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-   -   CM-140 Settings and Issues REW (https://www.hometheatershack.com/forums/spl-meters-mic-s-calibration-sound-cards/169482-cm-140-settings-issues-rew.html)

replicant_impulse 06-17-17 12:40 AM

CM-140 Settings and Issues REW
 

I am trying to calibrate 2 UXL18 18" subwoofers in my HT using REW Wizard. I have the Checkmate CM-140 and I am trying to individually test each subwoofer to match 75db then adjust their gain until they are both level matched. My problem is this:
1. What should I set the SPL meter to?
2. I got the C weighted part and the Fast, but what do I set for Levels and Min/Max?
3. Also is it normal to see a 5-6 db swing in my HT room. My amp is loud even after replacing the fans with Gentle Typhoon AP-45 2150 RPM. Could that be creating the problem?

Any help would be greatly appreciated. :nerd2:


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