Quote:
Originally Posted by jayman  UPDATE: I figured out the 6k dip that shows up in the ARC measurement... It was my preamp! They suggest you use as clean of preamp as you have. No tubes, no color. So, I thought a presonus MP20 was a good candidate, but it turns out that the MP20 has a dip going on at 6k. So, after measuring again with the presonus and my desk out of the way (thought that might be the problem) and still experiencing the problem, I decided to try it through my germanium preamp and wah lah, 6k peak is gone and I'm almost flat from 200 up. |
jayman-
It's actually possible (but not very likely) that your room DOES have a 6k dip in it that's being offset by a 6k peak in your Germanium's response curve, and that the MP20 is flat enough to have revealed the truth.
Without knowing the actual response curve of the pre-amp being used, it's impossible to know for sure that you're correcting your room to "flat" with the ARC system. The ARC mic also has a 1.5dB +/- variability across the spectrum, so it really is important to use as flat a pre as possible with this setup.
André