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Problems calibrating external sound card

1434 Views 9 Replies 2 Participants Last post by  brucek, 
B
Hello.

I am just getting into REW & bought a BFD recently. My problem is when trying to calibrate my new external USB Sound Blaster x-fi sound card, I get an error saying volume level too low. I have it connected with the right RCA ouput into my receiver, one input to the mic and the other left input into th left output for the feedback loop. I can match the left ch ouput to the input that show on the graph. EAch reads around -3 but the right channel always read much lower, like -60 or so? So when I try and create the calibration file, there are no values in it and it wont save.

What am I doing wrong?


Thanks,
Brandon
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brucek,

Ok my soundcard calib worked! Here are the souncard plots & my sub plot from 10hz-1k.

Does it look ok guys?

Brandon

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I updated the parameters you gave me for next time. I did get some kind of low level error when I was playing around with the identify peaks button. I notice on my graph that the overall plot volume level averages between 40-60db, how do I get this higher/louder so I dont have such low numbers to work with? I had the SPL RS meter calibrated at 75db when I did the sweep as well as the target level you mentioned.

Thoughts?

Thanks,
Brandon
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B
ooops.

Must have missed that step. I will retry tonight & proceed from there.

Thanks for your help!
Brandon
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I tried the settings you mentioned and I still get the following error:

very low signal level

The highest level in the measurement is just -80.8dbFS
this is much lower than it should be. Check the input channel selection, connections, input volume and wave volume/mute.
the highest level should ideally be above -10dbFS.

what am I doing wrong.

I did the level matching & etc.

Brandon
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here is the latest graph. I still struggle to get the SPL meter at a decent level when I try level matching it in REW. Any tricks on doing this?

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