What exactly happens, freq.-wise, when you plug one or two ports on a SVS 25-31PC+? (1 Viewer)

[MingL]

In room responses will vary from room to room, but lower tune modes should still be apparent in the same room, shouldn't it?



In this 16-46+ in-room response, the lower port tuning did take a huge hit in the SPLs overall, although a bit more extension gain. 12hz is probably too extreme low to go, but 20hz deep should be a good aim to enjoy all the deep bass.

 

[John Pine]

Good info, thx Ralph. I wonder what percentage of 25-31+ & 20-39+ owners have a port blocked?

Ming, if my wife came home and found a 16-46+ in the corner I'd probably be sleeping on the couch. But, as your graph shows, it's low-end extension is incredible.

 

[MingL]

SVS's port tuning is actually a great feature, despite it cutting SPL levels.

Was just looking thru some of my old measurements.

This is a THD measurement of about 90dBC.