Focal designs their Access 1 Series loaded sub enclosures to satisfy your appetite for bass. Each enclosure uses 5/8"-thick medium-density fiberboard with internal damping for dynamic bass without shakes and rattles. The advanced flared port design allows Focal to make the box smaller, yet still able to deliver deep, accurate bass that won't flag or falter.

The SB 30 A1 ported box packs the bass firepower of an Access 12" 30 A1 subwoofer, which handles up to 250 watts RMS for strong performance. Focal assembles these boxes by hand so you know they'll provide reliable thump from the first note. Pair this handsome package with a compatible amp and some wiring, then find out how a good sub system can transform your commute.

Product Highlights:

  • ported enclosure with one Access 12" 30 A1 subwoofer
  • 5/8" MDF construction
  • 12" 4-ohm subwoofer
  • power handling: 50-250 watts RMS (peak power: 500 watts)
  • sensitivity: 94 dB
  • frequency response: 40-500 Hz
  • 20-7/8"W x 14-7/16"H x 16-1/16"D1 x 10-3/8"D2
  • warranty: 1 year
  • Our 60-day money-back guarantee

Enclosed Subwoofers 101

An enclosed subwoofer is a box with a subwoofer already installed. The advantage to buying an enclosed sub is that the manufacturer made the sub, then designed and built the box as a perfect match, so you'll get the best possible performance. Every enclosed sub has a maximum RMS power handling rating, so pair it with an amp with a similar RMS power rating to get the best performance.

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Hands-on research

What's in the box?

Download owner's manual

  • Bass-reflex enclosure with 12" loaded subwoofer (metal grille attached)
  • 2 Nylon mounting straps
  • 4 Metal mounting brackets
  • 8 Mounting screws
  • User Manual (Eng/Fre)
  • Template

Features and Specs

Woofer Size (inches) 12
Woofer Material Woven fiberglass
Enclosure Type Ported
Color Gray/Black
Pieces in System 1
Width (inches) 20-7/8
Height (inches) 14-7/16
Depth (inches) 16-1/16
Second Depth (inches) 10-3/8
Connector Type Spring-post
Frequency Response 40-500 Hz
Power Range (Watts RMS) 50-250
Maximum Wattage 500
Sensitivity 94 dB
Impedance 4 ohms
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research


Overview: The FOCAL Access SB30A1 is a bass-reflex subwoofer enclosure with a 12" loaded FOCAL Access 30A1 subwoofer and a flared port. This subwoofer enclosure combines an extended low frequency response with solid bass and high power handling.

Bass Reflex Enclosure: The FOCAL SB30A1 features a bass-reflex enclosure with a front-firing flared port. The flared port is designed to reduce air noise. The enclosure is made of 5/8" MDF and features internal damping material for added rigidity and less vibration noise. The enclosure also features a removable metal grille to protect the woofer's cone. In addition, the subwoofer enclosure utilizes nickel-plated spring-post terminals for easy connection of your speaker wire (up to 10AWG). The FOCAL SB30A1 presents a 4-ohm load at its speaker terminals. The subwoofer enclosure features four rubber feet and comes with a mounting kit which consists of two nylon straps, four metal brackets and eight screws to secure the enclosure in your vehicle.

12" Subwoofer (Access 30A1): The FOCAL Access SB30A1 features a loaded, front-firing 12" SVC 4-ohm FOCAL Access 30A1 subwoofer. The FOCAL Access 30A1 features a 12" braided and watertight, all-weather, woven glass fiber cone for dynamic bass response between 40-500Hz. The woofer also features a butyl rubber surround to promote long life and durability. The Access 30A1 woofer features a 4-layer, 2" voice-coil for higher power handling capabilities up to 250 watt (RMS) and 500 watt (Peak). The Access 30A1's voice-coil cooling system provides optimized reliability with no dynamic compression. The Access 30A1 woofer features a 145mm (5.708") magnet for higher sensitivity up to 94dB (2.83V/1m).

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Crutchfield's car audio experts Ken and Zak present an overview of Focal car audio products. Focal is a leading name in high-quality sound and Crutchfield is proud to have them in our lineup.

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