Best car subwoofers

Top pick: TROPO-1X12D2 single 12" loaded ported box — a 12-inch sub already mounted in a tuned ported enclosure, so you get deep, loud bass without building a box or matching specs yourself. It's the easiest big step up from stock audio.

Who the others suit:

• Single 12" complete bass package (box, amp, wiring) — the one to buy if you have nothing yet; everything needed in one box.
• TROPO-2X10D4 dual 10" box — more output and a tighter, punchier sound; needs a beefier amp and more trunk space.
• STRATO-12 / TROPO-XL-12 bare 12" subs — for people who already have an amp and want to build their own enclosure.
• TROPO-10 or NVX 10" — smaller cars or modest amps; less deep bass, less space used.
• Pioneer TS-WX140DA — compact powered option for tight spaces and factory systems.

Check your amp's RMS rating and your trunk depth before ordering.