Description
Alpine PWV‑SB12
The Alpine PWV‑SB12 is a 12″ “BassRev™” powered shallow‑mount subwoofer enclosure with a built‑in Class D amplifier and DSP featuring OPTIM™ Sync technology. It delivers strong low‑end punch (400 W RMS / 800 W peak) from a very compact sealed cabinet with a depth of about 6‑5/8″, making it suitable for tight spaces such as behind seats or in hatchbacks. Additional features include carpeted MDF with a double‑brace internal structure, metal grille protection, high‑ and low‑level input flexibility, wired remote bass level control, low‑pass crossover (50‑200 Hz), phase switch (0/180°), and a shallow sealed design that emphasises flexibility of fit without sacrificing bass performance
Specifications
FEATURES
| Feature | Details |
|---|---|
| Subwoofer | Preloaded 12″ BassRev™ Subwoofer |
| Amplifier & DSP | Built-in 400W RMS Amplifier & DSP with OPTIM™Sync Technology |
| Technology | Alpine Proprietary OPTIM™Sync Algorithm for Dynamic Bass Boost Performance |
| Enclosure | Shallow Sealed Design (6-5/8″ depth) emphasizing low-end punch |
| Fitment | Engineered to compete with full-size enclosures (full-size sub impact) |
| Construction | Carpeted MDF Enclosure with Double Brace Structure |
| Branding | Alpine Embroidered Top |
| Grille | Extended Grille Design |
TECH SPECS
| Spec | Details |
|---|---|
| Enclosure Dimensions | 21” (W) x 13-1/2” (H) x 6-5/8” (D) |
| Enclosure Type | Sealed, shallow profile |
| Enclosure Weight | 32 lbs (14.5 kg) |
| Driver | 12″ BassRev™ Subwoofer, dual 4Ω voice coils (4 Ω + 4 Ω) |
| Power Handling | 400W RMS / 800W Peak |
| Frequency Response | 31Hz – 200Hz |
| Low-Pass Filter | 50–200 Hz, −24 dB/octave (variable) |
| Phase Control | 0° / 180° |
| Inputs | High-level (0.5–10 V) and RCA (0.2–2.0 V) |
| Remote Level Control | Included (0 to −20 dB range) |
| Construction Details | Carpeted MDF cabinet with double-brace structure; extended grille design |
| Branding | Alpine embroidered top |
About The Product
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.
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