Calibration Ruins Impedance Measurements

bangiel

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Joined
Apr 7, 2021
Messages
16
No filtering looks better to me:
45057
 

bangiel

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Thread Starter
Joined
Apr 7, 2021
Messages
16
Ok, the grand finale. I ran 4M, High Filtering during the calibration and measurement steps:

Mesa Traditional 4x12 (Celestion V30s) - no port (afaik)
45059


Mojotone Grand Canyon 4x12 (Celestion V30, Mojotone BV30H) - rectangular port at bottom of front baffle
45060


Mojotone Twin Canyon 2x12 (Celestion V30 and G12H75) - rectangular port at bottom of front baffle
(this one stands out to me because of how many peaks I measured)
45061


Mesa Widebody 1x12 (Celestion C90) - triangular port on the right side of the front baffle (relative to looking at enclosure)
45062


Mesa Widebody 1x12 (Celestion V30) - triangular port on the right side of the front baffle (relative to looking at enclosure)
45063
 

John Mulcahy

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Joined
Apr 3, 2017
Messages
4,843
The multiple peaks in your initial measurements may be due to the different resonances of the 4 drivers in the enclosure, the single driver measurements are more typical of what one would expect as folk are mostly measuring single drivers.
 
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