Rockville DK512 Dual 12" Sub and Amp Package vs NVX NPKG212 Dual 12" Loaded Subwoofer Package

Both are dual-12-inch loaded sub packages with a Class D monoblock and a bass remote, so the choice comes down to tuning and amplifier headroom. The Rockville DK512 package is tuned higher at 35Hz and pairs a 700W RMS sub with a 500W RMS amp, so the amp runs out before the subs do; owners call it loud and a good starter set, but one reported a basket failure after about a year. The NVX NPKG212 is tuned lower at 30Hz with a 500W RMS amp matched to 500W RMS subs, a slot port, a subsonic filter and a 1-year manufacturer warranty, which suits someone who wants deeper, better-controlled bass and a properly matched system.

• Choose the DK512 package if you want a higher-tuned box that hits hard on rap and rock, a 4-gauge wiring kit in the box, and a birth sheet showing tested amp power.
• Choose the NVX NPKG212 if you want lower tuning, a slot port, a subsonic filter and an amp rated to match the subs instead of running short of them.