CM6631 usb audio interface .... any good ? - Page 7 - diyAudio
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Old 15th November 2012, 10:25 AM   #61
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Excellent - didn't know about that. The C will do up to 25Mbs. Nice.

Need to test it to be sure it's a benefit, but the adum4160 definitely is, so I hope this will be too.

Last edited by KlipschKid; 15th November 2012 at 10:28 AM.
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Old 19th November 2012, 08:22 AM   #62
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Quote:
Originally Posted by KlipschKid View Post
Hi,

I thought I'd add some updates about the one I've bought.

I found the ASIO driver (downloaded through the Ebay ad) only works for I2S, not spdif, and again, no 88 or 176.


cheers
Hi, I saw that you modded the pcb and made a coaxial digital out using also a pulse transformer; but in an older posting of yours you said that this driver enables only I2S and not SPDIF on the pcb; so my queston is, why have you even bothered to add SPDIF out if the driver doesn't support it?
also, have you tried using ASIO in Foobar for example?
is this board really supporting ASIO drivers?

thanks
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Old 19th November 2012, 08:43 AM   #63
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Quote:
Originally Posted by luxury54 View Post
Hi, I saw that you modded the pcb and made a coaxial digital out using also a pulse transformer; but in an older posting of yours you said that this driver enables only I2S and not SPDIF on the pcb; so my queston is, why have you even bothered to add SPDIF out if the driver doesn't support it?
also, have you tried using ASIO in Foobar for example?
is this board really supporting ASIO drivers?

thanks
I use Foobar and either the asio driver or wasapi component. The first time I tried the spdif with asio, it didn't work, so I used wasapi, but this weekend spdif worked through the asio driver too. I have no idea why, probably user error ;-)

I am currently using it with a new dac I got on Taobao - a dual ad1955 384khz asrc dac.

USB SPDIF PCM2706˫AD1955 384kHz ASRC Ƶ DAC ׼-Ա

As you can see, I removed the usb socket from the CM6631 and filtered the power input, as above post 46. I haven't got around to fitting BNCs etc.

Click the image to open in full size.

Sorry the photo is blurred (forgot to stop down for more dof) but it's just a quick show and tell.

Last edited by KlipschKid; 19th November 2012 at 08:52 AM.
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Old 19th November 2012, 02:09 PM   #64
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thanks for your answer and for the picture - what a cool dac you have there
but how do you switch between ASIO and WASAPI? you have to uninstall one driver and put the other one instead?
I saw the ASIO driver download link, but where can be found the wasapi one?
also, have you tried the ASUS firmware for essence one?
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Old 20th November 2012, 12:29 AM   #65
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First download wasapi here (for win7 and vista):

foobar2000: Components Repository - WASAPI output support

after installing it, go to Foobar's file_preferences_playback_output and select the Device from the drop down at the top of the box. It should show wasapi devices as well as DS.

For asio, again install the asio driver (and connect cm6631) and go to file_preferences_playback_output_asio virtual devices and click on add new. You should get "asio for c-media device". After that, click on it and then click on edit, to make sure you have the channels set up, bit depth, and latency.

Then you should be ready to switch between ds, wasapi and asio. You might need to go into windows sound control panel and edit the c-media device so it accepts all frequencies and can also be given priority (for wasapi to work).

There's quite a lot of help pages about this - google is your friend if you get stuck.

cheers
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Old 20th November 2012, 11:27 AM   #66
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thanks for all your kind explanation and sorry for bothering that much but I needed to decide which board I will buy cause there are already a few options around, but all of them have their ups and downs and none of them being mature enough to satisfy all the needs alone, without adding to it recklockers,Buffers, FIFOs, etc.
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Old 21st November 2012, 12:44 PM   #67
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No worries.

BTW, the adum3440 looks like a better part for isolation - 150mb/s - less propogation delay -so that's another sample to order and try....
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Old 27th November 2012, 12:52 PM   #68
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for those who received the board from the seller with ASUS firmware (so that you have only SPDIF enabled without capability to use I2S) here is the firmware which you could update on the device:

Need to be flashed by WINXP only

http://www.nutsaudio.com/driver/CM6631_Firmware.zip

and after that you can install C-Media ASIO driver from here (for all Win)

http://www.nutsaudio.com/driver/CM6631_Driver.zip
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Old 27th November 2012, 01:37 PM   #69
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who doesn't need the I2S and outputs to DAC board only via SPDIF and wants to have all the sample rates in one bundle (including 88 khz and 176 khz) might try to update their generic CM6631 with ASUS essence one firmware + driver from here :

ASUS - Multimedia- ASUS Xonar Essence One

(just need to select the OS and there you go)
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Old 27th November 2012, 02:24 PM   #70
anbello is offline anbello  Italy
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thanks a lot luxury
i was searching just for that

ciao
andrea
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