I just had my subwoofers put in today. They are two Alumapro 10'' flat series single 4 ohm voice coil woofers with 350 watt max each. They are powered by a Kenwood class D mono block power amp with 600 watt max output. Alumapro is the company who pioneered the low profile sub. They are handmade and out of Huntley, IL. The amp is nice and small and fits nicely under the drivers seat. The custom box is easily detached and pulled out by a simple pair of banana clips.
Thank you and your welcome. Im really happy how it turned out. They have a really clean and tight sound to them. They go very well with the stock JBL speakers.