Description
BassRev 4″ 2-Way Audio Component Speaker System from Alpine
Alpine has transformed audio systems with cutting-edge technology in its all-new BASSREV BRV-S40C Speakers.
Introducing Alpine BassRev BRV-S40C – Engineered for Powerful, Precise Sound Born from Alpine’s decades of acoustic engineering expertise, the all-new BassRev Series delivers an audio experience that blends powerful bass performance with outstanding clarity.
At the heart of BassRev lies Alpine’s innovative HEDGE technology, which delivers tight, controlled bass frequencies and, in doing so, maintains the brand’s signature precision and detail.
All-New Engineering for High-Impact Bass
The Alpine BassRev BRV-S40C redefine speaker design with a fresh approach to component development.
Its exclusively engineered polypropylene cone is both lightweight and exceptionally durable. Paired with the HEDGE surround and a dense magnet structure, BassRev speakers achieve increased sound pressure and greater diaphragm excursion. The result is deep, punchy bass, precise control, and impressive output at high SPL levels.
Crisp, Detailed Highs
Equipped with 1” soft-dome tweeters, BassRev delivers a smooth and highly detailed upper frequency range. A low-mass polyester diaphragm combined with Neodymium magnets ensures clean, accurate high-frequency response for a refined, balanced listening experience.
Versatile Fitment for More Vehicles
Available in a wide range of component and coaxial configurations, the BassRev Series offers exceptional versatility. Designed for direct factory speaker replacement, BassRev is compatible with a wide variety of vehicles, making it an ideal upgrade for drivers seeking immediate improvements in sound quality.


BassRev 2-Way 4″ Coaxial Speaker Set
BRV-S40 is the 2-Way Coaxial Speaker model of the all-new for 2025 BassRev Series speaker collection. Featuring a 4-inch woofer and a 1-inch integrated tweeter with up to 20kHz frequency response. Suitable for the replacement of many factory speakers.

HEDGE Surround
Alpine’s all-new HEDGE surround structure (High Excursion Design Gathered Edge) is engineered to dramatically increase sound pressure, allowing maximum bass performance in the 67Hz – 120Hz range. BRV-S40C can achieve a maximum linear excursion peak of 20mm and, as a result, delivers powerful, deep bass you’ll be sure to feel.

Polypropylene (PP) Woofer Cone
Lightweight, yet incredibly rigid, BRV-S40 employs a Polypropylene woofer cone that resists resonance and unwanted vibrations. Engineered for peak performance, the Alpine BRV-S40 maintains structural integrity even at high excursion levels, enabling smooth, clean, and balanced sound reproduction.

Large Driver Magnets
The large Strontium Ferrite magnets housed on the back of Alpine’s BRV-S40C BassRev speakers mean business. Combined with large 25mm voice coils and Alpine’s HEDGE Surround, delivering substantially increased cone excursion and driver force, providing louder, punchier sound.

Polyester & Neodymium Soft Dome Tweeters
BassRev’s Polyester low-mass tweeters reproduce subtle transients and micro-details with precision. Enjoy wide, smooth and immersive highs with prominent staging capabilities all in a compact 1″ size. BRV-S40C tweeters feature Neodymium magnets – one of the most powerful magnetic materials available. Neodymium facilitates exceptionally clean and articulate high-frequency reproduction with precision.

Seamless Tweeter Fitment in OEM Locations
You can simply remove the tweeter housing and trim ring included with the BassRev tweeter to minimise its overall size and diameter. The tweeter itself is then compact enough to fit in many OEM tweeter locations (inside A-pillars, mirror triangles or door sail panels) for a stealth install. Preserving OEM design cues with minimal to no modification required.

Revolutionary OPTIM™Sync Technology
BassRev components utilise Alpine’s all-new Proprietary bass Algorithm OPTIM™Sync, preloaded within the integrated DSP Amplifier for Subwoofers and accessible for BassRev speakers via the OPTIM™8 DSP Amplifier. OPTIM™Sync seamlessly delivers dynamic bass boost and pre-EQ, ensuring each BassRev component is tuned with perfect precision. In turn, this safely extends low-end performance, while simultaneously refining tonal smoothness for truly elevated sound.
The result is a larger-than-life sound that a standard speaker alone can’t match. Pushing harder where it counts while staying controlled.
Experience an audio transformation with the Alpine BRV-40C speaker set, meticulously engineered to elevate your listening experience during any journey.
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