Dave: I have used earlier Pyles (MH1560) in bass reflex speakers, and they worked just fine. Boxplot (and I will send you a plot I ran on these three) looks good, too. The 1188's are about 96db, and the woofers you list at 97.5 db SPL, you are only talking 1.5 db difference... hardly worth worrying about.I just ran the 1578 specs thru BoxPlot for my brother, and with a 5 cft ported cabinet, F3=52 hz, two 3" dia x 3.2" long ports. With 8 cft you can get down to about 45 hz.
The 15128, in a 5.14 cft box, F3=44hz, 2 ports 3" dia x 1.61" L. The 96.6 db SPL should match the 1188 well.