I follow Kal's logic, but I would lean towards 80 or 50. 120 is way to easy to localize. I feel the lower the better unless you feel like you are missing something. Placement can also effect performance and volume. Placing speakers and sub equidistant to the listening position will ensure proper phase. Near walls and corners will increase volume. Many threads and opinions on this in the forums.
Subwoofer setting
My all Linn 2-channel audio system consists of a pair of Linn Katan speakers which have a frequency response of 60Hz-20kHz +/- 3dB (Aktiv configuration).
I also have a single Linn Sizmik 10.25 powered subwoofer which can be set to cut-off at three different settings: 50Hz, 80Hz or 120Hz (default is 50Hz).
What setting should I be using on my subwoofer? Why?
I also have a single Linn Sizmik 10.25 powered subwoofer which can be set to cut-off at three different settings: 50Hz, 80Hz or 120Hz (default is 50Hz).
What setting should I be using on my subwoofer? Why?