18" Sealed vs Ported Subwoofer SPL / Frequency Response Comparison

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Home Theater Essentials - 18" Sealed vs Ported Subwoofer SPL comparison.
GSG Minimarty vs Denovo sealed. Both with the Parts Express Dayton Ultimax Um18-22 subwoofer.

We used the same source/AVR/amplification to see exactly how the two enclosures impact the performance of this subwoofer. Measurements down with REL and a miniDSP UMIK-1.

UMIK-1 https://amzn.to/2vRax70
Ultimax UM18-22 https://amzn.to/2WCAxyj
MiniDSP 2x4HD https://amzn.to/2UdvO9J