BRV-S40
4" BassRev™ Coaxial Speaker Set
Compact Size. Big-Speaker Feel.
The Alpine BRV-S40 BassRev™ Coaxial Speakers deliver surprisingly powerful sound from a compact 4-inch form factor. Designed with Alpine’s BassRev™ architecture and HEDGE™ (High Excursion Design Gathered Edge) surround technology, they produce deeper bass, fuller mids, and crisp highs—far beyond what you’d expect from a small coaxial design.
When paired with Alpine OPTIM8® DSP amplification and OPTIM™ Sync tuning, the BRV-S40 unlocks enhanced low-frequency output and a more dynamic, full-range listening experience.
Big Sound From a Small Footprint
The BRV-S40 is engineered to deliver “big speaker” performance in tight factory locations like dash and upper door positions.
A high-excursion 4" woofer moves more air than conventional designs, producing stronger midbass and improved low-end presence. This gives your music more body and impact without needing larger speaker cuts or added subwoofers.
BassRev™ Engineering
BassRev™ technology is designed to maximize output from compact speakers through controlled cone excursion and optimized motor design.
The HEDGE™ surround allows the woofer to travel farther while maintaining stability and accuracy. The result is tighter bass, reduced distortion at higher volumes, and a more engaging listening experience across all genres.
Optimized for Active Tuning
The BRV-S40 is built to perform best in active DSP-based systems.
When paired with Alpine OPTIM8®, OPTIM™ Sync applies intelligent tuning profiles tailored to BassRev speakers. This enhances bass response, smooths frequency balance, and ensures the system operates efficiently and safely at higher output levels.
Clear, Balanced Sound
A 4" woofer and integrated coaxial tweeter work together to deliver a full-range sound signature.
The woofer provides punchy midbass and vocal warmth, while the tweeter adds clarity, air, and detail. The result is a cohesive soundstage with clean separation and natural tonal balance—even in challenging factory speaker locations.
Built for Performance & Durability
Every component is engineered for long-term reliability and consistent sound quality.
- Polypropylene + mica woofer cone for rigidity and low distortion
- HEDGE™ surround for extended excursion and improved bass output
- Ferrite motor structure for stable power handling
- Integrated coaxial tweeter for smooth high-frequency response
- Durable gunmetal finish for a premium, factory-ready look
Specifications
Woofer Size: 4"
Tweeter Size: 1" Coaxial
Power Handling: 40W RMS / 120W Peak
Impedance: 4Ω
Sensitivity: 84 dB
Frequency Response (OPTIM™ Sync On): 67Hz – 20kHz
Frequency Response (Standard): 75Hz – 20kHz
Mounting Depth: 1-3/4"
Woofer Cone Material: Polypropylene + Mica
Surround Material: HEDGE™ Rubber Design
Experience More From Every Drive
The BRV-S40 is designed for listeners who want a noticeable upgrade in clarity, dynamics, and bass response without moving to larger speaker formats. Compact, powerful, and DSP-ready, it brings a more engaging sound to any factory audio system.
