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question on connecting amp to pc

post #1 of 27
Thread Starter 

I have woo audio 2 with rca cable connected from amp to my pc sound card via RCA pre-amp output.

But if I plug in my headphone to the amp to listen to music, no sound come out.

Any idea what's wrong with it?

I also tried connecting to rca inputs but yea no music whatsoever.

Also if I want to connect from PC>DAC>amp>headphone, would I use RCA pre-amp output from pc>dac and rca input from dac>amp?


Edited by fictional - 11/22/13 at 2:09pm
post #2 of 27

Hopefully this will help.


The pre-amp out from your sound card will be an analog signal so no sense in plugging it into a DAC.  A DAC needs a digital signal.

 

You should try to find out if the pre-amp out needs to be selected in the audio software otherwise it will not receive a signal and no amping will be possible.

 

As long as you are using a stereo to RCA Y-Splitter from the pre-amp out you should receive a signal to your amp as long as there is signal going to the pre-amp out on the soundcard.  This is the first hurdle to overcome.

 

I am not sure if there is an input selector on the Woo, but because there are multiple inputs you should check the manual to see if you need to tell the amp which inputs to use.

 

Silly question, but is the Woo powered up as in the tubes warming up and glowing?

 

As far as the DAC question connecting it depends on what DAC you buy.  If it is say a USB DAC you connect the DAC to your PC via USB cable.  It will most likely install some drivers.  Once this is done you should choose it as your audio source in the audio settings so the DAC receives the digital signal not something else.

 

With the DAC now receiving the digital end of things use RCA interconnects to hook up the DAC's output to the Amp's input.  The DAC outputs an analog signal which is not only what the amp needs, but what headphones need too.

 

All of this should be done with the amp off and with the volume at 0%.  Always turn on / off an amp with the volume set to 0%.  Plug in your favorite set of headphones into the headphone jack.  Turn everything on and play some music on your PC.  Set the output volume on the PC to 100% and use the amps volume knob to control the volume when listening to headphones.  If the DAC has a volume knob turn it up to 75%.

 

At this point you should hear music, but depending upon what player you are using you may need to select the new DAC in the preferences.  This is the case with Foobar2000 for example.  Some USB DAC units like USB 2.0 ports better than the more modern USB 3.0 ports.  Try that solution if there appears to be a problem you cannot solve.

 

I hope you get your music up and running.

post #3 of 27
Quote:
Originally Posted by fictional View Post
 

I have woo audio 2 with rca cable connected from amp to my pc sound card via RCA pre-amp output.

But if I plug in my headphone to the amp to listen to music, no sound come out.

Any idea what's wrong with it?

I also tried connecting to rca inputs but yea no music whatsoever.

Also if I want to connect from PC>DAC>amp>headphone, would I use RCA pre-amp output from pc>dac and rca input from dac>amp?

What PC sound card do you have?

post #4 of 27
Thread Starter 

yea the power for the wa2 turns on but i guess i need the dac in order for music to come out of my headphone

post #5 of 27
Thread Starter 

asus xonar essence stx

i put the rca cable to front r and front l and those into audio outputs of wa2


Edited by fictional - 11/22/13 at 2:56pm
post #6 of 27
Quote:
Originally Posted by fictional View Post
 

asus xonar essence stx


When you connect the STX's RCA outputs to the RCA inputs on the Woo Audio 2.

Do you go into the Xonar control panel and set the Audio Output to "Speaker"?

post #7 of 27
Thread Starter 

i do but i get sound from my other headphone since it's plugged into spdif. Should i try to unplug my other headphone then?]

i tried everything like digital audo s/pdif/s/pdif pass through device...etc

post #8 of 27
Quote:
Originally Posted by fictional View Post
 

i do but i get sound from my other headphone since it's plugged into spdif. Should i try to unplug my other headphone then?]

i tried everything like digital audo s/pdif/s/pdif pass through device...etc


Try leaving the S/PDIF output unchecked.

post #9 of 27
Thread Starter 

tried that and picked asus xonar essence stx speaker but still no sound

post #10 of 27
Thread Starter 

Please help me. this is the setup. Did I do soemthing wrong? rca to rca cable

post #11 of 27
Quote:
Originally Posted by fictional View Post
 

Please help me. this is the setup. Did I do something wrong? rca to rca cable


There's you problem, your connecting the RCAs to the Woo Audio 2's RCA analog output jacks.

You should be connecting the cable from the STX's RCA outputs to one of the four RCA inputs on the Woo Audio 2.

post #12 of 27
Thread Starter 

tried that also but no sound..

post #13 of 27
Quote:
Originally Posted by fictional View Post
 

tried that also but no sound..


There are 4 inputs, did you set the knob on the front to match which RCA inputs your are using, on the Woo?

post #14 of 27
Thread Starter 

yes I did. But if I turn the volume up, all I hear is a hissing sound

post #15 of 27
Thread Starter 

there's also a switch which I can choose between hp amp and preamp but I am assuming I choose hp amp?

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