Polk/MOMO is built tough and backed by a three year Parts and Labor warranty, the best warranty in the car speaker world
The MM120 features the industry's strongest poly/graphite cone set in its sleek sexy cast aluminum MOMO Arrow basket. This is metal, with rugged pro-grade nickle-plated binding posts and a giant 4lb magnet to blow you away
The high mass MOMO Red ABS dust cap delivers shattering low frequency response
And it's all cooled for high power by a two-inch, four-layer vented voice coil and pole piece, with even more cooling provided by an exclusive integrated rear spider vent
Strengths: Clean realistic bass.
Small sealed enclosure, 0.88 cu ft.
Plays deep and loud.
This sub blended well with my front stage.
I really like the build quality, old school care and attention to detail.
Weaknesses: Sorry I didn't get two of them.
Hard to come by.
Summary: Excellent sub. This is my favorite Polk sub. I tried the DB series but went back to the MOMO, the quality is just that much better with less distortion and higher power handling.
This is a great SQ sub that digs deep and can get loud.