Sands
I recently changed my rears in a 7.1 set up and ran the Yamaha AVR YPAO to check new speakers were in phase, all ok there.
But the Right front 12C  has a W-3 Level Error. L is +7.5dB   C +6.5 dB but  the R is >+10dB
I can run REW to try and find out what is happening, but not good at reading the results.
What would be a good start and end frequency?
Should I do a near field or have the mic in the centre listening position. 
Had the Cat 12C's for a year.
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Mark_Seaton
Sands wrote:
I recently changed my rears in a 7.1 set up and ran the Yamaha AVR YPAO to check new speakers were in phase, all ok there.
But the Right front 12C  has a W-3 Level Error. L is +7.5dB   C +6.5 dB but  the R is >+10dB
I can run REW to try and find out what is happening, but not good at reading the results.
What would be a good start and end frequency?
Should I do a near field or have the mic in the centre listening position. 
Had the Cat 12C's for a year.


Hi Stuart,

Please send music or pink noise from REW to the speaker and press all 3 mute buttons which are CH1, CH2, CH3 which are tweeter, mid, and woofer respectively which are top to bottom.  Engage each one so you are playing only one at a time and confirm each section is functioning.

If the speaker is functioning as expected, there are many acoustic issues which can shift levels by 3dB.  You do want the microphone in the center listening position.  Are the speakers symmetrical to the center listening position?
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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Sands
I ran the Yamaha EQ and sent pink noise testing the Right speaker CH1, CH2, CH3 each CH by it self and all three had sound. 
Now when run EQ the Levels are simular and sound the same where as before the right speaker did sound different to the L and C
So didn't use REW  Don't know why it was Greater Than 10 dB difference before but all good now.[smile] 
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