Hi,

I have an HSU VTF-3 MK3 subwoofer. There are physical settings (knobs) on the sub and I'm not sure what to set them at. Please advice.

Volume: I have the volume set half way. Should I set it to max or could that hurt it?

Phase:
0 Degree or
180 Degree.
It is set to 0.

Bass Extension:
1 port open or with turbo 18Hz
2 ports open with no turbo 25Hz
I have it set to 2 ports open with no turbo since I don't have the turbo attachment.

Cross Over Frequency:
30Hz - 90 Hz
I have it set to 90 Hz

Cross Over
Out
In
I have it set to IN

Thanks,
Danny