Dayton Audio PCX12-8 12" Coaxial woofer usage

I need to replace my 12" woofers in my floor standing 3-way speakers. I found these on Parts Express on sale, and they seem really nice. However, they are designed for PA use and don't understand the "coaxial" part as I see no tweeters. I've never used this type of driver before, and it appears to have a threaded hole in the center of the magnet for a "compression driver". I don't even know what that is.

Can I just use them as standard woofers?