LFE can mean "bass shaker", but it's an industry-standard term invented by Dolby that effectively means "between 3 and 120hz", which usually means "subwoofer".

LFE can mean "bass shaker", but it's an industry-standard term invented by Dolby that effectively means "between 3 and 120hz", which usually means "subwoofer". These days crossover points are very configurable. Most bass shakers are rated for use between 20hz and 200hz.