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Asus Rampage V Extreme Owners thread - Page 130

post #1291 of 10650
Quote:
Originally Posted by vmanuelgm View Post


If you say my onkyo a9000r does not use usb power, then you dont know what you say...

To say what I say, I have tried several configs to avoid ground loop, noise and weak 5v...

If you isolate the usb with special isolators, the onkyo wont work because it does not receive 5v.

If using audiophiles usb's in MSI or Gigabyte, and disabling them, the onkyo wont work.

If you use ifi usb purifier, or ifi external power (special for usb), then you have the right choice...

So, if you have special usb's with stable 5V, less noise. If you are able to isolate all the ground loop from a mobo, which is not easy, less noise...

This is my experience. Do you have an onkyo a9000r to say what you say???


1) The Wolfson DAC in your Onkyo unit is NOT USB bus powered

2) The 5V signal is used for handshaking NOT to power the DAC - this is USB protocol.

3) If the DAC needed 5V bus power the optical input would not work as such inputs carry no power for external devices.

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post #1292 of 10650
...
Edited by vmanuelgm - 11/4/15 at 10:45am
post #1293 of 10650
Quote:
Originally Posted by vmanuelgm View Post

1) My onkyo has 2 wolfson dacs, but connected to USB Device (C-Media CM6631) for 192 kHz/32-Bit HD Audio from PC

http://www.cmedia.com.tw/ProductsDetail/page-p/C1Serno-25/C2Serno-27/PSerno-43.html


2) If Onkyo does not need 5v, why is it not detected when disabling usb power in usb's???


3) Optical is optical, and usb is usb. There is special stuff for optical in the onkyo and special stuff for usb. The optical Works different from usb...


I Talked to several electrical engineers hifi experts, and told me not to use usb, because it is very difficult to isolate ground loop...

This will be the last time I respond to you on this:


1) The data is transferred on the D+ and D- lines. The Wolfson DACs do not see the 5V supply from USB

2) Same as above.

3) This is not relevant and has nothing to do with 5V. Ground is ground, 5V is 5V.

-Raja
post #1294 of 10650
...
Edited by vmanuelgm - 11/4/15 at 10:44am
post #1295 of 10650
Quote:
Originally Posted by vmanuelgm View Post

Please see this datasheet, and please tell me where does it say it is usb autopowered...

http://www.eu.onkyo.com/downloads/1/9/8/2/2/ONKYO_datasheet_A-9000R_EN.pdf


Please understand that wolfson dacs are for right lef channels, but does not guide directly the sound from usb. neither optical, because there is special stuff for it (cmedia in case of usb's)...


I repeat, when I dont pass 5v, onkyo usb wont work, how do you explain that??? Optical does work with no power...


The datasheet clearly states the amp has a separate DAC for L/R channels. Two Wolfson DACs are used in mono configuration to separate left and right channels. All inputs that utilize the L/R stereo channels will be routed to the L/R DACs.

The CMedia chipset routes USB/TOSLINK and S/PDIF to the Wolfson DACs and is powered internally within the unit.

The 5V USB bus power it likely utilized for handshaking purposes (USB input presence detection) - not to power any section of the circuitry that is critical to sound playback otherwise none of your other inputs would work without USB bus power connected to the unit..

If you have anything further to say on this please start a separate thread as it is not related to the board.
Edited by Raja@ASUS - 10/14/14 at 5:11am
post #1296 of 10650
Quote:
Originally Posted by vmanuelgm View Post

I repeat, when I dont pass 5v, onkyo usb wont work, how do you explain that??? Optical does work with no power...

I'm guessing that you are either a troll or you just won't listen to the things others have to say ... wink.gif

He (Raja) just answerd you that question a few post above:
Quote:
Originally Posted by Raja@ASUS View Post

2) The 5V signal is used for handshaking NOT to power the DAC - this is USB protocol.

3) If the DAC needed 5V bus power the optical input would not work as such inputs carry no power for external devices.

If you are not happy with the RVE, than its your choice and I guess everyone is fine with that. But please don't try to justify your decision on false (or not thoroughly) understood facts.

PS: No offense, but I also wouldn't mind if you keep the discussion in this thread on its intended topic. Thanks.
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CoolingCoolingCoolingCooling
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post #1297 of 10650
Quote:
Originally Posted by spc980 View Post

drunken.gif

that's looking pretty sick! nice work!thumb.gif
post #1298 of 10650
Quote:
Originally Posted by spc980 View Post



H2O cheers.gif vs. LN2

Great work! thumb.gif

which Waterblock did you use for mainboard?

and those awesome tubes? drool.gif
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post #1299 of 10650
Quote:
Originally Posted by spc980 View Post


H2O cheers.gif vs. LN2

How did you get the "Gforce GTX" logo on the waterblocks? Did you just peel it off of the stock cooler and glue it on? Does it light up?
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post #1300 of 10650
hey guys im a noob so sorry if i ask the wrong questions redface.gif......1.CMD16GX4M4A2666C16 is this ram ok? 2.on battlefeild 4 the game hangs at the load screen or sometimes loads but it gitches by the way it some times does'nt render the buildings or in the gun selection?


Intel Core i7 5930K s2011 v3
Hydro H110
Asus RAMPAGE V EXTREME MoBo
Corsair RM1000 1000W FGold PSU
CMD16GX4M4A2666C16
2x970 gtx
thanks any suggestions welcome and thank for your time:thumb:
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