All that variation is less than a dB.Am I looking at this correct, or is all that variation ok?
That's what I did to get the bottom graph. Can you explain how to test the highs? When I went to try today, the measurements were steadily declining after 200Hz. It looked like the highs were almost not turned on. I tried setting the level to 81dB using the REW sub cal signal to get a 75dB reading from the highs. These are the readings I get when I use the receiver's pink noise test. Then I tried setting the level using the REW speaker cal signal. Not once did the mains maintain the level at which the calibration was set to. Every time, after 200Hz, they just started taking a nose dive all the way out to 20kHz. I did not save the graphs because I thought there was no point since something was incorrect.All that variation is less than a dB.
To test that the soundcard file works and that your card is good, simply connect a cable from line-out to line-in and take a measurement with the newly created soundcard cal file loaded in REW. It will return a flat line............
No, that's a test of the loopback cable without the soundcard cal file loaded.That's what I did to get the bottom graph.
Huh???Does having the loopback always connected effect the testing of the highs?
What I don't understand is everything works fine for the sub. The highs just seem to drop off almost 25dB compared to the <200Hz frequencies.No, that's a test of the loopback cable without the soundcard cal file loaded.
Are you sure you created the soundcard file on the right channel with the cable on the right channel and then saved that file and did the test measurement on the right channel. The left channel is never used, and you do not check the box that says "Use left channel as calibration reference"..
Can you tell me what you are trying to measure and what frequency range you're talking about.What I don't understand is everything works fine for the sub. The highs just seem to drop off almost 25dB compared to the <200Hz frequencies
Under the "Target Settings" button on the left side of the REW screen, change the "Speaker type" from SUBWOOFER to FULL RANGE. Then go to the "Graph Limits" icon at the top right of the screen and change the Right axis limit from 200 to 20,000. You should be good to go then.Can you explain how to test the highs? When I went to try today, the measurements were steadily declining after 200Hz.
Well, I don't know about that. I'm just trying to establish what sort of problem you have. It looks like an equalizer setting is turned on somewhere (in the soundcard, in the receiver). Did you go through all the soundcard settings and be sure all soundfields and mixers and EQ and boost etc are shut off?That should help.