Description
Shallow, Sealed Design
Designed with flexibility in mind, this shallow, sealed enclosure tucks into places bulky boxes won’t—under seats, against trunk walls, or tight hatch areas—preserving your cargo room and install options. Paired with the integrated OPTIM™ Sync algorithm that intelligently enhances low-end performance, PWV-SB12 delivers the impact and authority of a full-size sub from a compact package that won’t steal your trunk.
OPTIM™Sync Technology
The PWV-SB12 uses Alpine’s proprietary bass algorithm OPTIM™Sync, built into the integrated DSP amplifier. It actively applies dynamic bass-boost and pre-EQ to the subwoofer, pushing harder where it counts while staying controlled. The result is larger-than-life low-end and a smoother tone, so this shallow 12"" enclosure hits with full-size sub authority.
- Preloaded 12"" BassRev™ Subwoofer
- Built-in 400W RMS Amplifier & DSP with OPTIM™Sync Technology
- Alpine Proprietary OPTIM™Sync Algorithm for added Dynamic Bass Boost Performance
- Shallow Enclosure for Flexible Fitment (6-5/8"" depth)
- Sealed Design that Emphasizes Low-end Punch and Feel
- Engineered to Compete with Full Size Enclosures (delivers full-size sub impact)
- Carpeted MDF Enclosure w/Double Brace Structure
- Alpine Embroidered Top
- Extended Grille Design
Tech Specs
Enclosure Type: Sealed, shallow profile
Enclosure Weight: 32lbs (14.5kg)
Driver: 12"" BassRev™ Subwoofer, dual 4Ω voice coils (4 Ω + 4 Ω)
Power Handling: 400W RMS / 800W Peak
Frequency Response: 31Hz - 200Hz
Phase Control: 0° / 180°





