Not sure if this helps Seth but,
The 'discover deep bass" driver is an 8+8 ohm driver.M&K uses a red connector wire to bring each driver down to an 8 ohm load.If you look at the back of either driver ,you'll see the connector. I have an extra driver sitting in the garage from my refurb.that I'll be using for a DIY project.
I'm not sure on your model,but most M&K subs are rated down to 20 hz(a few down to 16).In room response should bring you down in the "teens".
BTW,the new M&K drivers"super fast bass"(marketing,isnt it wonderful

),are 8 ohm loads with no connector.