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Alpine PWV-SB12

400W Peak (200W RMS) Loaded Single 12" Sealed Amplified Shallow Enclosure with OPTIM Sync

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• 12" Amplified Loaded Subwoofer System
• Shallow enclosure for flexible fitment
• OPTIM Sync technology for dynamic bass boost algorithm
• 400 watts RMS
• Built-In Class D Amplifier

Learn more about the pwvsb12
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Description


Alpine brand icon

Authorized dealer


Alpine PWV-SB12


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.

Clean, Sturdy, Loud

Built for daily use, the PWV-SB12’s carpeted MDF cabinet and double-brace structure stay solid and rattle-free, even when you turn it up. An extended grille shields the woofer from kicks, pets, and sliding cargo, while the Alpine-embroidered top keeps the install looking premium. Shallow and compact, it installs cleanly, feels rock-solid, and keeps performance front and center.

Factory-Friendly Integration

The PWV-SB12 connects seamlessly to most factory or aftermarket systems. Easy, clearly marked controls make initial tuning fast, and the included wired remote puts bass level at your fingertips while driving. You keep the clean, stock look and everyday convenience, while your music gets the punch and depth your door speakers can’t deliver.


Product Features:

  • Single 12" Sealed Loaded Subwoofer Enclosure with Built-In Amplifier
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Final Impedance: 2-ohm
  • Built-in Class D amplifier
  • Sealed Shallow Square/Rectangle enclosure
  • Comes preloaded with 12" BassRev subwoofer
  • Alpine proprietary OPTIM Sync algorithm for added dynamic bass boost
  • Engineered to compete with full size enclosures
  • Enclosure Dimensions: 21" L x 6-5/8" W x 13-1/2" H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Features:

  • 12" Subwoofer
  • Polypropylene-Mica Subwoofer Cone
  • H.E.D.G.E. Rubber Subwoofer Surround
  • Ferrite Magnet Motor Structure
  • BASSREV Series
  • Extended subwoofer grille design
  • Frequency Response: 31 - 200 Hz

Amplifier Features:

  • Class D Monoblock Amplifier
  • Remote level control included (0 - 20dB range)
  • Phase Selector Adjustment: 0 - 180 degree
  • Low-Pass Crossover Frequency: 50 - 200 Hz
  • RCA Preamp Output: No
  • Input sensitivity: 0.2 - 2.0 volts
  • Fuse Rating: 40A x 1 

Enclosure Features:

  • 12" Sealed Enclosure
  • Preloaded with single 12" BassRev subwoofer
  • Shallow enclosure for flexible fitment with 5" mounting depth
  • Sealed design that emphasizes low-end punch and feel
  • Built with sturdy MDF with a double brace structure
  • Embroidered with Alpine logo for a bold contrast
  • Box Finish: Black Carpet

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Specifications & Details


Series
Series
BASSREV Series
Amplifier Specifications
Amplifier Class
D
Number of Channels
1 - Mono
Maximum Input Gauge Size
10 AWG
Speaker Level Inputs
Yes
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 200 Hz
Low-Level Input Sensitivity
0.2 - 2.0 volts
Remote bass/level controller
Yes
Fuse Rating
40A x 1 
CEA-2031 Compliant
No
Subwoofer Specifications
Subwoofer Size
12"
RMS Power Handling
400 watts
Total RMS Power Handling
400 watts
Peak Power Handling
800 watts
Total Peak Power Handling
800 watts
Woofer Surround
H.E.D.G.E. Rubber
Woofer Composition
Polypropylene-Mica
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Magnet Type
Ferrite
Frequency Response
31 - 200 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Sealed
Number of Subwoofers
1
Box Style/Shape
Square/Rectangle
Height
13-1/2"
Width
6-5/8"
Depth
6-5/8"
Number of Terminals
1
Terminal Type
High and low-level input terminals
Box Exterior Color
Black
Box Finish
Carpet
Final Wired Impedance
2-ohm
Amplifier Wiring Kit
Is Amplifier Wiring Kit included?
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

PWV-SB12

Weight:

35.20lbs

Internal SKU:

pwvsb12

Internal Product ID:

227098

Customer Ratings & Reviews


Alpine PWV-SB12 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
4
Features
5
Design
5
Usability
5

Customer Photos & Videos


Customer Reviews

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Alpine PWV-SB12

This sub is a perfect fit for my 2026 Dodge Charger Scat Pack Plus. Since my vehicle already had Alpine components from the factory it was a no brainer for me. There wasn't hardly any information on this product online, but I will be the first to tell you that it is a winner. The bass hits and not distorted.

By Oscar on April 4, 2026




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