REW soundcard calibration Question

[goldjazz]

Hi all,

 

I'm trying to get Room EQ Wizard setup properly. So I've got a Behrnger ECM8000 mic which is connected to Steinberg UR12 USB interface box which is connected via USB to my computer. I play from my computer to a Musical Fidelity M1 DAC.

 

Ok So REW expects you to calibrate your soundcard, is this necessary when you are using a DAC? Doesn't the soundcard get bypassed and the DAC takes over? Or do I need to include the DAC in the Loop back and calibrate it?

 

Thanks.

[jcn3]

you're actually looking for a mic calibration file for the ecm8000. you should have been provided one or be able to download one from behringer.

[goldjazz]

you're actually looking for a mic calibration file for the ecm8000. you should have been provided one or be able to download one from behringer.

 

Hi. I might be mistaken but it looks like you need to calibrate mic and soundcard. There-s two different sections in preferences.

[jcn3]

Hi. I might be mistaken but it looks like you need to calibrate mic and soundcard. There-s two different sections in preferences.

 

wow, i'll be damned . . . i used a usb mic so didn't read that part closely. looks like they want you to . . . i'll be interested to see to what you come up with.

[goldjazz]

Yeah i only just realised too. So as i u derstand it REW wants you to set up a "loop back". I guess this is so it can compare the input and output to work out the discrepwncy and create a correction ie calibration file. Now i use a dac so if i select the mic as "input" and the dac as "output" will this work? Also there is software called "asio" which jas a loopback option. Also REW cal gives you the option to use asio. Any thoughts on using asio or not?

 

Thanks

[YashN]

So as i u derstand it REW wants you to set up a "loop back". I guess this is so it can compare the input and output to work out the discrepwncy and create a correction ie calibration file.

 

Yes, that's it. To be able to provide you with the most accurate measurements possible, REW allows you to calibrate the measuring gear, and then compensate for some responses.

 

This is saved an then re-used for getting proper measurements or analysis.

[goldjazz]

Yes, that's it. To be able to provide you with the most accurate measurements possible, REW allows you to calibrate the measuring gear, and then compensate for some responses.

 

This is saved an then re-used for getting proper measurements or analysis.

 

So is this measurement done independent of the mic and speakers? It must be right? So wouldn't you want to not be producing any sound for this test? So you would connect the output of the dac to the input of the mic "box". Instead of to the amp and speakers. And you dont connect the moc at all. Does that make sense to you guys?

 

So in my case the output of the dac is rca while the input in the mic box is 3 pin xlr. So i assume i need an rca to 3 pin xlr cable to create the loop?

[goldjazz]

Here's the REW page on the issue. Finally got this working ok.

 

https://www.roomeqwizard.com/help/help_en-GB/html/calsoundcard.html#audioconfig