When utilizing a head unit with a single phono output the signal will almost certainly be switchable between full range and low frequency. Full vary would output all of the sound whereas setting for low frequency solely can be the setting for connecting to a subwoofer.
If the basket has received damage, resembling being bent or cracked, cease the repair course of instantly and do not waste your time. Discover a replacement or buy a new speaker. There are several excellent companies on the web which may provide new speakers, entire new assembled enclosures and speaker kits.