The differences lie first in the fact that the PLG57.3 is a 3-way speaker versus the 2-way PLG57.2. Furthermore, the PLG57.3 comes equipped with both a .5” Neodymium magnet dome midrange and a super film tweeter (the PLG57.2 only includes a tweeter). The Pyle Audio PLG57.3 also features custom grills, a hi-temp aluminum voice coil, and non-fatiguing Butyl rubber surrounds designed for enhanced durability. The Pyle Audio PLG57.3 is priced at $58.75, exactly $1.25 greater than its weaker counterpart, the PLG57.2.