1st REW Measurements - Home Theater Forum and Systems - HomeTheaterShack.com

 
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post #1 of 3 Old 12-23-13, 04:47 PM Thread Starter
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1st REW Measurements

Finally got around to getting a UMIK-1 and using REW...

Could definitely use some help interpreting the graphs:
1st REW Measurements-l-front-no-audyssey.jpg (1/6 Octave Smoothing)

1st REW Measurements-subs-no-audyssey.jpg (No Smoothing)

Used the "Getting Started with REW" Step-by-step guide to get to the first measurements; only thing I didn't follow to the T was calibrating SPL Meter to 75dB; I calibrated to ~62dB as my noise floor was relatively low.

I've also attached the .mdat file: REW measure v2.mdat

Any help would be greatly appreciated!

Thanks,
Ryan
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post #2 of 3 Old 12-23-13, 05:12 PM Thread Starter
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Re: 1st REW Measurements

Additional info:
-UMIK-1 calibrated by CSL, used the narrow band response 90 degree calibration file provided by them.
-Using 80Hz Crossover on Denon 4311ci
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post #3 of 3 Old 12-23-13, 05:50 PM
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Re: 1st REW Measurements


Best to use the 0-degree calibration file and measure with the mic pointed at the speaker. The correct calibration file and mic orientation can give a different reading above ~2 kHz compared to 90-degree measurements. If that’s the case, the 0-degree measurement will be the more accurate of the two. For subwoofer measurements, however, the calibration file-type or mic orientation is irrelevant, as bass is omnidirectional.

That said, your response looks very good. With the full range graph, bringing down the peaks at 800 and 250 Hz would probably net an audible improvement. If things sound overall a bit thin or harsh presently, a slight upward tilt in response below 500 Hz would make things sound warmer.

Things look pretty good with the subwoofer graph as well. Reducing the peaks at 70 and 90 Hz a few dB might make the bass sound tighter and more authoritative. Flat all the way out to ~14 Hz, pretty impressive subwoofer!

Regards,
Wayne



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