Dayton Audio Ultimax 18s

This 18‑inch monster was built purely for brutal, effortless low‑frequency output—thanks to over 2 inches of peak‑to‑peak cone travel, dual 2‑ohm voice coils, a massive 75 mm coil, and an ultra‑rigid composite cone. With a 1000‑watt RMS / 2000‑watt peak rating and a huge 22 mm of linear Xmax, it moves air like a piston the size of a dinner plate. Whether you put it in a giant vented enclosure for earth‑shaking home theater or a sealed box for tight, controlled bass, the UM18‑22 delivers sub‑20 Hz output that can make walls flex and décor relocate itself. Built with dual mirror‑imaged spiders, aluminum shorting rings, and a triple‑stack motor structure, it's engineered for clean, high‑output bass with surprisingly low distortion