Sound Card Calibration Help

[eye1]

I now have input. There were still settings in the sound card line-in that were not correct. I had to go into the balance and turn off line 1 to 0 and line 2 to 100. At the very end of the measurements I would start to get feed back from the SPL Meter.

Here are new jpg.s to show my success. The first one is using the 50 Hz X-Over and the 2nd is with the 80 Hz X-Over. Both are using Left Right and SW with no sound from the Center Channel. How would I isolate sound to the Center?

Looks to me that the 80 Hz X-Over has fewer nulls and eq able tops. What are your thoughts on this? How does the room look to you on the graphs?

The Third graph is of the SW only at 50Hz and 80Hz

Next I will be on to equalizing. Would there be a typical process for the next steps you could recommend or areas I should focus on?

Thanks again for your patience. I read somewhere in these forums that most issues are operator error in not setting up something correctly.

[brucek]

Yeah, looks like you have it working good now.

How would I isolate sound to the Center?

The receiver should only be used in stereo (or mono) mode. Never use a sound field.
Isolating an REW sweep to a center channel is accomplished by removing a main speaker wire and substituting the center channel speaker wire and turn the balance over to that channel.

Also note that if you're using a Radio Shack meter, the full range measurements aren't accurate above ~ 3KHZ at best. See that peak at 7K - likely the meter causing it. Limit the sweeps to 3KHz. If you want to do accurate full range measurements, you need a better microphone and preamp such as the ECM8000 and XENYX802.

Another note: start all your horizontal axis' on your graphs at 15Hz (and not 2Hz)..

brucek