Disclaimer: I am not a pro and I don't know if my data is valid or not.
The measurement gear is a Dayton Audio EMM-6 calibrated microphone with a Behringer U-Phoria UM2 audio interface
I own a pair of Magnat Monitor Supreme 102 speakers, which serve as the surround channels in my home theater system. I know that pma has already published measurements of these on the forum, which is why I thought they would be a good reference point to see how well I measure and how similar my results turn out.
As with my center speaker, I measured in the room from a distance of one meter. I placed the small bookshelf speaker in the middle of the room, using one of my front tower speakers as a stand. I followed Napilopez’s excellent tutorial for the measurement process.
On the horizontal axis, I measured up to 80 degrees—beyond that, I couldn't properly gate the measurements. On the vertical axis, I measured up to ±60 degrees and also performed a near-field measurement to capture low-frequency data.
In VituixCAD, I modeled the front baffle and driver positioning, setting the microphone placement according to the far-field measurements. I then exported the diffraction curve obtained from the software. In REW, I combined the near-field measurement with this diffraction data to apply the baffle step correction. Afterward, I adjusted the amplitude to match the far-field measurement. Once everything was loaded into VituixCAD, I generated the Spinorama.
I’m attaching the horizontal and vertical polar maps. Interestingly, the hole in the vertical polar response at 4.5 kHz seen in pma’s measurements also appears in mine. However, their measurements have much higher resolution—I assume he could use a longer time gate than my 4 ms.
I'd be really curious to compare my results with an NFS-measured speaker someday to see if I’m correctly merging near-field and far-field data. In this area, my results show a different pattern compared to pma's measurements. Maybe one day!
The measurement gear is a Dayton Audio EMM-6 calibrated microphone with a Behringer U-Phoria UM2 audio interface
I own a pair of Magnat Monitor Supreme 102 speakers, which serve as the surround channels in my home theater system. I know that pma has already published measurements of these on the forum, which is why I thought they would be a good reference point to see how well I measure and how similar my results turn out.
As with my center speaker, I measured in the room from a distance of one meter. I placed the small bookshelf speaker in the middle of the room, using one of my front tower speakers as a stand. I followed Napilopez’s excellent tutorial for the measurement process.
On the horizontal axis, I measured up to 80 degrees—beyond that, I couldn't properly gate the measurements. On the vertical axis, I measured up to ±60 degrees and also performed a near-field measurement to capture low-frequency data.
In VituixCAD, I modeled the front baffle and driver positioning, setting the microphone placement according to the far-field measurements. I then exported the diffraction curve obtained from the software. In REW, I combined the near-field measurement with this diffraction data to apply the baffle step correction. Afterward, I adjusted the amplitude to match the far-field measurement. Once everything was loaded into VituixCAD, I generated the Spinorama.
I’m attaching the horizontal and vertical polar maps. Interestingly, the hole in the vertical polar response at 4.5 kHz seen in pma’s measurements also appears in mine. However, their measurements have much higher resolution—I assume he could use a longer time gate than my 4 ms.
I'd be really curious to compare my results with an NFS-measured speaker someday to see if I’m correctly merging near-field and far-field data. In this area, my results show a different pattern compared to pma's measurements. Maybe one day!
