- Nov 4, 2003
If you have your sub tuned to 25Hz, from what I gather about ported subs, anything below 25Hz will cause the speaker to be "unloaded" -- IOW, it no longer has the enclosure to damp speaker movement. Additionally, as I understand it, this can cause speaker damage to put frequencies under the port tuning through the speaker. Yet I read all the time about people doing sweeps down to 16Hz with their SVS (and other) subs. What am I missing?