicates some graphs of performance. A copy can be downloaded from dune-hd.com.
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| [http://dune-hd.com/uploads/bd_prime_30_stereo_and_video_january_2010.pdf Review of Dune BD Prime 3.0 by stereo.ru Jan 2010 (pdf)]
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| ==Hardware Modifications==
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| Can the current hardware be modified to improve performance
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| Can a replacement be fitted to create a real high end solution?
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| There is a possibility that the Buffalo II will be able to slot right in without any problems.
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| http://www.twistedpearaudio.com/digital/buffalo.aspx
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| Buffalo II is a semi-DIY kit. It is quite expensive but should deliver insane performance.
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| --[[User:Gaston|Gaston]] 00:44, 6 February 2010 (JST)
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Welcome to discuss whatever you feel is missing or should be clarified on the audio section of the Dune HD and BD players.
I wonder if I could take it out of Dune and attach to C200 Sigma board. Hardware aside, there would also need to be software components...
-lundman
I have no idea, I dont really know popcorn stuff. They dont have HD-audio IIRC. Yesterday I was searching for the audio device on my BD Prime 3.0, couldn't find it :(. I did some work on the audio levels. I found that I had to set the output to -24dB to keep the audio from clipping when playing the test signal WAV-file from RMAA. Still havent managed to get some proper measurements on the performance though ...
-Gaston
Doesn't matter, I sold my Dune :)
-lundman