Additional factors to account for when calibrating?

[Ricci]

I know that you are supposed to use a cal file for your mic/spl meter to be used and also you are to create a cal file for your sound card. My question is if there are additional pieces in the signal chain why not make the cal file account for them as well? Like the Xenyx mixer, additional cables, and whatever else may be there?

Also has anyone tried to get the FR of their amplifier/ reciever/ EQ unit? I'd like to try to measure the overall response of my signal chain if possible. I'm not sure how I could go about it the best way though.

[salvasol]

Ricci wrote:

I know that you are supposed to use a cal file for your mic/spl meter to be used and also you are to create a cal file for your sound card. My question is if there are additional pieces in the signal chain why not make the cal file account for them as well? Like the Xenyx mixer, additional cables, and whatever else may be there?

Also has anyone tried to get the FR of their amplifier/ reciever/ EQ unit? I'd like to try to measure the overall response of my signal chain if possible. I'm not sure how I could go about it the best way though.

I remember that I saw a post on "How to check the crossover of the AVR" ... but I can't remember how ... I think Sonnie or Brucek posted that

[brucek]

My question is if there are additional pieces in the signal chain why not make the cal file account for them as well? Like the Xenyx mixer, additional cables, and whatever else may be there?

Yes, most members here that use a Xenyx mixer include it in the loopback when running the soundcard calibration routine, so that the soundcard cal file compensates for the mixers response.
That's all that's required. Cables? - they're already included in the soundcard file. What else is there?

brucek

[Ricci]

Well there's nothing else really. I was just checking whether everyone else is including the mixer, in their cal file.

[dguarnaccia]

Another question along these lines, how do you use both the Soundcard calibration file and the SPL meter calibration?

I see in the settings where it uses the Soundcard calibration .cal file based on the instruction, but I can't figure out where to include the .cal file for the SPL meter itself...

Anyone know?

Thanks,

Darren

[brucek]

Read the REW HELP FILES and the REW Connections and Cabling guide.

brucek

[dguarnaccia]

Hmmm...I followed all those instructions, and created the soundcard calibration file, which I used...

I just got confused when I saw additional .cal files for the RS SPL meter and didn't know where / when I was supposed to use those..I'm guessing I don't need it.

[salvasol]

dguarnaccia wrote:

... files for the RS SPL meter and didn't know where / when I was supposed to use those..I'm guessing I don't need it.

Yes you do!!!

If you don't upload those files, your measurement won't be accurate. Those files are used to adjust the frequency rsponse in the bass area ... for example, at 50Hz your SPL will read 63db; but with the files you'll get 68db ... that is because the SPL don't read exactly what it is

Hope this make sense

[Jerm357]

dguarnaccia wrote:

Hmmm...I followed all those instructions, and created the soundcard calibration file, which I used...

I just got confused when I saw additional .cal files for the RS SPL meter and didn't know where / when I was supposed to use those..I'm guessing I don't need it.

When your in REW click Settings,then right at the top on the left there will be a soundcard tab next to that is the Mic/meter tab, Click the Mic/meter tab and right under the Calibration section is where you want to upload the RS meter .cal file.

[brucek]

just got confused when I saw additional .cal files for the RS SPL meter and didn't know where / when I was supposed to use those

Reread this section from the REW HELP FILES.

brucek