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Rectangular black carpeted box with dual subwoofer cutouts

King Boxes

King Boxes 12 inch Dual Sealed Car Subwoofer Enclosure

SKU CH-FX9S-958R7

A dual 12-inch sealed enclosure finished in black carpet with push terminals and a 30 by 13 3/4 by 13 inch MDF build

  • Product typeEnclosures
  • Dual 12-inch sealed design delivers tight, accurate bass response
  • High-quality black carpet finish protects the enclosure and matches interior trim
  • Push-terminal connectors allow quick, secure speaker-wire installation
  • 3/4-inch MDF construction with single-piece front baffle reduces panel resonance
  • Compact 30 × 13¾ × 13 inch footprint fits a wide range of vehicle spaces

Dual 12-inch sealed enclosure

This sealed speaker box houses two 12-inch subwoofers in a single unit. It is built for car-audio enthusiasts who want deeper bass without the complexity of a ported design. The enclosure arrives finished and ready to wire into an existing amplifier system.

Capacity and headroom

The sealed alignment delivers tight, controlled low-frequency response that suits music genres requiring accuracy over maximum output. It handles moderate power levels cleanly but will reach its mechanical limits before a larger ported enclosure would at the same amplifier settings.

Thermals, noise and power draw

The 3/4-inch MDF construction with a 1-inch front baffle resists panel vibration that can colour the sound. High-quality push terminals ensure a secure connection that minimises resistance heating during extended listening sessions. The black carpet covering protects the enclosure from scratches during installation.

How it compares

Measured against everything we stock in Car Subwoofers & Enclosures, at today’s prices. Recalculated every night.

Price $76.99
Cheaper than about 79% of the 268 comparable items (median $185.49).

Specifications

Product
Product typeEnclosures

Questions about this item

Will this dual 12 inch sealed enclosure fit in my trunk alongside the spare tyre?

The box measures 30 inches wide, 13 3/4 inches deep and 13 inches high, so measure your boot floor and hatch clearance to confirm it leaves room for the spare.

How can I check the push terminals are making solid contact after I wire the subs?

Give each speaker wire a firm tug; the high-performance push terminals should hold without slipping, and a quick multimeter check across the terminals will confirm a low-resistance connection.

Does the package include mounting hardware or do I need to buy brackets and screws separately?

The shipment contains only the carpet-covered MDF enclosure with installed push terminals; mounting brackets, screws and speaker wire are not included.

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