As it was difficult to determine the value vs the performance online from reviews, I bought two of the subwoofers and not only tested them but upgraded the drivers as well. EV Electro Voice ZLX-15P PA tops, Seismic Audio New Madrid 18" Drivers ETX 18SP Subwoofers. Used for South Chicagoland DJanotomus.COM mobile events.
Video Corrections: I meant 8 driver fasteners, not 18
Total swap time was 20 minutes per subwoofer enclosure.
There are three Phillips wood screws on either side of the grill and it comes right off.
There are two square-shaped metal bars, etched into the front of the box which pull right off. No tools needed.
There are then 8 Phillips Machine Screws holding the EV Driver in place.
Last, there are two wires in a push to release configuration (very easy) to disconnect the driver.
Should you pull out the wire harness clip that connects on the amp, it is the left two of the four pins. The right two pins do not produce sound in my test.
Reverse procedure to assemble! Enjoy. I will be making a walkthrough or video with more pictures to help in the very near future so stay tuned! Thank you for watching and or reading!