ManualManual 2HiVi M4N 4" Aluminum / Magnesium MidbassA shielded magnet structure allows the HiVi M4N 4" full-range speaker to be incorporated easily into audio/video applications. HighlightsGorgeous magnesium-alloy coneGreat extension for a small driverSimilar sound as the B4N used in the popu..