I got this sub runnin on a apsm 1500 @ 2 ohms paired with dbxi 10 in seperate boxes ( both subs are single4ohm) sub is seein 500 rms ..it holds its on ...the cone works a lot harder then the dbxi (polypropelyn vs pressed pulp) and voice coil gets hot but the sub has performed beautifully without a flaw...I even dropped it a couple times accidently before installing...if your looking for something low on the price bt big on the sound this is it...not a lot to look at but it sounds great when given over the recommended wattage rms

This subwoofer has 25mm one way xmax (50.8 mm total), and with 475w rms from the amp, it fills the bottom end nicely. This is the kind of excursion you see on 15's.

It is low sensitivity at 87 db. In the sealed enclosure it starts to get good only at higher volume. It is an entry level SPL subwoofer and requires more amplifier wattage in sealed enclosure. Huge bass from a fairly small cone. My enclosure is .78 cu ft, recommended is 1.0- 1.35 cu ft. I know it would be deeper with more cubes, just don't have the room.

For the money, its a steal. The TNT manual drawings are incomplete. Its true cutout size is 9-1/8" and could be tapered from 9" even. Measure twice cut once! I wasn't about to ruin a 1" baffle, (that 9 5/8" cutout figure is bunk. that's the distance from bolt hole center-to-center).