I'm guessing that $50 is for one right? not a carton of 2?

Quoting from Freddy

Danny -
252 should be 15", and 222 12" by specs;

M222:fs=71;qts=0.48;qms=3.6;qes=0.55;vas=41.9l;Pe=300w;xmax=6.35mm;Re=4.2;Le=0.43mH;Sd=0.053

M252:fs=51;qts=0.56;qms=4.6;qes=0.64;vas=137.1;Pe=300w;xmax=6.35mm;re=4.2;Le=0.43mH;Sd=0.088

sound like sealed box woofers - might be real nice -certainly good price if you have an application

Freddy