Car Subwoofers for Sale | Subs, Boxes & Amps

Car Subwoofers, Boxes & Amp Kits

Add real bass to your car audio setup with subwoofers ranging from compact 8" models to heavy-hitting 15" dual subs, plus loaded boxes and amp kits for a plug-and-play upgrade.

Standalone Subwoofers. Single subs and dual voice coil (DVC) models in 8", 10", and 12" sizes from Boss Audio, Hifonics, Pyle, Crunch, and MB Quart — sold individually or in pairs.

Loaded Subwoofer Boxes & Enclosures. Ported and vented sub boxes from Q Power and Hifonics come pre-loaded or ready to load, tuned for stronger bass response than a bare subwoofer alone.

Subwoofer + Amp Kits. Bundles like the Pyramid BNPS102 pair a subwoofer, enclosure, and multi-channel amp in one kit — the simplest way to add bass without matching components yourself.

Shop trusted car audio brands including Boss Audio, Hifonics, Pyle, Pyramid, Crunch, MB Quart, and Q Power, with new markdowns added regularly.

FAQs

What size car subwoofer do I need?

8"–10" subwoofers suit smaller vehicles and drivers who want tighter, more accurate bass; 12"–15" subwoofers deliver deeper, louder bass but need more trunk or cargo space and generally more amplifier power. Check your vehicle's available space before choosing.

Do I need a separate amp for a car subwoofer?

A standalone subwoofer needs a separate amplifier to reach its full output — your factory car stereo usually can't power one on its own. Subwoofer + amp kits (like the Pyramid bundles in this collection) solve this by including a matched amplifier, so nothing extra to buy or match yourself.

What's the difference between a sealed and a ported (vented) subwoofer box?

A sealed box produces tighter, more accurate bass and takes less space; a ported (vented) box produces louder, deeper bass but is larger. Q Power's vented boxes in this collection are built for output-focused setups; check individual listings for enclosure type.

What does single vs. dual voice coil (SVC/DVC) mean?

A single voice coil (SVC) subwoofer has one set of terminals and is simpler to wire. A dual voice coil (DVC) subwoofer has two separate coils, giving more flexible wiring options (series or parallel) to match different amplifier setups. DVC models, common in this collection, are the more versatile choice if you're unsure what you'll pair it with.

Will these subwoofers fit any car?

Standalone subwoofers are sized in inches (8"–15") and need to be matched to an enclosure or custom install space, so they aren't vehicle-specific — fit depends on your available mounting space and box size, not your car's make or model. Loaded boxes list their overall dimensions on the product page so you can check trunk or cargo fit before buying.

Car Subwoofers & Subwoofer Boxes

Car Subwoofers, Boxes & Amp Kits

FAQs