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Old 10th March 2014, 09:50 AM   #1
diyAudio Member
Join Date: Jun 2012
Location: Gdansk
Default Room EQ Wizard case study

I measured yesterday my speakers using REW v5. I was able to gather alll equipment but I need your help guys with reading the response. What can we see here and what can be done about that to improve the sound? If you need more information or extra measurement let me know.

The frequency response is smoothed to 1/6 octave.

I know that peaks and nulls at low frequency are produced by room modes. I am going to deal with it with multi subwoofer setup. I am not sure what to do with 202 Hz null as my subs wont go that high.

Crossover point at 2200 Hz so it probably explains the huge dip around that frequency.
Attached Images
File Type: jpg both_speakers.jpg (93.6 KB, 93 views)
File Type: jpg both_speakers_decay.jpg (112.2 KB, 87 views)
File Type: jpg both_speakers_waterfall.jpg (251.9 KB, 86 views)
File Type: jpg left_speaker.jpg (90.6 KB, 84 views)
File Type: jpg left_speaker_decay.jpg (136.8 KB, 79 views)
File Type: jpg left_speaker_waterfall.jpg (248.9 KB, 15 views)
File Type: jpg right_speaker.jpg (90.8 KB, 17 views)
File Type: jpg right_speaker_decay.jpg (134.6 KB, 13 views)
File Type: jpg right_speaker_waterfall.jpg (262.3 KB, 8 views)

Last edited by dziemian; 10th March 2014 at 10:06 AM.
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Old 10th March 2014, 09:56 AM   #2
diyAudio Member
Join Date: Jun 2012
Location: Gdansk
Frequency responses not smoothed.
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File Type: jpg both_speakers_not_smoothed.jpg (145.0 KB, 16 views)
File Type: jpg left_speaker_not_smoothed.jpg (140.0 KB, 13 views)
File Type: jpg right_speaker_not_smoothed.jpg (139.7 KB, 8 views)
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Old 10th March 2014, 07:54 PM   #3
tvrgeek is offline tvrgeek  United States
diyAudio Member
Join Date: Dec 2009
Location: Md
OK, no where enough information to help much but here is what I can say:

A big dip at crossover may mean the tweeters are out of phase.
From your plots, I would say your balance mid to tweeter is off. Too much pad on the tweeter.

You don't say anything about where you are measuring. Move the mic a foot and it may be completely different.

The sub must be overpowering! Turn that thing down!

Without seeing the room, we really can't offer much help. Remember, you are measuring the room and the speakers. Everything matters.
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