Harmony AudioHA-ML181 Monolith 18" Car Stereo Competition SPL Sub 3500W Dual 1 Ohm Subwoofer

I got my sub a day early, it was double boxed and came with screws. I am impressed with the size of this sub and the quality of its built everything looks solid for the price. I made a sealed box @ 6.25cu' (5.76cu' after displacement) it sounds ok but I'm going to port it after I break it in. I would buy this sub again

Subwoofer is built well, nice and heavy . Have two of them running on a taramps bass 5k at 1 ohm. I feel they can take quite a bit more . But the sound is nice , the enclosure I have them in is 13cubic ft ported with 15” diameter octoport.. tuned to around 32 hz . Overall I’m happy with this purchase

These subs are super underrated i have them on an 8k watt amp and they're laughing at the power. Me that throw each one on per 8k.